This update for openssh fixes the following issues :

Security issue fixed :

CVE-2018-20685: Fixed an issue where scp client allows remote SSH servers to bypass intended access restrictions (bsc#1121571)

CVE-2019-6109: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate terminal output via the object name, e.g. by inserting ANSI escape sequences (bsc#1121816)

CVE-2019-6110: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate stderr output, e.g. by inserting ANSI escape sequences (bsc#1121818)

CVE-2019-6111: Fixed an issue where the scp client would allow malicious remote SSH servers to execute directory traversal attacks and overwrite files (bsc#1121821)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for openssh fixes the following issues :

Security issue fixed :

  - CVE-2018-20685: Fixed an issue where scp client allows     remote SSH servers to bypass intended access     restrictions (bsc#1121571)

  - CVE-2019-6109: Fixed an issue where the scp client would     allow malicious remote SSH servers to manipulate     terminal output via the object name, e.g. by inserting     ANSI escape sequences (bsc#1121816)

  - CVE-2019-6110: Fixed an issue where the scp client would     allow malicious remote SSH servers to manipulate stderr     output, e.g. by inserting ANSI escape sequences     (bsc#1121818)

  - CVE-2019-6111: Fixed an issue where the scp client would     allow malicious remote SSH servers to execute directory     traversal attacks and overwrite files (bsc#1121821)

This update was imported from the SUSE:SLE-12-SP2:Update update project.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a     malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client     output, e.g., by using ANSI control codes to hide additional files being transferred. This affects     refresh_progress_meter() in progressmeter.c. (CVE-2019-6109)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of Tencent Linux installed on the remote TencentOS Server 2 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2025:0541 advisory.

    Package updates are available for TencentOS Server 2 that fix the following vulnerabilities:

    CVE-2023-48795:
    An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a     malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client     output, e.g., by using ANSI control codes to hide additional files being transferred. This affects     refresh_progress_meter() in progressmeter.c.

    CVE-2023-51385:
    An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the     server chooses which files/directories are sent to the client. However, the scp client only performs     cursory validation of the object name returned (only directory traversal attacks are prevented). A     malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp client     target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as     well (for example, to overwrite the .ssh/authorized_keys file).

    CVE-2019-6109:
    In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious     server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control     codes to hide additional files being transferred.

    CVE-2020-14145:
    In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions     via the filename of . or an empty filename. The impact is modifying the permissions of the target     directory on the client side.

    CVE-2019-6110:
    In ssh in OpenSSH before 9.6, OS command injection might occur if a user name or host name has shell     metacharacters, and this name is referenced by an expansion token in certain situations. For example, an     untrusted Git repository can have a submodule with shell metacharacters in a user name or host name.

    CVE-2019-6111:
    The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other     products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the     extension negotiation message), and a client and server may consequently end up with a connection for     which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because     the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and     mishandles use of sequence numbers. For example, there is an effective attack against SSH's use of     ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in chacha20-poly1305@openssh.com and     (if CBC is used) the -etm@openssh.com MAC algorithms. This also affects Maverick Synergy Java SSH API     before 3.1.0-SNAPSHOT, Dropbear through 2022.83, Ssh before 5.1.1 in Erlang/OTP, PuTTY before 0.80,     AsyncSSH before 2.14.2, golang.org/x/crypto before 0.17.0, libssh before 0.10.6, libssh2 through 1.11.0,     Thorn Tech SFTP Gateway before 3.4.6, Tera Term before 5.1, Paramiko before 3.4.0, jsch before 0.2.15,     SFTPGo before 2.5.6, Netgate pfSense Plus through 23.09.1, Netgate pfSense CE through 2.7.2, HPN-SSH     through 18.2.0, ProFTPD before 1.3.8b (and before 1.3.9rc2), ORYX CycloneSSH before 2.3.4, NetSarang     XShell 7 before Build 0144, CrushFTP before 10.6.0, ConnectBot SSH library before 2.2.22, Apache MINA sshd     through 2.11.0, sshj through 0.37.0, TinySSH through 20230101, trilead-ssh2 6401, LANCOM LCOS and     LANconfig, FileZilla before 3.66.4, Nova before 11.8, PKIX-SSH before 14.4, SecureCRT before 9.4.3,     Transmit5 before 5.10.4, Win32-OpenSSH before 9.5.0.0p1-Beta, WinSCP before 6.2.2, Bitvise SSH Server     before 9.32, Bitvise SSH Client before 9.33, KiTTY through 0.76.1.13, the net-ssh gem 7.2.0 for Ruby, the     mscdex ssh2 module before 1.15.0 for Node.js, the thrussh library before 0.35.1 for Rust, and the Russh     crate before 0.40.2 for Rust.

