Test ID:	1.3.6.1.4.1.25623.1.0.892627
Category:	Debian Local Security Checks
Title:	Debian: Security Advisory (DLA-2627-1)
Summary:	The remote host is missing an update for the Debian 'xorg-server' package(s) announced via the DLA-2627-1 advisory.
Description:	Summary: The remote host is missing an update for the Debian 'xorg-server' package(s) announced via the DLA-2627-1 advisory. Vulnerability Insight: Jan-Niklas Sohn discovered that there was an input validation failure in the X.Org display server. Insufficient checks on the lengths of the XInput extension's ChangeFeedbackControl request could have lead to out of bounds memory accesses in the X server. These issues can lead to privilege escalation for authorised clients, particularly on systems where the X server is running as a privileged user. CVE-2021-3472 Fix XChangeFeedbackControl() request underflow For Debian 9 Stretch, these problems have been fixed in version 2:1.19.2-1+deb9u8. We recommend that you upgrade your xorg-server packages. Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references] Affected Software/OS: 'xorg-server' package(s) on Debian 9. Solution: Please install the updated package(s). CVSS Score: 7.2 CVSS Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-3472 Debian Security Information: DSA-4893 (Google Search) https://www.debian.org/security/2021/dsa-4893 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PEXPCLMVU25AUZTUXC4MYBGPKOAIM5TW/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MDF7TAJE7NPZPNVOXSD5HBIFLNPUOD2V/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MO6S5OPXUDYBSRSVWVLFLJ6AFERG4HNY/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N63KL3T22HNFT4FJ7VMVF6U5Q4RFJIQF/ https://security.gentoo.org/glsa/202104-02 https://gitlab.freedesktop.org/xorg/xserver/-/commit/7aaf54a1884f71dc363f0b884e57bcb67407a6cd https://seclists.org/oss-sec/2021/q2/20 https://www.tenable.com/plugins/nessus/148701 https://www.zerodayinitiative.com/advisories/ZDI-21-463/ https://bugzilla.redhat.com/show_bug.cgi?id=1944167 https://lists.x.org/archives/xorg-announce/2021-April/003080.html https://lists.debian.org/debian-lts-announce/2021/04/msg00013.html http://www.openwall.com/lists/oss-security/2021/04/13/1
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