The png_handle_sCAL function in pngrutil.c in libpng 1.0.x before 1.0.55, 1.2.x before…
Priority MEDIUM 45CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.
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.
Why it matters now
EPSS 0.04227 91st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 3 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:libpng:libpng:*:*:*:*:*:*:*:* | 1.0.0 to before 1.0.55; 1.2.0 to before 1.2.45; 1.4.0 to before 1.4.8; 1.5.0 to before 1.5.4 | Vulnerable | pnggroup |
| cpe:2.3:o:fedoraproject:fedora:14:*:*:*:*:*:*:* | 14 | Vulnerable | Fedoraproject |
| cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:* | 5.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Debian |
| cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:*:*:*:* | 8.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:*:*:*:* | 10.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:10.10:*:*:*:*:*:*:* | 10.10 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:* | 11.04 | Vulnerable | Canonical |
- cpe:2.3:a:libpng:libpng:*:*:*:*:*:*:*:* Versions 1.0.0 to before 1.0.55; 1.2.0 to before 1.2.45; 1.4.0 to before 1.4.8; 1.5.0 to before 1.5.4 Vulnerable ·pnggroup
- cpe:2.3:o:fedoraproject:fedora:14:*:*:*:*:*:*:* Versions 14 Vulnerable ·Fedoraproject
- cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Debian
- cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:*:*:*:* Versions 8.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:*:*:*:* Versions 10.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:10.10:*:*:*:*:*:*:* Versions 10.10 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:* Versions 11.04 Vulnerable ·Canonical
Remediation
Red Hat 3 advisories
- RHSA-2011:1105 Released 2011-07-28 · Red Hat rating Moderatelibpng security update
- Red Hat Enterprise Linux Server (v. 6) libpng-2:1.2.46-1.el6_1, libpng-2:1.2.46-1.el6_1.ppc, libpng-devel-2:1.2.46-1.el6_1 +1
- Red Hat Enterprise Linux Server Optional (v. 6) libpng-2:1.2.46-1.el6_1, libpng-static-2:1.2.46-1.el6_1
- RHSA-2011:1104 Released 2011-07-28 · Red Hat rating Moderatelibpng security update
- RHEL Desktop Workstation (v. 5 client) libpng-2:1.2.10-7.1.el5_7.5, libpng-devel-2:1.2.10-7.1.el5_7.5, libpng-devel-2:1.2.10-7.1.el5_7.5.i386
- Red Hat Enterprise Linux (v. 5 server) libpng-2:1.2.10-7.1.el5_7.5, libpng-2:1.2.10-7.1.el5_7.5.i386, libpng-2:1.2.10-7.1.el5_7.5.ia64 +5
- Red Hat Enterprise Linux Desktop (v. 5 client) libpng-2:1.2.10-7.1.el5_7.5, libpng-2:1.2.10-7.1.el5_7.5.i386
- RHSA-2011:1103 Released 2011-07-28 · Red Hat rating Moderatelibpng security update
- Red Hat Enterprise Linux AS version 4 libpng-2:1.2.7-8.el4, libpng-2:1.2.7-8.el4.i386, libpng-2:1.2.7-8.el4.ia64 +13
- Red Hat Enterprise Linux Desktop version 4 libpng-2:1.2.7-8.el4, libpng-2:1.2.7-8.el4.i386, libpng-devel-2:1.2.7-8.el4 +5
- Red Hat Enterprise Linux ES version 4 libpng-2:1.2.7-8.el4, libpng-2:1.2.7-8.el4.i386, libpng-2:1.2.7-8.el4.ia64 +9
- Red Hat Enterprise Linux WS version 4 libpng-2:1.2.7-8.el4, libpng-2:1.2.7-8.el4.i386, libpng-2:1.2.7-8.el4.ia64 +9
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| RHEL Desktop Workstation (v. 5 client) | Fixed | RHSA-2011:1104 |
| Red Hat Enterprise Linux (v. 5 server) | Fixed | RHSA-2011:1104 |
| Red Hat Enterprise Linux AS version 4 | Fixed | RHSA-2011:1103 |
| Red Hat Enterprise Linux Desktop (v. 5 client) | Fixed | RHSA-2011:1104 |
| Red Hat Enterprise Linux Desktop version 4 | Fixed | RHSA-2011:1103 |
| Red Hat Enterprise Linux ES version 4 | Fixed | RHSA-2011:1103 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2011:1105 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2011:1105 |
| Red Hat Enterprise Linux WS version 4 | Fixed | RHSA-2011:1103 |
Timeline
- 2026-10-02 Threatist record created from CVE-2011-2692
- 2026-10-03 Alias added: GHSA-jggw-3xrj-fwp3
References
Advisory 15
- RHSA-2011:1103
- USN-1175-1
- MDVSA-2011:151
- GLSA-201206-15
- http://www.libpng.org/pub/png/libpng.html
- FEDORA-2011-9336
- DSA-2287
- APPLE-SA-2011-10-12-3
- RHSA-2011:1105
- [oss-security] 20110713 Security issues fixed in libpng 1.5.4
- http://support.apple.com/kb/HT5002
- http://support.apple.com/kb/HT5281
- RHSA-2011:1104
- VU#819894
- APPLE-SA-2012-05-09-1
Sources
- CVE-2011-2692 · CVE Program
- CVE-2011-2692 · NVD
- FIRST EPSS
- GHSA-jggw-3xrj-fwp3 · GitHub Advisory Database · CC BY 4.0
- CVE-2011-2692 · Red Hat security data · CC BY 4.0
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