Integer overflow in Libgd
CVE-2016-7568
Integer overflow in the gdImageWebpCtx function in gd_webp.c in the GD Graphics Library (aka libgd) through 2.2.3, as used in PHP through 7.0.11, allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via crafted imagewebp and imagedestroy calls.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.051 (92.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.051 · newest: 0.051 · change: 0.000
Affected products
- Libgd
- PHP
- Debian Linux — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/php/php-src/commit/c18263e0e0769faee96a5d0ee04b750c442783c6 (Patch, Third Party Advisory, Issue Tracking)
- www.debian.org/security/2016/dsa-3693 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/201612-09 (vendor-advisory, Third Party Advisory)
- bugs.php.net/bug.php (Issue Tracking, Vendor Advisory)
- github.com/libgd/libgd/issues/308 (Patch, Third Party Advisory, Issue Tracking)
- github.com/libgd/libgd/commit/40bec0f38f50e8510f5bb71a82f516d46facde03 (Patch, Third Party Advisory, Issue Tracking)
- www.securityfocus.com/bid/93184 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2016-7568?
- CVE-2016-7568 is a critical-severity vulnerability in Libgd, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2016-09-28.
- How severe is CVE-2016-7568?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2016-7568 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.