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Test ID:1.3.6.1.4.1.25623.1.1.12.2020.4488.2
Category:Ubuntu Local Security Checks
Title:Ubuntu: Security Advisory (USN-4488-2)
Summary:The remote host is missing an update for the 'xorg-server' package(s) announced via the USN-4488-2 advisory.
Description:Summary:
The remote host is missing an update for the 'xorg-server' package(s) announced via the USN-4488-2 advisory.

Vulnerability Insight:
USN-4488-1 fixed several vulnerabilities in X.Org. This update provides
the corresponding update and also the update from USN-4490-1 for Ubuntu 14.04 ESM.

Original advisory details:

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled the
input extension protocol. A local attacker could possibly use this issue to
escalate privileges. (CVE-2020-14346)

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly initialized
memory. A local attacker could possibly use this issue to obtain sensitive
information. (CVE-2020-14347)

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled the
XkbSelectEvents function. A local attacker could possibly use this issue to
escalate privileges. (CVE-2020-14361)

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled the
XRecordRegisterClients function. A local attacker could possibly use this
issue to escalate privileges. (CVE-2020-14362)

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled the
XkbSetNames function. A local attacker could possibly use this issue to
escalate privileges. (CVE-2020-14345)

Affected Software/OS:
'xorg-server' package(s) on Ubuntu 14.04.

Solution:
Please install the updated package(s).

CVSS Score:
4.6

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

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2020-14345
https://security.gentoo.org/glsa/202012-01
https://www.zerodayinitiative.com/advisories/ZDI-20-1416/
https://bugzilla.redhat.com/show_bug.cgi?id=1862241
https://lists.x.org/archives/xorg-announce/2020-August/003058.html
http://www.openwall.com/lists/oss-security/2021/01/15/1
https://usn.ubuntu.com/4488-2/
https://usn.ubuntu.com/4490-1/
Common Vulnerability Exposure (CVE) ID: CVE-2020-14346
https://bugzilla.redhat.com/show_bug.cgi?id=1862246
https://www.zerodayinitiative.com/advisories/ZDI-20-1417/
Common Vulnerability Exposure (CVE) ID: CVE-2020-14347
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14347
Debian Security Information: DSA-4758 (Google Search)
https://www.debian.org/security/2020/dsa-4758
https://lists.x.org/archives/xorg-announce/2020-July/003051.html
https://www.openwall.com/lists/oss-security/2020/07/31/2
https://lists.debian.org/debian-lts-announce/2020/08/msg00057.html
SuSE Security Announcement: openSUSE-SU-2020:1279 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00066.html
SuSE Security Announcement: openSUSE-SU-2020:1302 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00075.html
https://usn.ubuntu.com/4488-1/
Common Vulnerability Exposure (CVE) ID: CVE-2020-14361
https://bugzilla.redhat.com/show_bug.cgi?id=1869142
https://www.zerodayinitiative.com/advisories/ZDI-20-1418/
Common Vulnerability Exposure (CVE) ID: CVE-2020-14362
https://bugzilla.redhat.com/show_bug.cgi?id=1869144
https://www.zerodayinitiative.com/advisories/ZDI-20-1419/
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