CVE-2011-2692
HIGHCVSS 8.8/10EPSS 4.25%
Last modified
CVE-2011-2692 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 4.25% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Libpng | Libpng | >= 1.0.0, < 1.0.55 |
| Libpng | Libpng | >= 1.2.0, < 1.2.45 |
| Libpng | Libpng | >= 1.4.0, < 1.4.8 |
| Libpng | Libpng | >= 1.5.0, < 1.5.4 |
| Fedoraproject | Fedora | 14 |
| Debian | Debian Linux | 5.0 |
| Debian | Debian Linux | 6.0 |
| Canonical | Ubuntu Linux | 8.04 |
| Canonical | Ubuntu Linux | 10.04 |
| Canonical | Ubuntu Linux | 10.10 |
| Canonical | Ubuntu Linux | 11.04 |
References
- http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.htmlMailing List, Third Party Advisory
- http://lists.apple.com/archives/security-announce/2012/May/msg00001.htmlMailing List, Third Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063118.htmlMailing List, Third Party Advisory
- http://secunia.com/advisories/45046Broken Link
- http://secunia.com/advisories/45405Broken Link
- http://secunia.com/advisories/45415Broken Link
- http://secunia.com/advisories/45445Broken Link
- http://secunia.com/advisories/45460Broken Link
- http://secunia.com/advisories/45461Broken Link
- http://secunia.com/advisories/45492Broken Link
- http://secunia.com/advisories/49660Broken Link
- http://security.gentoo.org/glsa/glsa-201206-15.xmlThird Party Advisory
- http://sourceforge.net/mailarchive/forum.php?thread_name=003101cc2790%24fb5d6e80%24f2184b80%24%40acm.org&forum_name=png-mng-implementExploit, Issue Tracking, Third Party Advisory
- http://support.apple.com/kb/HT5002Third Party Advisory
- http://support.apple.com/kb/HT5281Third Party Advisory
- http://www.debian.org/security/2011/dsa-2287Third Party Advisory
- http://www.kb.cert.org/vuls/id/819894Third Party Advisory, US Government Resource
- http://www.libpng.org/pub/png/libpng.htmlProduct, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2011/07/13/2Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/48618Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-1175-1Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=720612Issue Tracking, Patch, Third Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/68536Third Party Advisory, VDB Entry
- http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.htmlMailing List, Third Party Advisory
- http://lists.apple.com/archives/security-announce/2012/May/msg00001.htmlMailing List, Third Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063118.htmlMailing List, Third Party Advisory
- http://secunia.com/advisories/45046Broken Link
- http://secunia.com/advisories/45405Broken Link
- http://secunia.com/advisories/45415Broken Link
- http://secunia.com/advisories/45445Broken Link
- http://secunia.com/advisories/45460Broken Link
- http://secunia.com/advisories/45461Broken Link
- http://secunia.com/advisories/45492Broken Link
- http://secunia.com/advisories/49660Broken Link
- http://security.gentoo.org/glsa/glsa-201206-15.xmlThird Party Advisory
- http://sourceforge.net/mailarchive/forum.php?thread_name=003101cc2790%24fb5d6e80%24f2184b80%24%40acm.org&forum_name=png-mng-implementExploit, Issue Tracking, Third Party Advisory
- http://support.apple.com/kb/HT5002Third Party Advisory
- http://support.apple.com/kb/HT5281Third Party Advisory
- http://www.debian.org/security/2011/dsa-2287Third Party Advisory
- http://www.kb.cert.org/vuls/id/819894Third Party Advisory, US Government Resource
- http://www.libpng.org/pub/png/libpng.htmlProduct, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2011/07/13/2Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/48618Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-1175-1Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=720612Issue Tracking, Patch, Third Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/68536Third Party Advisory, VDB Entry
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2011-2692?
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.
How severe is CVE-2011-2692?
CVE-2011-2692 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 4.25% probability of exploitation in the next 30 days.
How do I fix CVE-2011-2692?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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