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Fencer Intel
medium 6.8

CVE-2013-1997 json

Multiple buffer overflows in X.org libX11 1.5.99.901 (1.6 RC1) and earlier allow X servers to cause a denial of service (crash) and possibl…

published 2013-06-15 13 y ago modified 2026-06-16 4 mo ago also EUVD-2013-1985

cvss
6.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

Multiple buffer overflows in X.org libX11 1.5.99.901 (1.6 RC1) and earlier allow X servers to cause a denial of service (crash) and possibly execute arbitrary code via crafted length or index values to the (1) XAllocColorCells, (2) _XkbReadGetDeviceInfoReply, (3) _XkbReadGeomShapes, (4) _XkbReadGetGeometryReply, (5) _XkbReadKeySyms, (6) _XkbReadKeyActions, (7) _XkbReadKeyBehaviors, (8) _XkbReadModifierMap, (9) _XkbReadExplicitComponents, (10) _XkbReadVirtualModMap, (11) _XkbReadGetNamesReply, (12) _XkbReadGetMapReply, (13) _XimXGetReadData, (14) XListFonts, (15) XListExtensions, and (16) XGetFontPath functions.

Patch / fix

  • libx11 Debian 14, Debian 13, Debian 12 2:1.5.0-1+deb7u1

debian advisories DEBIAN-CVE-2013-1997

  • libXi RHEL 6 1.7.2-2.2.el6
  • libXp RHEL 6 1.0.2-2.1.el6
  • libXt RHEL 6 1.1.4-6.1.el6
  • libXv RHEL 6 1.0.9-2.1.el6
  • libdmx RHEL 6 1.1.3-3.el6
  • libX11 RHEL 6 1.6.0-2.2.el6
  • libxcb RHEL 6 1.9.1-2.el6
  • libXext RHEL 6 1.3.2-2.1.el6

red hat advisories RHSA-2014:1436

  • xorg-x11-libX11 SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 7.4-5.11.68.1

suse advisories SUSE-SU-2017:0644-1

  • libX11 openSUSE Tumbleweed 1.6.4-2.1

opensuse advisories openSUSE-SU-2024:10395-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2013-1997 updated cvss 4.3

libX11: Multiple Array Index error leading to heap-based OOB write

  • Red Hat Enterprise Linux 5 libX11
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Desktop (v. 6) libdmx 1.1.3-3.el6, libxcb 1.9.1-2.el6, libXi 1.7.2-2.2.el6, libXp 1.0.2-2.1.el6, libXt 1.1.4-6.1.el6, libXv 1.0.9-2.1.el6, +14 more Red Hat Enterprise Linux Desktop Optional (v. 6) libdmx 1.1.3-3.el6, xcb-proto 1.8-3.el6, libxcb-python 1.9.1-2.el6, libXxf86dga 1.1.4-2.1.el6 Red Hat Enterprise Linux HPC Node (v. 6) libxcb 1.9.1-2.el6, libXi 1.7.2-2.2.el6, libXp 1.0.2-2.1.el6, libXt 1.1.4-6.1.el6, libXv 1.0.9-2.1.el6, libX11 1.6.0-2.2.el6, +9 more Red Hat Enterprise Linux HPC Node Optional (v. 6) libdmx 1.1.3-3.el6, xcb-proto 1.8-3.el6, libXres 1.0.7-2.1.el6, libxcb-python 1.9.1-2.el6, libXxf86dga 1.1.4-2.1.el6, xkeyboard-config 2.11-1.el6 Red Hat Enterprise Linux Server (v. 6) libdmx 1.1.3-3.el6, libxcb 1.9.1-2.el6, libXi 1.7.2-2.2.el6, libXp 1.0.2-2.1.el6, libXt 1.1.4-6.1.el6, libXv 1.0.9-2.1.el6, +14 more Red Hat Enterprise Linux Server Optional (v. 6) libdmx 1.1.3-3.el6, xcb-proto 1.8-3.el6, libxcb-python 1.9.1-2.el6, libXxf86dga 1.1.4-2.1.el6
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) libdmx 1.1.3-3.el6, libxcb 1.9.1-2.el6, libXi 1.7.2-2.2.el6, libXp 1.0.2-2.1.el6, libXt 1.1.4-6.1.el6, libXv 1.0.9-2.1.el6, +14 more Red Hat Enterprise Linux Workstation Optional (v. 6) libdmx 1.1.3-3.el6, xcb-proto 1.8-3.el6, libxcb-python 1.9.1-2.el6, libXxf86dga 1.1.4-2.1.el6
    fixed: vendor fix RHSA-2014:1436

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.11% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.