According to its self-reported version, the Tenable.sc application installed on the remote host is version 5.16.0 or 5.17.0 and affected by the following OpenSSL denial of service vulnerability:

  - An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a     TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial     ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result,     leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation     enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1     versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not     impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j). (CVE-2021-3449)

Note that Nessus has not tested for this issue 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-2021-1024 advisory.

    - CVE-2021-3450 openssl: CA certificate check       bypass with X509_V_FLAG_X509_STRICT

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 version of Nessus Network Monitor (NNM) installed on the remote host is prior to 5.13.1. It is, therefore, affected by multiple vulnerabilities:

  - The X.509 GeneralName type is a generic type for representing different types of names. One of those     name types is known as EDIPartyName. OpenSSL provides a function GENERAL_NAME_cmp which compares different     instances of a GENERAL_NAME to see if they are equal or not. This function behaves incorrectly when both     GENERAL_NAMEs contain an EDIPARTYNAME. A NULL pointer dereference and a crash may occur leading to a     possible denial of service attack. OpenSSL itself uses the GENERAL_NAME_cmp function for two purposes:     1) Comparing CRL distribution point names between an available CRL and a CRL distribution point embedded     in an X509 certificate 2) When verifying that a timestamp response token signer matches the timestamp     authority name (exposed via the API functions TS_RESP_verify_response and TS_RESP_verify_token) If an     attacker can control both items being compared then that attacker could trigger a crash. For example if     the attacker can trick a client or server into checking a malicious certificate against a malicious CRL     then this may occur. Note that some applications automatically download CRLs based on a URL embedded in a     certificate. This checking happens prior to the signatures on the certificate and CRL being verified.     OpenSSL's s_server, s_client and verify tools have support for the -crl_download option which implements     automatic CRL downloading and this attack has been demonstrated to work against those tools. Note that     an unrelated bug means that affected versions of OpenSSL cannot parse or construct correct encodings of     EDIPARTYNAME. However it is possible to construct a malformed EDIPARTYNAME that OpenSSL's parser will     accept and hence trigger this attack. All OpenSSL 1.1.1 and 1.0.2 versions are affected by this issue.     Other OpenSSL releases are out of support and have not been checked. Fixed in OpenSSL 1.1.1i     (Affected 1.1.1-1.1.1h). Fixed in OpenSSL 1.0.2x (Affected 1.0.2-1.0.2w). (CVE-2020-1971)   
  - The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value     based on the issuer and serial number data contained within an X509 certificate. However it fails to     correctly handle any errors that may occur while parsing the issuer field (which might occur if the     issuer field is maliciously constructed). This may subsequently result in a NULL pointer deref and a     crash leading to a potential denial of service attack. The function X509_issuer_and_serial_hash() is     never directly called by OpenSSL itself so applications are only vulnerable if they use this function     directly and they use it on certificates that may have been obtained from untrusted sources. OpenSSL     versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL     1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of     support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade     to 1.0.2y. Other users should upgrade to 1.1.1j. (CVE-2021-23841)

  - Calls to EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate may overflow the output length     argument in some cases where the input length is close to the maximum permissable length for an integer     on the platform. In such cases the return value from the function call will be 1 (indicating success),     but the output length value will be negative. This could cause applications to behave incorrectly or     crash. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should     upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL     1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL     1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. (CVE-2021-23840)     Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported   version number.

This update for openssl-1_1 fixes the security issue :

CVE-2021-3449: An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension but includes a signature_algorithms_cert extension, then a NULL pointer dereference will result, leading to a crash and a denial of service attack. OpenSSL TLS clients are not impacted by this issue.
[bsc#1183852]

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.

A NULL pointer dereference was found in the signature_algorithms processing in OpenSSL, a Secure Sockets Layer toolkit, which could result in denial of service.

Additional details can be found in the upstream advisory:
https://www.openssl.org/news/secadv/20210325.txt

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:1024 advisory.

    OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS)     protocols, as well as a full-strength general-purpose cryptography library.

    Security Fix(es):

    * openssl: NULL pointer dereference in signature_algorithms processing (CVE-2021-3449)

    * openssl: CA certificate check bypass with X509_V_FLAG_X509_STRICT (CVE-2021-3450)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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 host is affected by the vulnerability described in GLSA-202103-03 (OpenSSL: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in OpenSSL. Please review       the CVE identifiers referenced below for details.
  Impact :

    Please review the referenced CVE identifiers for details.
  Workaround :

    There is no known workaround at this time.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:1063 advisory.

    OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS)     protocols, as well as a full-strength general-purpose cryptography library.