    CVE-2020-15778:
    ** DISPUTED ** scp in OpenSSH through 8.3p1 allows command injection in the scp.c toremote function, as     demonstrated by backtick characters in the destination argument. NOTE: the vendor reportedly has stated     that they intentionally omit validation of anomalous argument transfers because that could stand a     great chance of breaking existing workflows.

    CVE-2018-20685:
    The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in     the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts     (where no host key for the server has been cached by the client). NOTE: some reports state that 8.5 and     8.6 are also affected.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-3702 advisory.

    [8.0p1-3 + 0.10.3-7]
    - Fix typos in manual pages (#1668325)
    - Use the upstream support for PKCS#8 PEM files alongside with the legacy PEM files (#1712436)
    - Unbreak ssh-keygen -A in FIPS mode (#1732424)
    - Add missing RSA certificate types to offered hostkey types in FIPS mode (#1732449)

    [8.0p1-2 + 0.10.3-7]
    - Allow specifying a pin-value in PKCS #11 URI in ssh-add (#1639698)
    - Whitelist another syscall variant for s390x cryptographic module (ibmca engine) (#1714915)

    [8.0p1-1 + 0.10.3-7]
    - New upstream release (#1691045)
    - Remove support for unused VendorPatchLevel configuration option
    - Fix kerberos cleanup procedures (#1683295)
    - Do not negotiate arbitrary primes with DH GEX in FIPS (#1685096)
    - Several GSSAPI key exchange improvements and sync with Debian
    - Allow to use labels in PKCS#11 URIs even if they do not match on private key (#1671262)
    - Do not fall back to sshd_net_t SELinux context (#1678695)
    - Use FIPS compliant high-level signature OpenSSL API and KDF
    - Mention crypto-policies in manual pages
    - Do not fail if non-FIPS approved algorithm is enabled in FIPS
    - Generate the PEM files in new PKCS#8 format without the need of MD5 (#1712436)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-10789:04 advisory.

    * CVE-2018-20685: fix a vulnerability scp client where a malicious server     could bypass intended access restrictions and modify target directory     permissions via crafted filenames
    * CVE-2019-6109: fix scp client where a malicious server could manipulate   the     client's progress display output due to missing character encoding
    * CVE-2019-6111: fix scp client vulnerability that allowed a malicious   server     to overwrite arbitrary files in the client's target directory,   including     subdirectories, when performing transfers     CVE(s):
    CVE-2019-6109     An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a     malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client     output, e.g., by using ANSI control codes to hide additional files being transferred. This affects     refresh_progress_meter() in progressmeter.c.
    CVE-2018-20685     In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions     via the filename of . or an empty filename. The impact is modifying the permissions of the target     directory on the client side.
    CVE-2019-6111     An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the     server chooses which files/directories are sent to the client. However, the scp client only performs     cursory validation of the object name returned (only directory traversal attacks are prevented). A     malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp client     target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as     well (for example, to overwrite the .ssh/authorized_keys file).

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - An issue was discovered in OpenSSH 7.9. Due to missing     character encoding in the progress display, a malicious     server (or Man-in-The-Middle attacker) can employ     crafted object names to manipulate the client output,     e.g., by using ANSI control codes to hide additional     files being transferred. This affects     refresh_progress_meter() in     progressmeter.c.(CVE-2019-6109)

