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Test ID:1.3.6.1.4.1.25623.1.0.704697
Category:Debian Local Security Checks
Title:Debian: Security Advisory (DSA-4697-1)
Summary:The remote host is missing an update for the Debian 'gnutls28' package(s) announced via the DSA-4697-1 advisory.
Description:Summary:
The remote host is missing an update for the Debian 'gnutls28' package(s) announced via the DSA-4697-1 advisory.

Vulnerability Insight:
A flaw was reported in the TLS session ticket key construction in GnuTLS, a library implementing the TLS and SSL protocols. The flaw caused the TLS server to not securely construct a session ticket encryption key considering the application supplied secret, allowing a man-in-the-middle attacker to bypass authentication in TLS 1.3 and recover previous conversations in TLS 1.2.

For the stable distribution (buster), this problem has been fixed in version 3.6.7-4+deb10u4.

We recommend that you upgrade your gnutls28 packages.

For the detailed security status of gnutls28 please refer to its security tracker page at: [link moved to references]

Affected Software/OS:
'gnutls28' package(s) on Debian 10.

Solution:
Please install the updated package(s).

CVSS Score:
5.8

CVSS Vector:
AV:N/AC:M/Au:N/C:P/I:P/A:N

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2020-13777
Debian Security Information: DSA-4697 (Google Search)
https://www.debian.org/security/2020/dsa-4697
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VMB3UGI5H5RCFRU6OGRPMNUCNLJGEN7Y/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6RTXZOXC4MHTFE2HKY6IAZMF2WHD2WMV/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6C4DHUKV6M6SJ5CV6KVHZNHNF7HCUE5P/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RRQBFK3UZ7SV76IYDTS4PS6ABS2DSJHK/
https://security.gentoo.org/glsa/202006-01
SuSE Security Announcement: openSUSE-SU-2020:0790 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00015.html
https://usn.ubuntu.com/4384-1/
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