    Security Fix(es):

    * openssl: NULL pointer dereference in signature_algorithms processing (CVE-2021-3449)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

According to the version of the openssl1.1.1d packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - The OpenSSL toolkit provides support for secure     communications between machines. OpenSSL includes a     certificate management tool and shared libraries which     provide various cryptographic algorithms and     protocols.Security Fix(es):A flaw was found in openssl.
    A sA flaw was found in openssl. A server crash and     denial of service attack could occur if a client sends     a TLSv1.2 renegotiation ClientHello and omits the     signature_algorithms extension but includes a     signature_algorithms_cert extension. The highest threat     from this vulnerability is to system availability.
    crash and denial of service attack could occur if a     client sends a TLSv1.2 renegotiation ClientHello and     omits the signature_algorithms extension but includes a     signature_algorithms_cert extension. The highest threat     from this vulnerability is to system     availability.(CVE-2021-3449)

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 version of the openssl packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability :

  - An OpenSSL TLS server may crash if sent a maliciously     crafted renegotiation ClientHello message from a     client. If a TLSv1.2 renegotiation ClientHello omits     the signature_algorithms extension (where it was     present in the initial ClientHello), but includes a     signature_algorithms_cert extension then a NULL pointer     dereference will result, leading to a crash and a     denial of service attack. A server is only vulnerable     if it has TLSv1.2 and renegotiation enabled (which is     the default configuration). OpenSSL TLS clients are not     impacted by this issue. All OpenSSL 1.1.1 versions are     affected by this issue. Users of these versions should     upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not     impacted by this issue. Fixed in OpenSSL 1.1.1k     (Affected 1.1.1-1.1.1j).(CVE-2021-3449)

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 openssl software which exists in puppet enterprise prior to 2019.8.6 has multiple vulnerabilities.

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

The remote SUSE Linux SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2327-1 advisory.

  - The package y18n before 3.2.2, 4.0.1 and 5.0.5, is vulnerable to Prototype Pollution. (CVE-2020-7774)

  - Node.js before 16.4.1, 14.17.2, 12.22.2 is vulnerable to an out-of-bounds read when uv__idna_toascii() is     used to convert strings to ASCII. The pointer p is read and increased without checking whether it is     beyond pe, with the latter holding a pointer to the end of the buffer. This can lead to information     disclosures or crashes. This function can be triggered via uv_getaddrinfo(). (CVE-2021-22918)

  - The package hosted-git-info before 3.0.8 are vulnerable to Regular Expression Denial of Service (ReDoS)     via regular expression shortcutMatch in the fromUrl function in index.js. The affected regular expression     exhibits polynomial worst-case time complexity. (CVE-2021-23362)

  - ssri 5.2.2-8.0.0, fixed in 8.0.1, processes SRIs using a regular expression which is vulnerable to a     denial of service. Malicious SRIs could take an extremely long time to process, leading to denial of     service. This issue only affects consumers using the strict option. (CVE-2021-27290)

  - An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a     client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was     present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL     pointer dereference will result, leading to a crash and a denial of service attack. A server is only     vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS     clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of     these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in     OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j). (CVE-2021-3449)

  - The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a     certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow     certificates in the chain that have explicitly encoded elliptic curve parameters was added as an     additional strict check. An error in the implementation of this check meant that the result of a previous     check to confirm that certificates in the chain are valid CA certificates was overwritten. This     effectively bypasses the check that non-CA certificates must not be able to issue other certificates. If a     purpose has been configured then there is a subsequent opportunity for checks that the certificate is a     valid CA. All of the named purpose values implemented in libcrypto perform this check. Therefore, where     a purpose is set the certificate chain will still be rejected even when the strict flag has been used. A     purpose is set by default in libssl client and server certificate verification routines, but it can be     overridden or removed by an application. In order to be affected, an application must explicitly set the     X509_V_FLAG_X509_STRICT verification flag and either not set a purpose for the certificate verification     or, in the case of TLS client or server applications, override the default purpose. OpenSSL versions     1.1.1h and newer are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k.
    OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1h-1.1.1j).
    (CVE-2021-3450)

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 version of the openssl packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - An OpenSSL TLS server may crash if sent a maliciously     crafted renegotiation ClientHello message from a     client. If a TLSv1.2 renegotiation ClientHello omits     the signature_algorithms extension (where it was     present in the initial ClientHello), but includes a     signature_algorithms_cert extension then a NULL pointer     dereference will result, leading to a crash and a     denial of service attack. A server is only vulnerable     if it has TLSv1.2 and renegotiation enabled (which is     the default configuration). OpenSSL TLS clients are not     impacted by this issue.(CVE-2021-3449)

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 version of the openssl packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability :

  - An OpenSSL TLS server may crash if sent a maliciously     crafted renegotiation ClientHello message from a     client. If a TLSv1.2 renegotiation ClientHello omits     the signature_algorithms extension (where it was     present in the initial ClientHello), but includes a     signature_algorithms_cert extension then a NULL pointer     dereference will result, leading to a crash and a     denial of service attack. A server is only vulnerable     if it has TLSv1.2 and renegotiation enabled (which is     the default configuration). OpenSSL TLS clients are not     impacted by this issue. All OpenSSL 1.1.1 versions are     affected by this issue. Users of these versions should     upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not     impacted by this issue. Fixed in OpenSSL 1.1.1k     (Affected 1.1.1-1.1.1j).(CVE-2021-3449)