  - An issue was discovered in OpenSSH 7.9. Due to the scp     implementation being derived from 1983 rcp, the server     chooses which files/directories are sent to the client.
    However, the scp client only performs cursory     validation of the object name returned (only directory     traversal attacks are prevented). A malicious scp     server (or Man-in-The-Middle attacker) can overwrite     arbitrary files in the scp client target directory. If     recursive operation (-r) is performed, the server can     manipulate subdirectories as well (for example, to     overwrite the .ssh/authorized_keys     file).(CVE-2019-6111)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the openssh packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - An issue was discovered in OpenSSH 7.9. Due to missing     character encoding in the progress display, a malicious     server (or Man-in-The-Middle attacker) can employ     crafted object names to manipulate the client output,     e.g., by using ANSI control codes to hide additional     files being transferred. This affects     refresh_progress_meter() in     progressmeter.c.(CVE-2019-6109)

  - An issue was discovered in OpenSSH 7.9. Due to the scp     implementation being derived from 1983 rcp, the server     chooses which files/directories are sent to the client.
    However, the scp client only performs cursory     validation of the object name returned (only directory     traversal attacks are prevented). A malicious scp     server (or Man-in-The-Middle attacker) can overwrite     arbitrary files in the scp client target directory. If     recursive operation (-r) is performed, the server can     manipulate subdirectories as well (for example, to     overwrite the .ssh/authorized_keys     file).(CVE-2019-6111)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update of the openssh package has been released.

According to its banner, the version of OpenSSH running on the remote host is prior to 8.0. It is, therefore, affected by the following vulnerabilities:

  - A permission bypass vulnerability due to improper directory name validation. An unauthenticated, remote     attacker can exploit this, with a specially crafted scp server, to change the permission of a directory     on the client. (CVE-2018-20685)

  - Multiple arbitrary file downloads due to improper validation of object name and stderr output. An unauthenticated     remote attacker can exploit this, with a specially crafted scp server, to include additional hidden     files in the transfer. (CVE-2019-6109, CVE-2019-6110)

  - An arbitrary file write vulnerability due to improper object name validation. An unauthenticated, remote     attacker can exploit this, with a specially crafted scp server, to overwrite arbitrary files in the     client directory. (CVE-2019-6111)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Remotely observable behaviour in auth-gss2.c in OpenSSH     through 7.8 could be used by remote attackers to detect     existence of users on a target system when GSS2 is in     use. NOTE: the discoverer states 'We understand that     the OpenSSH developers do not want to treat such a     username enumeration (or 'oracle') as a     vulnerability.'(CVE-2018-15919)

  - An issue was discovered in OpenSSH 7.9. Due to missing     character encoding in the progress display, a malicious     server (or Man-in-The-Middle attacker) can employ     crafted object names to manipulate the client output,     e.g., by using ANSI control codes to hide additional     files being transferred. This affects     refresh_progress_meter() in     progressmeter.c.(CVE-2019-6109)

  - An issue was discovered in OpenSSH 7.9. Due to the scp     implementation being derived from 1983 rcp, the server     chooses which files/directories are sent to the client.
    However, the scp client only performs cursory     validation of the object name returned (only directory     traversal attacks are prevented). A malicious scp     server (or Man-in-The-Middle attacker) can overwrite     arbitrary files in the scp client target directory. If     recursive operation (-r) is performed, the server can     manipulate subdirectories as well (for example, to     overwrite the .ssh/authorized_keys     file).(CVE-2019-6111)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2022:0188 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2018-20685:
    In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions     via the filename of . or an empty filename. The impact is modifying the permissions of the target     directory on the client side.

    CVE-2019-6109:
    An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a     malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client     output, e.g., by using ANSI control codes to hide additional files being transferred. This affects     refresh_progress_meter() in progressmeter.c.

    CVE-2019-6111:
    An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the     server chooses which files/directories are sent to the client. However, the scp client only performs     cursory validation of the object name returned (only directory traversal attacks are prevented). A     malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp client     target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as     well (for example, to overwrite the .ssh/authorized_keys file).

    CVE-2020-14145:
    The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in     the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts     (where no host key for the server has been cached by the client). NOTE: some reports state that 8.5 and     8.6 are also affected.

