CVE-2021-31535
CVE-2021-31535
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
LookupCol.c in X.Org X through X11R7.7 and libX11 before 1.7.1 might allow remote attackers to execute arbitrary code. The libX11 XLookupColor request (intended for server-side color lookup) contains a flaw allowing a client to send color-name requests with a name longer than the maximum size allowed by the protocol (and also longer than the maximum packet size for normal-sized packets). The user-controlled data exceeding the maximum size is then interpreted by the server as additional X protocol requests and executed, e.g., to disable X server authorization completely. For example, if the victim encounters malicious terminal control sequences for color codes, then the attacker may be able to take full control of the running graphical session.
CVSS 9.8 · Critique · EPSS 10,6% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: system
Produits et versions concernés
n/a
- Versions du logiciel
- n/a: Concernée
Aucun correctif publié
libx11 Debian:12
- Plages de versions concernées
- ECOSYSTEM: < 2:1.7.1-1
Mettez à jour vers 2:1.7.1-1
libx11 Debian:13
- Plages de versions concernées
- ECOSYSTEM: < 2:1.7.1-1
Mettez à jour vers 2:1.7.1-1
libx11 Debian:14
- Plages de versions concernées
- ECOSYSTEM: < 2:1.7.1-1
Mettez à jour vers 2:1.7.1-1
libx11 Ubuntu:Pro:14.04:LTS
- Versions du logiciel
- 2:1.6.1-1ubuntu1
- 2:1.6.1-1ubuntu2
- 2:1.6.2-1ubuntu1
- 2:1.6.2-1ubuntu2
- 2:1.6.2-1ubuntu2.1
- 2:1.6.2-1ubuntu2.1+esm1
- Plages de versions concernées
- ECOSYSTEM: < 2:1.6.2-1ubuntu2.1+esm2
Mettez à jour vers 2:1.6.2-1ubuntu2.1+esm2
libx11 Ubuntu:Pro:16.04:LTS
- Versions du logiciel
- 2:1.6.3-1ubuntu2
- 2:1.6.3-1ubuntu2.1
- 2:1.6.3-1ubuntu2.2
- Plages de versions concernées
- ECOSYSTEM: < 2:1.6.3-1ubuntu2.2+esm1
Mettez à jour vers 2:1.6.3-1ubuntu2.2+esm1
libx11 Ubuntu:18.04:LTS
- Versions du logiciel
- 2:1.6.4-3
- 2:1.6.4-3ubuntu0.1
- 2:1.6.4-3ubuntu0.2
- 2:1.6.4-3ubuntu0.3
- Plages de versions concernées
- ECOSYSTEM: < 2:1.6.4-3ubuntu0.4
Mettez à jour vers 2:1.6.4-3ubuntu0.4
libx11 Ubuntu:20.04:LTS
- Versions du logiciel
- 2:1.6.8-1
- 2:1.6.9-2
- 2:1.6.9-2ubuntu1
- 2:1.6.9-2ubuntu1.1
- Plages de versions concernées
- ECOSYSTEM: < 2:1.6.9-2ubuntu1.2
Mettez à jour vers 2:1.6.9-2ubuntu1.2
Sources originales
- https://unparalleled.eu/publications/2021/advisory-unpar-2021-1.txt
- https://lists.freedesktop.org/archives/xorg/
- http://www.openwall.com/lists/oss-security/2021/05/18/2
- http://seclists.org/fulldisclosure/2021/May/52
- http://packetstormsecurity.com/files/162737/libX11-Insufficient-Length-Check-Injection.html
- https://lists.debian.org/debian-lts-announce/2021/05/msg00021.html
- https://www.debian.org/security/2021/dsa-4920
- https://security.gentoo.org/glsa/202105-16
- https://www.openwall.com/lists/oss-security/2021/05/18/3
- https://www.openwall.com/lists/oss-security/2021/05/18/2
- https://unparalleled.eu/blog/2021/20210518-using-xterm-to-navigate-the-huge-color-space/
- https://lists.x.org/archives/xorg-announce/2021-May/003088.html
- https://gitlab.freedesktop.org/xorg/lib/libx11/-/commit/8d2e02ae650f00c4a53deb625211a0527126c605
- https://security.netapp.com/advisory/ntap-20210813-0001/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEOT4RLB76RVPJQKGGTIKTBIOLHX2NR6/
- https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55308aacc%40%3Cdev.kafka.apache.org%3E
- https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55308aacc%40%3Cusers.kafka.apache.org%3E
- https://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111c06ccb7%40%3Cusers.kafka.apache.org%3E
- https://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111c06ccb7%40%3Cdev.kafka.apache.org%3E
- https://nvd.nist.gov/vuln/detail/CVE-2021-31535