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    CVE-2011-2691

    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.

    Published:Jul 7, 2011
    Last Modified:Apr 11, 2025
    EPS:Jul 17, 2011
    EPSS Score:0.03384
    CVSS Score:6.5

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Libpng
    Product
    Libpng

    Exploits

    https://bugzilla.redhat.com/show_bug.cgi?id=720608https://bugzilla.redhat.com/show_bug.cgi?id=720608

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-49975 (CVSS 7.5) — Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's mod_http leads to denial of …
    CVE-2026-9256 (CVSS 9.2) — NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerabilit…
    CVE-2026-31431 (CVSS 7.8) — In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating …
    CVE-2026-34757 (CVSS 5.1) — LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network …
    CVE-2026-4775 (CVSS 7.8) — A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerabili…
    CVE-2025-63261 (CVSS 7.8) — AWStats 8.0 is vulnerable to Command Injection via the open function…
    CVE-2026-3497 (CVSS 6.9) — Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions. This vulnerability affects …
    CVE-2026-1940 (CVSS 5.1) — An incomplete fix for CVE-2024-47778 allows an out-of-bounds read in gst_wavparse_adtl_chunk() function. The p…

    References

    http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng%3Ba=commit%3Bh=9dad5e37aef295b4ef8dea39392b652deebc9261
    http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
    http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063118.html
    http://marc.info/?l=bugtraq&m=133951357207000&w=2
    http://secunia.com/advisories/45046
    http://secunia.com/advisories/45405
    http://secunia.com/advisories/45492
    http://secunia.com/advisories/49660
    http://security.gentoo.org/glsa/glsa-201206-15.xml
    http://support.apple.com/kb/HT5002
    http://www.debian.org/security/2011/dsa-2287
    http://www.libpng.org/pub/png/libpng.html
    http://www.mandriva.com/security/advisories?name=MDVSA-2011:151
    http://www.openwall.com/lists/oss-security/2011/07/13/2
    http://www.securityfocus.com/bid/48660
    https://bugzilla.redhat.com/show_bug.cgi?id=720608
    https://exchange.xforce.ibmcloud.com/vulnerabilities/68537
    http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng%3Ba=commit%3Bh=9dad5e37aef295b4ef8dea39392b652deebc9261
    http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
    http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063118.html
    http://marc.info/?l=bugtraq&m=133951357207000&w=2
    http://secunia.com/advisories/45046
    http://secunia.com/advisories/45405
    http://secunia.com/advisories/45492
    http://secunia.com/advisories/49660
    http://security.gentoo.org/glsa/glsa-201206-15.xml
    http://support.apple.com/kb/HT5002
    http://www.debian.org/security/2011/dsa-2287
    http://www.libpng.org/pub/png/libpng.html
    http://www.mandriva.com/security/advisories?name=MDVSA-2011:151
    http://www.openwall.com/lists/oss-security/2011/07/13/2
    http://www.securityfocus.com/bid/48660
    https://bugzilla.redhat.com/show_bug.cgi?id=720608
    https://exchange.xforce.ibmcloud.com/vulnerabilities/68537

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High