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 version of MySQL running on the remote host is 8.0.x prior to 8.0.24. It is, therefore, affected by multiple vulnerabilities, including the following, as noted in the April 2021 Critical Patch Update advisory:

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Packaging (OpenSSL)).
  Supported versions that are affected are 5.7.33 and prior and 8.0.23 and prior. Easily exploitable vulnerability   allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server. Successful   attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash   (complete DOS) of MySQL Server. (CVE-2021-3449)

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Encryption   (OpenSSL)). Supported versions that are affected are 5.7.33 and prior and 8.0.23 and prior. Easily exploitable   vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server.
  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently   repeatable crash (complete DOS) of MySQL Server. (CVE-2021-23841)

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Packaging). Supported versions   that are affected are 5.7.33 and prior and 8.0.23 and prior. Easily exploitable vulnerability allows   unauthenticated attacker with logon to the infrastructure where MySQL Server executes to compromise MySQL Server.
  Successful attacks require human interaction from a person other than the attacker. Successful attacks of this   vulnerability can result in unauthorized access to critical data or complete access to all MySQL Server   accessible data as well as unauthorized update, insert or delete access to some of MySQL Server accessible data. (CVE-2020-28196)

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

Oracle reports :

This Critical Patch Update contains 49 new security patches for Oracle MySQL. 10 of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a network without requiring user credentials. The highest CVSS v3.1 Base Score of vulnerabilities affecting Oracle MySQL is 9.8.

MariaDB is affected by CVE-2021-2166 and CVE-2021-2154 only

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k.
OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
148404	Tenable.sc 5.16.0 / 5.17.0 OpenSSL DoS (TNS-2021-06)	Nessus	Misc.	2021/4/9	2024/10/2	medium
148547	Oracle Linux 8 : openssl (ELSA-2021-1024)	Nessus	Oracle Linux Local Security Checks	2021/4/14	2024/11/1	high
149403	Nessus Network Monitor < 5.13.1 Multiple Vulnerabilities (TNS-2021-09)	Nessus	Misc.	2021/5/12	2024/1/2	high
148167	SUSE SLED15 / SLES15 Security Update : openssl-1_1 (SUSE-SU-2021:0955-1)	Nessus	SuSE Local Security Checks	2021/3/26	2024/1/8	medium
148170	Debian DSA-4875-1 : openssl - security update	Nessus	Debian Local Security Checks	2021/3/26	2024/1/12	medium
148249	RHEL 8 : openssl (RHSA-2021:1024)	Nessus	Red Hat Local Security Checks	2021/3/30	2024/11/7	high
148271	GLSA-202103-03 : OpenSSL: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	2021/4/1	2024/1/12	high
148317	RHEL 8 : openssl (RHSA-2021:1063)	Nessus	Red Hat Local Security Checks	2021/4/5	2024/11/7	medium
151772	EulerOS 2.0 SP5 : openssl1.1.1d (EulerOS-SA-2021-2225)	Nessus	Huawei Local Security Checks	2021/7/16	2023/12/7	medium
150252	EulerOS Virtualization 2.9.0 : openssl (EulerOS-SA-2021-1970)	Nessus	Huawei Local Security Checks	2021/6/4	2023/12/27	medium
184153	Puppet Enterprise < 2019.8.6 / 2021.1.0 Multiple OpenSSL Vulnerabilities	Nessus	Misc.	2023/11/1	2023/11/2	high
151655	SUSE SLES15 Security Update : nodejs12 (SUSE-SU-2021:2327-1)	Nessus	SuSE Local Security Checks	2021/7/15	2023/11/1	critical
151033	EulerOS 2.0 SP8 : openssl (EulerOS-SA-2021-1985)	Nessus	Huawei Local Security Checks	2021/6/28	2023/12/12	medium
151159	EulerOS Virtualization for ARM 64 3.0.6.0 : openssl (EulerOS-SA-2021-2020)	Nessus	Huawei Local Security Checks	2021/6/30	2023/12/12	medium
148937	MySQL 8.0.x < 8.0.24 Multiple Vulnerabilities (Apr 2021 CPU)	Nessus	Databases	2021/4/22	2025/4/18	medium
148869	FreeBSD : MySQL -- Multiple vulnerabilities (56ba4513-a1be-11eb-9072-d4c9ef517024)	Nessus	FreeBSD Local Security Checks	2021/4/21	2024/11/29	medium
500504	Siemens OpenSSL in Industrial Products (CVE-2021-3449)	Tenable OT Security	Tenable.ot	2022/2/7	2025/3/10	medium

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