libpng: Crash in png_default_error due to use of NULL Pointer
Published Jul 17, 2011
6.5
MEDIUMCVSS 3.1
EPSS 3.86%
Description
The png_err function in pngerror.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 makes a function call using a NULL pointer argument instead of an empty-string argument, which allows remote attackers to cause a denial of service (application crash) via a crafted PNG image.
Affected products
No data.
Configuration 1
Configuration 2
- 14
Configuration 3
- 5.0
- 6.0
No data.
Red Hat Enterprise Linux 4
libpng
Not affected
Red Hat Enterprise Linux 5
libpng
Not affected
Red Hat Enterprise Linux 6
libpng
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | libpng | Not affected | n/a |
| Red Hat Enterprise Linux 5 | libpng | Not affected | n/a |
| Red Hat Enterprise Linux 6 | libpng | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of libpng as shipped with Red Hat Enterprise Linux 4, 5, or 6.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:N/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 (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.86% (0.03861) | 89.85th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.73% (0.03727) | 88.35th | v5 (v2026.06.15) |
| Jan 20, 2026 | 7.69% (0.07693) | 91.65th | v4 (v2025.03.14) |
| Oct 19, 2025 | 5.81% (0.05813) | 90.08th | v4 (v2025.03.14) |
| May 18, 2025 | 2.58% (0.02580) | 84.79th | v4 (v2025.03.14) |
| Apr 17, 2025 | 4.24% (0.04239) | 88.14th | v4 (v2025.03.14) |
| Mar 30, 2025 | 7.22% (0.07222) | 90.75th | v4 (v2025.03.14) |
| Mar 29, 2025 | 9.90% (0.09903) | 88.25th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.22% (0.07222) | 90.96th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.21% (0.01208) | 85.88th | v3 (v2023.03.01) |
| Apr 18, 2024 | 1.21% (0.01208) | 85.06th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.21% (0.01208) | 83.06th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.41% (0.03407) | 84.65th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.41% (0.03407) | 83.10th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.41% (0.03407) | 66.20th | v2 (v2022.01.01) |
References (20)
- http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng%3Ba=commit%3Bh=9dad5e37aef295b4ef8dea39392b652deebc9261 x_refsource_CONFIRM
- http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.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://marc.info/?l=bugtraq&m=133951357207000&w=2 vendor-advisoryx_refsource_HPMailing 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/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://support.apple.com/kb/HT5002 x_refsource_CONFIRMThird Party Advisory
- http://www.debian.org/security/2011/dsa-2287 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- 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.securityfocus.com/bid/48660 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2011-2691 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=720608 x_refsource_CONFIRMExploitIssue TrackingPatchThird Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/68537 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://nvd.nist.gov/vuln/detail/CVE-2011-2691
- https://www.cve.org/CVERecord?id=CVE-2011-2691
Change history (0)
No recorded changes yet.