Test ID:	1.3.6.1.4.1.25623.1.1.13.2021.145.01
Category:	Slackware Local Security Checks
Title:	Slackware: Security Advisory (SSA:2021-145-01)
Summary:	The remote host is missing an update for the 'gnutls' package(s) announced via the SSA:2021-145-01 advisory.
Description:	Summary: The remote host is missing an update for the 'gnutls' package(s) announced via the SSA:2021-145-01 advisory. Vulnerability Insight: New gnutls packages are available for Slackware 14.2 and -current to fix security issues. Here are the details from the Slackware 14.2 ChangeLog: +--------------------------+ patches/packages/gnutls-3.6.16-i586-1_slack14.2.txz: Upgraded. Fixed potential miscalculation of ECDSA/EdDSA code backported from Nettle. In GnuTLS, as long as it is built and linked against the fixed version of Nettle, this only affects GOST curves. [CVE-2021-20305] Fixed potential use-after-free in sending 'key_share' and 'pre_shared_key' extensions. When sending those extensions, the client may dereference a pointer no longer valid after realloc. This happens only when the client sends a large Client Hello message, e.g., when HRR is sent in a resumed session previously negotiated large FFDHE parameters, because the initial allocation of the buffer is large enough without having to call realloc (#1151). [GNUTLS-SA-2021-03-10, CVSS: low] For more information, see: [link moved to references] (* Security fix *) +--------------------------+ Affected Software/OS: 'gnutls' package(s) on Slackware 14.2, Slackware current. Solution: Please install the updated package(s). CVSS Score: 6.8 CVSS Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-20305 Debian Security Information: DSA-4933 (Google Search) https://www.debian.org/security/2021/dsa-4933 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MQKWVVMAIDAJ7YAA3VVO32BHLDOH2E63/ https://security.gentoo.org/glsa/202105-31 https://bugzilla.redhat.com/show_bug.cgi?id=1942533 https://lists.debian.org/debian-lts-announce/2021/09/msg00008.html
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