    CVE-2021-41617:
    sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows     privilege escalation because supplemental groups are not initialized as expected. Helper programs for     AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group     memberships of the sshd process, if the configuration specifies running the command as a different user.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

This update for openssh fixes the following issues :

Security issues fixed :

CVE-2018-20685: Fixed an issue where scp client allows remote SSH servers to bypass intended access restrictions (bsc#1121571)

CVE-2019-6109: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate terminal output via the object name, e.g. by inserting ANSI escape sequences (bsc#1121816)

CVE-2019-6110: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate stderr output, e.g. by inserting ANSI escape sequences (bsc#1121818)

CVE-2019-6111: Fixed an issue where the scp client would allow malicious remote SSH servers to execute directory traversal attacks and overwrite files (bsc#1121821)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Harry Sintonen from F-Secure Corporation discovered multiple vulnerabilities in OpenSSH, an implementation of the SSH protocol suite. All the vulnerabilities are in found in the scp client implementing the SCP protocol.

  - CVE-2018-20685     Due to improper directory name validation, the scp     client allows servers to modify permissions of the     target directory by using empty or dot directory name.

  - CVE-2019-6109     Due to missing character encoding in the progress     display, the object name can be used to manipulate the     client output, for example to employ ANSI codes to hide     additional files being transferred.

  - CVE-2019-6111     Due to scp client insufficient input validation in path     names sent by server, a malicious server can do     arbitrary file overwrites in target directory. If the     recursive (-r) option is provided, the server can also     manipulate subdirectories as well.

  The check added in this version can lead to regression if the client   and the server have differences in wildcard expansion rules. If the   server is trusted for that purpose, the check can be disabled with a   new -T option to the scp client.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
121300	SUSE SLED12 / SLES12 Security Update : openssh (SUSE-SU-2019:0132-1)	Nessus	SuSE Local Security Checks	2019/1/22	2022/5/24	medium
121460	openSUSE Security Update : openssh (openSUSE-2019-93)	Nessus	SuSE Local Security Checks	2019/1/30	2024/6/25	medium
222944	Linux Distros Unpatched Vulnerability : CVE-2019-6109	Nessus	Misc.	2025/3/4	2026/7/19	medium
121306	SUSE SLES11 Security Update : openssh (SUSE-SU-2019:13931-1)	Nessus	SuSE Local Security Checks	2019/1/22	2022/5/24	medium
247820	TencentOS Server 2: openssh (TSSA-2025:0541)	Nessus	Tencent Local Security Checks	2025/8/11	2025/12/4	medium
180726	Oracle Linux 8 : openssh (ELSA-2019-3702)	Nessus	Oracle Linux Local Security Checks	2023/9/7	2024/10/22	medium
283017	MiracleLinux 7 : openssh-7.4p1-23.0.3.0.3.el7.AXS7 (AXSA:2025-10789:04)	Nessus	Miracle Linux Local Security Checks	2026/1/13	2026/1/13	medium
124610	EulerOS 2.0 SP5 : openssh (EulerOS-SA-2019-1324)	Nessus	Huawei Local Security Checks	2019/5/6	2022/5/20	medium
125582	EulerOS Virtualization for ARM 64 3.0.2.0 : openssh (EulerOS-SA-2019-1630)	Nessus	Huawei Local Security Checks	2019/5/30	2022/5/20	medium
128831	EulerOS 2.0 SP5 : openssh (EulerOS-SA-2019-1908)	Nessus	Huawei Local Security Checks	2019/9/16	2022/5/19	medium
203114	Photon OS 2.0: Openssh PHSA-2019-2.0-0159	Nessus	PhotonOS Local Security Checks	2024/7/23	2024/7/23	medium
203046	Photon OS 3.0: Openssh PHSA-2019-3.0-0014	Nessus	PhotonOS Local Security Checks	2024/7/23	2024/7/24	medium
159491	OpenSSH < 8.0	Nessus	Misc.	2022/4/4	2024/3/27	medium
137499	EulerOS 2.0 SP2 : openssh (EulerOS-SA-2020-1657)	Nessus	Huawei Local Security Checks	2020/6/17	2022/5/13	medium
236225	Alibaba Cloud Linux 3 : 0188: openssh (ALINUX3-SA-2022:0188)	Nessus	Alibaba Cloud Linux Local Security Checks	2025/5/14	2025/5/14	high
121296	SUSE SLED15 / SLES15 Security Update : openssh (SUSE-SU-2019:0126-1)	Nessus	SuSE Local Security Checks	2019/1/22	2022/5/24	medium
122068	Debian DSA-4387-1 : openssh - security update	Nessus	Debian Local Security Checks	2019/2/11	2024/6/21	medium

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