This update for gnutls fixes the following security issues :

  - Improved mitigations against Lucky 13 class of attacks

  - CVE-2018-10846: 'Just in Time' PRIME + PROBE cache-based     side channel attack can lead to plaintext recovery     (bsc#1105460)

  - CVE-2018-10845: HMAC-SHA-384 vulnerable to Lucky     thirteen attack due to use of wrong constant     (bsc#1105459)

  - CVE-2018-10844: HMAC-SHA-256 vulnerable to Lucky     thirteen attack due to not enough dummy function calls     (bsc#1105437)

  - CVE-2017-10790: The _asn1_check_identifier function in     Libtasn1 caused a NULL pointer dereference and crash     (bsc#1047002)

This update was imported from the SUSE:SLE-15:Update update project.

This update for gnutls fixes the following issues :

This update for gnutls fixes the following issues :

Security issues fixed :

Improved mitigations against Lucky 13 class of attacks

'Just in Time' PRIME + PROBE cache-based side channel attack can lead to plaintext recovery (CVE-2018-10846, bsc#1105460)

HMAC-SHA-384 vulnerable to Lucky thirteen attack due to use of wrong constant (CVE-2018-10845, bsc#1105459)

HMAC-SHA-256 vulnerable to Lucky thirteen attack due to not enough dummy function calls (CVE-2018-10844, bsc#1105437)

The _asn1_check_identifier function in Libtasn1 caused a NULL pointer dereference and crash (CVE-2017-10790, bsc#1047002)

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.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:3050 advisory.

    The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library, which implements     cryptographic algorithms and protocols such as SSL, TLS, and DTLS.

    The following packages have been upgraded to a later upstream version: gnutls (3.3.29). (BZ#1561481)

    Security Fix(es):

    * gnutls: HMAC-SHA-256 vulnerable to Lucky thirteen attack due to not enough dummy function calls     (CVE-2018-10844)

    * gnutls: HMAC-SHA-384 vulnerable to Lucky thirteen attack due to use of wrong constant (CVE-2018-10845)

    * gnutls: Just in Time PRIME + PROBE cache-based side channel attack can lead to plaintext recovery     (CVE-2018-10846)

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

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.6 Release Notes     linked from 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.

Security Fix(es) :

  - gnutls: HMAC-SHA-256 vulnerable to Lucky thirteen attack     due to not enough dummy function calls (CVE-2018-10844)

  - gnutls: HMAC-SHA-384 vulnerable to Lucky thirteen attack     due to use of wrong constant (CVE-2018-10845)

  - gnutls: 'Just in Time' PRIME + PROBE cache-based side     channel attack can lead to plaintext recovery     (CVE-2018-10846)

It was found that GnuTLS's implementation of HMAC-SHA-256 was vulnerable to Lucky Thirteen-style attack. A remote attacker could use this flaw to conduct distinguishing attacks and plain text recovery attacks via statistical analysis of timing data using crafted packets.(CVE-2018-10844)

It was found that GnuTLS's implementation of HMAC-SHA-384 was vulnerable to a Lucky Thirteen-style attack. A remote attacker could use this flaw to conduct distinguishing attacks and plain text recovery attacks via statistical analysis of timing data using crafted packets.(CVE-2018-10845)

A cache-based side channel attack was found in the way GnuTLS implements CBC-mode cipher suites. An attacker could use a combination of 'Just in Time' Prime+probe and Lucky-13 attacks to recover plain text in a cross-VM attack scenario.(CVE-2018-10846)

This update for gnutls fixes the following security issues :

Improved mitigations against Lucky 13 class of attacks

CVE-2018-10846: 'Just in Time' PRIME + PROBE cache-based side channel attack can lead to plaintext recovery (bsc#1105460)

CVE-2018-10845: HMAC-SHA-384 vulnerable to Lucky thirteen attack due to use of wrong constant (bsc#1105459)

CVE-2018-10844: HMAC-SHA-256 vulnerable to Lucky thirteen attack due to not enough dummy function calls (bsc#1105437)

CVE-2017-10790: The _asn1_check_identifier function in Libtasn1 caused a NULL pointer dereference and crash (bsc#1047002)

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 set of vulnerabilities was discovered in GnuTLS which allowed attackers to do plain text recovery on TLS connections with certain cipher types.

CVE-2018-10844

It was found that the GnuTLS implementation of HMAC-SHA-256 was vulnerable to a Lucky thirteen style attack. Remote attackers could use this flaw to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data using crafted packets.

