CVE-2021-31535 (GCVE-0-2021-31535)
Vulnerability from cvelistv5
Published
2021-05-27 12:26
Modified
2024-08-03 23:03
Severity ?
CWE
  • n/a
Summary
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.
References
https://unparalleled.eu/publications/2021/advisory-unpar-2021-1.txt x_refsource_MISC
https://lists.freedesktop.org/archives/xorg/ x_refsource_MISC
http://www.openwall.com/lists/oss-security/2021/05/18/2 mailing-list, x_refsource_MLIST
http://seclists.org/fulldisclosure/2021/May/52 mailing-list, x_refsource_FULLDISC
http://packetstormsecurity.com/files/162737/libX11-Insufficient-Length-Check-Injection.html x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2021/05/msg00021.html mailing-list, x_refsource_MLIST
https://www.debian.org/security/2021/dsa-4920 vendor-advisory, x_refsource_DEBIAN
https://security.gentoo.org/glsa/202105-16 vendor-advisory, x_refsource_GENTOO
https://www.openwall.com/lists/oss-security/2021/05/18/3 x_refsource_MISC
https://www.openwall.com/lists/oss-security/2021/05/18/2 x_refsource_MISC
https://unparalleled.eu/blog/2021/20210518-using-xterm-to-navigate-the-huge-color-space/ x_refsource_MISC
https://lists.x.org/archives/xorg-announce/2021-May/003088.html x_refsource_MISC
https://gitlab.freedesktop.org/xorg/lib/libx11/-/commit/8d2e02ae650f00c4a53deb625211a0527126c605 x_refsource_MISC
https://security.netapp.com/advisory/ntap-20210813-0001/ x_refsource_CONFIRM
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEOT4RLB76RVPJQKGGTIKTBIOLHX2NR6/ vendor-advisory, x_refsource_FEDORA
https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55308aacc%40%3Cdev.kafka.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55308aacc%40%3Cusers.kafka.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111c06ccb7%40%3Cusers.kafka.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111c06ccb7%40%3Cdev.kafka.apache.org%3E mailing-list, x_refsource_MLIST
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.