libpng: Invalid read when handling empty sCAL chunks
Published Jul 17, 2011
8.8
HIGHCVSS 3.1
EPSS 4.23%
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.
Affected products
No data.
Configuration 1
Configuration 2
- 14
Configuration 3
- 5.0
- 6.0
Configuration 4
- 8.04
- 10.04
- 10.10
- 11.04
No data.
Red Hat Enterprise Linux 4
libpng-2:1.2.7-8.el4
Fixed · RHSA-2011:1103
Red Hat Enterprise Linux 4
libpng10-0:1.0.16-9.el4
Fixed · RHSA-2011:1103
Red Hat Enterprise Linux 5
libpng-2:1.2.10-7.1.el5_7.5
Fixed · RHSA-2011:1104
Red Hat Enterprise Linux 6
libpng-2:1.2.46-1.el6_1
Fixed · RHSA-2011:1105
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | libpng-2:1.2.7-8.el4 | Fixed | RHSA-2011:1103 |
| Red Hat Enterprise Linux 4 | libpng10-0:1.0.16-9.el4 | Fixed | RHSA-2011:1103 |
| Red Hat Enterprise Linux 5 | libpng-2:1.2.10-7.1.el5_7.5 | Fixed | RHSA-2011:1104 |
| Red Hat Enterprise Linux 6 | libpng-2:1.2.46-1.el6_1 | Fixed | RHSA-2011:1105 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.23% (0.04227) | 90.70th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.25% (0.04246) | 89.73th | v5 (v2026.06.15) |
| Dec 7, 2025 | 7.10% (0.07097) | 91.17th | v4 (v2025.03.14) |
| Oct 19, 2025 | 6.01% (0.06010) | 90.25th | v4 (v2025.03.14) |
| Aug 14, 2025 | 7.10% (0.07097) | 91.13th | v4 (v2025.03.14) |
| Apr 17, 2025 | 3.21% (0.03205) | 86.30th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.12% (0.07125) | 85.58th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.79% (0.05788) | 89.82th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.05% (0.02051) | 89.46th | v3 (v2023.03.01) |
| Aug 5, 2023 | 2.05% (0.02051) | 87.53th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.29% (0.02287) | 87.91th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.93% (0.03932) | 85.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.93% (0.03932) | 84.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.93% (0.03932) | 67.70th | v2 (v2022.01.01) |
References (31)
- http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng%3Ba=commit%3Bh=61a2d8a2a7b03023e63eae9a3e64607aaaa6d339 x_refsource_CONFIRM
- http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html vendor-advisoryx_refsource_APPLEMailing ListThird Party Advisory
- http://lists.apple.com/archives/security-announce/2012/May/msg00001.html vendor-advisoryx_refsource_APPLEMailing ListThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063118.html vendor-advisoryx_refsource_FEDORAMailing ListThird Party Advisory
- http://secunia.com/advisories/45046 third-party-advisoryx_refsource_SECUNIABroken Link
- http://secunia.com/advisories/45405 third-party-advisoryx_refsource_SECUNIABroken Link
- http://secunia.com/advisories/45415 third-party-advisoryx_refsource_SECUNIABroken Link
- http://secunia.com/advisories/45445 third-party-advisoryx_refsource_SECUNIABroken Link
- http://secunia.com/advisories/45460 third-party-advisoryx_refsource_SECUNIABroken Link
- http://secunia.com/advisories/45461 third-party-advisoryx_refsource_SECUNIABroken Link
- http://secunia.com/advisories/45492 third-party-advisoryx_refsource_SECUNIABroken Link
- http://secunia.com/advisories/49660 third-party-advisoryx_refsource_SECUNIABroken Link
- http://security.gentoo.org/glsa/glsa-201206-15.xml vendor-advisoryx_refsource_GENTOOThird Party Advisory
- http://sourceforge.net/mailarchive/forum.php?thread_name=003101cc2790%24fb5d6e80%24f2184b80%24%40acm.org&forum_name=png-mng-implement x_refsource_CONFIRMExploitIssue TrackingThird Party Advisory
- http://support.apple.com/kb/HT5002 x_refsource_CONFIRMThird Party Advisory
- http://support.apple.com/kb/HT5281 x_refsource_CONFIRMThird Party Advisory
- http://www.debian.org/security/2011/dsa-2287 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.kb.cert.org/vuls/id/819894 third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource
- http://www.libpng.org/pub/png/libpng.html x_refsource_CONFIRMProductVendor Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:151 vendor-advisoryx_refsource_MANDRIVABroken Link
- http://www.openwall.com/lists/oss-security/2011/07/13/2 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.redhat.com/support/errata/RHSA-2011-1103.html vendor-advisoryx_refsource_REDHATBroken Link
- http://www.redhat.com/support/errata/RHSA-2011-1104.html vendor-advisoryx_refsource_REDHATBroken Link
- http://www.redhat.com/support/errata/RHSA-2011-1105.html vendor-advisoryx_refsource_REDHATBroken Link
- http://www.securityfocus.com/bid/48618 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-1175-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2011-2692 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=720612 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/68536 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://nvd.nist.gov/vuln/detail/CVE-2011-2692
- https://www.cve.org/CVERecord?id=CVE-2011-2692
Change history (0)
No recorded changes yet.