CVE-2018-10845

It was found that the GnuTLS implementation of HMAC-SHA-384 was vulnerable to a Lucky thirteen style attack. Remote attackers could use this flaw to conduct distinguishing attacks and plain text recovery attacks via statistical analysis of timing data using crafted packets.

CVE-2018-10846

A cache-based side channel in GnuTLS implementation that leads to plain text recovery in cross-VM attack setting was found. An attacker could use a combination of 'Just in Time' Prime+probe attack in combination with Lucky-13 attack to recover plain text using crafted packets.

For Debian 8 'Jessie', these problems have been fixed in version 3.3.30-0+deb8u1. It was found to be more practical to update to the latest upstream version of the 3.3.x branch since upstream's fixes were rather invasive and required cipher list changes anyways. This will facilitate future LTS updates as well.

This change therefore also includes the following major policy changes, as documented in the NEWS file :

  - ARCFOUR (RC4) and SSL 3.0 are no longer included in the     default priorities list. Those have to be explicitly     enabled, e.g., with a string like 'NORMAL:+ARCFOUR-128'     or 'NORMAL:+VERS-SSL3.0', respectively.

  - The ciphers utilizing HMAC-SHA384 and SHA256 have been     removed from the default priority strings. They are not     necessary for compatibility or other purpose and provide     no advantage over their SHA1 counter-parts, as they all     depend on the legacy TLS CBC block mode.

  - Follow closely RFC5280 recommendations and use UTCTime     for dates prior to 2050.

  - Require strict DER encoding for certificates, OCSP     requests, private keys, CRLs and certificate requests,     in order to reduce issues due to the complexity of BER     rules.

  - Refuse to import v1 or v2 certificates that contain     extensions.

API and ABI compatibility is retained, however, although new symbols have been added. Many bugfixes are also included in the upload. See the provided upstream changelog for more details.

We recommend that you upgrade your gnutls28 packages and do not expect significant breakage.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA 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 gnutls packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - gnutls: HMAC-SHA-256 vulnerable to Lucky thirteen     attack due to not enough dummy function calls     (CVE-2018-10844)

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

  - It was found that GnuTLS's implementation of     HMAC-SHA-256 was vulnerable to Lucky Thirteen-style     attack. A remote attacker could use this flaw to     conduct distinguishing attacks and plain text recovery     attacks via statistical analysis of timing data using     crafted packets.i1/4^CVE-2018-10844i1/4%0

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.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
117897	openSUSE Security Update : gnutls (openSUSE-2018-1092)	Nessus	SuSE Local Security Checks	2018/10/3	2024/8/1	medium
118292	SUSE SLES12 Security Update : gnutls (SUSE-SU-2018:2825-2)	Nessus	SuSE Local Security Checks	2018/10/22	2024/7/30	medium
118516	RHEL 7 : gnutls (RHSA-2018:3050)	Nessus	Red Hat Local Security Checks	2018/10/31	2025/4/15	medium
119184	Scientific Linux Security Update : gnutls on SL7.x x86_64 (20181030)	Nessus	Scientific Linux Local Security Checks	2018/11/27	2024/7/18	medium
119503	Amazon Linux 2 : gnutls (ALAS-2018-1120)	Nessus	Amazon Linux Local Security Checks	2018/12/10	2024/7/16	medium
120112	SUSE SLED15 / SLES15 Security Update : gnutls (SUSE-SU-2018:2930-1)	Nessus	SuSE Local Security Checks	2019/1/2	2024/7/10	medium
123319	openSUSE Security Update : gnutls (openSUSE-2019-746)	Nessus	SuSE Local Security Checks	2019/3/27	2024/6/10	medium
117696	SUSE SLES12 Security Update : gnutls (SUSE-SU-2018:2825-1)	Nessus	SuSE Local Security Checks	2018/9/25	2024/8/5	medium
118504	Debian DLA-1560-1 : gnutls28 security update	Nessus	Debian Local Security Checks	2018/10/31	2024/7/26	medium
120993	EulerOS 2.0 SP5 : gnutls (EulerOS-SA-2019-1005)	Nessus	Huawei Local Security Checks	2019/1/8	2024/6/27	medium
123889	EulerOS Virtualization 2.5.4 : gnutls (EulerOS-SA-2019-1203)	Nessus	Huawei Local Security Checks	2019/4/9	2024/6/4	medium

检测

插件搜索

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium