CVE-2020-14347
First published: Thu Jul 30 2020(Updated: )
A flaw was found in the way xserver memory was not properly initialized. This could leak parts of server memory to the X client. In cases where Xorg server runs with elevated privileges, this could result in possible ASLR bypass. Xorg-server before version 1.20.9 is vulnerable.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/xorg-server | <=2:1.20.8-2<=2:1.20.4-1 | 2:1.20.9-1 2:1.20.4-1+deb10u1 |
| X.org Xorg-server | <1.20.9 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =20.04 | |
| IBM Cloud Pak for Security (CP4S) | <=1.7.2.0 | |
| IBM Cloud Pak for Security (CP4S) | <=1.7.1.0 | |
| IBM Cloud Pak for Security (CP4S) | <=1.7.0.0 | |
| redhat/xorg-server | <1.20.9 | 1.20.9 |
| ubuntu/xorg-server | <2:1.19.6-1ubuntu4.5 | 2:1.19.6-1ubuntu4.5 |
| ubuntu/xorg-server | <2:1.20.8-2ubuntu2.3 | 2:1.20.8-2ubuntu2.3 |
| ubuntu/xorg-server | <2:1.15.1-0ubuntu2.11+ | 2:1.15.1-0ubuntu2.11+ |
| ubuntu/xorg-server | <1.20.9 | 1.20.9 |
| ubuntu/xorg-server | <2:1.18.4-0ubuntu0.9 | 2:1.18.4-0ubuntu0.9 |
| ubuntu/xorg-server-hwe-16.04 | <1.20.9 | 1.20.9 |
| ubuntu/xorg-server-hwe-16.04 | <2:1.19.6-1ubuntu4.1~16.04.3 | 2:1.19.6-1ubuntu4.1~16.04.3 |
| ubuntu/xorg-server-hwe-18.04 | <2:1.20.8-2ubuntu2.2~18.04.2 | 2:1.20.8-2ubuntu2.2~18.04.2 |
| ubuntu/xorg-server-hwe-18.04 | <1.20.9 | 1.20.9 |
| debian/xorg-server | 2:1.20.4-1+deb10u4 2:1.20.4-1+deb10u14 2:1.20.11-1+deb11u11 2:1.20.11-1+deb11u13 2:21.1.7-3+deb12u5 2:21.1.7-3+deb12u7 2:21.1.12-1 |
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Reference Links
- https://security-tracker.debian.org/tracker/CVE-2020-14347
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14347
- https://lists.x.org/archives/xorg-announce/2020-July/003051.html
- https://gitlab.freedesktop.org/xorg/xserver/-/commit/aac28e162e5108510065ad4c323affd6deffd816
- https://security-tracker.debian.org/tracker/CVE-2020-14345
- https://security-tracker.debian.org/tracker/CVE-2020-14346
- https://security-tracker.debian.org/tracker/CVE-2020-14361
- https://security-tracker.debian.org/tracker/CVE-2020-14362
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=968986
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00066.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00075.html
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14347
- https://lists.debian.org/debian-lts-announce/2020/08/msg00057.html
- https://security.gentoo.org/glsa/202012-01
- https://usn.ubuntu.com/4488-1/
- https://usn.ubuntu.com/4488-2/
- https://www.debian.org/security/2020/dsa-4758
- https://www.openwall.com/lists/oss-security/2020/07/31/2
- https://exchange.xforce.ibmcloud.com/vulnerabilities/186165
- https://www.ibm.com/support/pages/node/6493729 (Advisory)
- https://launchpad.net/bugs/cve/CVE-2020-14347
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1862517
- https://access.redhat.com/errata/RHSA-2020:5408
- https://access.redhat.com/security/cve/cve-2020-14347
- https://access.redhat.com/errata/RHSA-2021:1804
- https://bugzilla.redhat.com/show_bug.cgi?id=1862258
- https://ubuntu.com/security/notices/USN-4488-1
- https://ubuntu.com/security/notices/USN-4488-2
- https://www.cve.org/CVERecord?id=CVE-2020-14347
- https://nvd.nist.gov/vuln/detail/CVE-2020-14347
- https://ubuntu.com/security/CVE-2020-14347
Frequently Asked Questions
What is CVE-2020-14347?
CVE-2020-14347 is a vulnerability in X.Org Xserver that allows a local authenticated attacker to obtain sensitive information.
How does CVE-2020-14347 work?
CVE-2020-14347 works by exploiting a failure to initialize the memory in xserver pixmap data, which can leak parts of sensitive information.
What is the severity of CVE-2020-14347?
CVE-2020-14347 has a severity rating of high.
Which software versions are affected by CVE-2020-14347?
The affected software versions of CVE-2020-14347 are xorg-server-hwe-18.04 (2:1.20.8-2ubuntu2.2~18.04.2), xorg-server-hwe-18.04 (1.20.9), xorg-server (2:1.19.6-1ubuntu4.5), xorg-server (2:1.20.8-2ubuntu2.3), xorg-server (2:1.15.1-0ubuntu2.11+), xorg-server (2:1.18.4-0ubuntu0.9), xorg-server-hwe-16.04 (1.20.9), xorg-server-hwe-16.04 (2:1.19.6-1ubuntu4.1~16.04.3), xorg-server (1.20.9), xorg-server (2:1.20.9-1), and xorg-server (2:1.20.4-1+deb10u1).
How do I fix CVE-2020-14347?
To fix CVE-2020-14347, update to the latest version of the affected software packages: xorg-server-hwe-18.04 (2:1.20.8-2ubuntu2.2~18.04.2), xorg-server-hwe-18.04 (1.20.9), xorg-server (2:1.19.6-1ubuntu4.5), xorg-server (2:1.20.8-2ubuntu2.3), xorg-server (2:1.15.1-0ubuntu2.11+), xorg-server (2:1.18.4-0ubuntu0.9), xorg-server-hwe-16.04 (1.20.9), xorg-server-hwe-16.04 (2:1.19.6-1ubuntu4.1~16.04.3), xorg-server (1.20.9), xorg-server (2:1.20.9-1), and xorg-server (2:1.20.4-1+deb10u1).
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