Buffer overflow in PHP
CVE-2016-6291
The exif_process_IFD_in_MAKERNOTE function in ext/exif/exif.c in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9 allows remote attackers to cause a denial of service (out-of-bounds array access and memory corruption), obtain sensitive information from process memory, or possibly have unspecified other impact via a crafted JPEG image.
Vulnerability class: Buffer 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: 0.056 (92.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.056 · newest: 0.056 · change: 0.000
Affected products
- PHP — versions 5.6.0, 5.6.1, 5.6.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- git.php.net/
- lists.apple.com/archives/security-announce/2016/Sep/msg00006.html (vendor-advisory)
- security.gentoo.org/glsa/201611-22 (vendor-advisory)
- rhn.redhat.com/errata/RHSA-2016-2750.html (vendor-advisory)
- php.net/ChangeLog-5.php (Release Notes)
- bugs.php.net/72603 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- www.securityfocus.com/bid/92073 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1036430 (vdb-entry)
- www.debian.org/security/2016/dsa-3631 (vendor-advisory)
- php.net/ChangeLog-7.php (Release Notes)
Frequently asked questions
- What is CVE-2016-6291?
- CVE-2016-6291 is a critical-severity vulnerability in PHP, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2016-07-25.
- How severe is CVE-2016-6291?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2016-6291 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.