CVE-2021-31535

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Summary

CVECVE-2021-31535
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-05-27 13:15:00 UTC
Updated2023-11-07 03:34:00 UTC
DescriptionLookupCol.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.

Risk And Classification

Problem Types: CWE-120

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Fedoraproject Fedora 33 All All All
Application X.org Libx11 All All All All
Operating System X.org X Window System All All All All

References

ReferenceSourceLinkTags
Pony Mail! MLIST lists.apache.org
Pony Mail! MLIST lists.apache.org
[kafka-dev] 20210901 Re: [EXTERNAL] Re: Security vulnerabilities in kafka:2.13-2.6.0/2.7.0 docker image lists.apache.org
oss-security - libX11 security advisory: May 18, 2021 MISC www.openwall.com
Pony Mail! MLIST lists.apache.org
libX11 Insufficient Length Check / Injection ≈ Packet Storm MISC packetstormsecurity.com
[kafka-users] 20210901 Re: [EXTERNAL] Re: Security vulnerabilities in kafka:2.13-2.6.0/2.7.0 docker image lists.apache.org
Debian -- Security Information -- DSA-4920-1 libx11 DEBIAN www.debian.org
Reject string longer than USHRT_MAX before sending them on the wire (8d2e02ae) · Commits · xorg / lib / libX11 · GitLab MISC gitlab.freedesktop.org
unparalleled.eu/publications/2021/advisory-unpar-2021-1.txt MISC unparalleled.eu
oss-security - libx11 API Protocol Command Injection MISC www.openwall.com
The xorg Archives MISC lists.freedesktop.org
Pony Mail! MLIST lists.apache.org
[kafka-users] 20210831 Security vulnerabilities in kafka:2.13-2.6.0/2.7.0 docker image lists.apache.org
[SECURITY] Fedora 33 Update: libX11-1.7.2-3.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
Using Xterm to Navigate the Huge Color Space MISC unparalleled.eu
[SECURITY] [DLA 2666-1] libx11 security update MLIST lists.debian.org
Full Disclosure: CVE-2021-31535 libX11 Insufficient Length Checks PoC and Archeology FULLDISC seclists.org
[SECURITY] Fedora 33 Update: libX11-1.7.2-3.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
oss-security - libX11 security advisory: May 18, 2021 MLIST www.openwall.com
X.Org X11 library: Denial of service (GLSA 202105-16) — Gentoo security GENTOO security.gentoo.org
libX11 security advisory: May 11, 2021 MISC lists.x.org
CVE-2021-31535 X.Org X Vulnerability in NetApp Products | NetApp Product Security CONFIRM security.netapp.com
[kafka-dev] 20210831 Security vulnerabilities in kafka:2.13-2.6.0/2.7.0 docker image lists.apache.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159372 Oracle Enterprise Linux Security Update for libX11 (ELSA-2021-3296)
  • 159490 Oracle Enterprise Linux Security Update for libX11 (ELSA-2021-4326)
  • 178606 Debian Security Update for libx11 (DLA 2666-1)
  • 178619 Debian Security Update for libx11 (DSA 4920-1)
  • 178634 Debian Security Update for libx11 (DSA 4920-1)
  • 179854 Debian Security Update for libx11 (CVE-2021-31535)
  • 198385 Ubuntu Security Notification for libx11 vulnerability (USN-4966-1)
  • 239586 Red Hat Update for libX11 (RHSA-2021:3296)
  • 239780 Red Hat Update for libx11 (RHSA-2021:4326)
  • 257108 CentOS Security Update for libX11 (CESA-2021:3296)
  • 281843 Fedora Security Update for libX11 (FEDORA-2021-62bb9998b2)
  • 296059 Oracle Solaris 11.4 Support Repository Update (SRU) 36.0.1.101.2 Missing (CPUJUL2021)
  • 352474 Amazon Linux Security Advisory for libX11: ALAS-2021-1517
  • 352488 Amazon Linux Security Advisory for libX11: ALAS2-2021-1686
  • 352824 Amazon Linux Security Advisory for libX11: AL2012-2021-348
  • 377071 Alibaba Cloud Linux Security Update for libx11 (ALINUX2-SA-2021:0052)
  • 500335 Alpine Linux Security Update for libx11
  • 501422 Alpine Linux Security Update for libx11
  • 504100 Alpine Linux Security Update for libx11
  • 670647 EulerOS Security Update for libX11 (EulerOS-SA-2021-2405)
  • 670714 EulerOS Security Update for libX11 (EulerOS-SA-2021-2472)
  • 670749 EulerOS Security Update for libX11 (EulerOS-SA-2021-2507)
  • 670776 EulerOS Security Update for libX11 (EulerOS-SA-2021-2534)
  • 670800 EulerOS Security Update for libX11 (EulerOS-SA-2021-2558)
  • 670898 EulerOS Security Update for libX11 (EulerOS-SA-2021-2558)
  • 690123 Free Berkeley Software Distribution (FreeBSD) Security Update for libx11 (58d6ed66-c2e8-11eb-9fb0-6451062f0f7a)
  • 710100 Gentoo Linux X.Org X11 library Denial of service vulnerability (GLSA 202105-16)
  • 750037 SUSE Enterprise Linux Security Update for libX11 (SUSE-SU-2021:1766-1)
  • 750039 SUSE Enterprise Linux Security Update for libX11 (SUSE-SU-2021:1765-1)
  • 750043 SUSE Enterprise Linux Security Update for libX11 (SUSE-SU-2021:1766-1)
  • 750045 SUSE Enterprise Linux Security Update for libX11 (SUSE-SU-2021:1765-1)
  • 750061 SUSE Enterprise Linux Security Update for libX11 (SUSE-SU-2021:1765-1)
  • 750122 SUSE Enterprise Linux Security Update for libX11 (SUSE-SU-2021:1892-1)
  • 750130 SUSE Enterprise Linux Security Update for libX11 (SUSE-SU-2021:1897-1)
  • 750167 OpenSUSE Security Update for libX11 (openSUSE-SU-2021:0857-1)
  • 750186 OpenSUSE Security Update for libX11 (openSUSE-SU-2021:0807-1)
  • 750801 OpenSUSE Security Update for libX11 (openSUSE-SU-2021:1897-1)
  • 905131 Common Base Linux Mariner (CBL-Mariner) Security Update for libX11 (12509)
  • 940177 AlmaLinux Security Update for libX11 (ALSA-2021:4326)
  • 960405 Rocky Linux Security Update for libX11 (RLSA-2021:4326)
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