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Fencer Intel
high 8.8

CVE-2011-2692 json

The png_handle_sCAL function in pngrutil.c in libpng 1.0.x before 1.0.55, 1.2.x before 1.2.45, 1.4.x before 1.4.8, and 1.5.x before 1.5.4 d…

published 15y ago modified 4mo ago also EUVD-2011-2673

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.2%
EPSS 4.2% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

The png_handle_sCAL function in pngrutil.c in libpng 1.0.x before 1.0.55, 1.2.x before 1.2.45, 1.4.x before 1.4.8, and 1.5.x before 1.5.4 does not properly handle invalid sCAL chunks, which allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via a crafted PNG image that triggers the reading of uninitialized memory.

Patch / fix

  • libpng libpng 1.0.55, 1.2.45, 1.4.8, 1.5.4
  • libpng RHEL 6 2:1.2.46-1.el6_1
  • libpng RHEL 5 2:1.2.10-7.1.el5_7.5
  • libpng RHEL 4 2:1.2.7-8.el4
  • libpng10 RHEL 4 1.0.16-9.el4

red hat advisories RHSA-2011:1105RHSA-2011:1104RHSA-2011:1103

  • libpng16 openSUSE Tumbleweed 1.6.26-1.1

opensuse advisories openSUSE-SU-2024:10050-1

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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-2011-2692 updated cvss 4.3

libpng: Invalid read when handling empty sCAL chunks

  • Red Hat Enterprise Linux (v. 5 server) libpng 1.2.10-7.1.el5_7.5
    fixed: vendor fix RHSA-2011:1104
  • Red Hat Enterprise Linux AS version 4 libpng 1.2.7-8.el4, libpng10 1.0.16-9.el4
    fixed: vendor fix RHSA-2011:1103
  • Red Hat Enterprise Linux Desktop (v. 5 client) libpng 1.2.10-7.1.el5_7.5
    fixed: vendor fix RHSA-2011:1104
  • Red Hat Enterprise Linux Desktop version 4 libpng 1.2.7-8.el4, libpng10 1.0.16-9.el4 Red Hat Enterprise Linux ES version 4 libpng 1.2.7-8.el4, libpng10 1.0.16-9.el4
    fixed: vendor fix RHSA-2011:1103
  • Red Hat Enterprise Linux Server (v. 6) libpng 1.2.46-1.el6_1 Red Hat Enterprise Linux Server Optional (v. 6) libpng 1.2.46-1.el6_1
    fixed: vendor fix RHSA-2011:1105
  • Red Hat Enterprise Linux WS version 4 libpng 1.2.7-8.el4, libpng10 1.0.16-9.el4
    fixed: vendor fix RHSA-2011:1103
  • Red Hat RHEL Desktop Workstation (v. 5 client) libpng 1.2.10-7.1.el5_7.5
    fixed: vendor fix RHSA-2011:1104

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

4.23% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • sourceforge.net http://sourceforge.net/mailarchive/forum.php?thread_name=003101cc2790%24fb5d6e80%24f2184b80%24%40acm.org&forum_name=png-mng-implement referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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.