Buffer overflow in Apple Mac OS X
CVE-2016-4073
Multiple integer overflows in the mbfl_strcut function in ext/mbstring/libmbfl/mbfl/mbfilter.c in PHP before 5.5.34, 5.6.x before 5.6.20, and 7.x before 7.0.5 allow remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted mb_strcut call.
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: 0.071 (94.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.073 · newest: 0.071 · change: -0.002
Affected products
- Apple Mac OS X
- PHP — versions 5.5.0, 5.5.1, 5.5.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.ubuntu.com/usn/USN-2952-1 (vendor-advisory)
- www.securityfocus.com/bid/85991 (vdb-entry)
- www.php.net/ChangeLog-7.php
- security.gentoo.org/glsa/201611-22 (vendor-advisory)
- support.apple.com/HT206567
- rhn.redhat.com/errata/RHSA-2016-2750.html (vendor-advisory)
- www.debian.org/security/2016/dsa-3560 (vendor-advisory)
- www.ubuntu.com/usn/USN-2952-2 (vendor-advisory)
- lists.apple.com/archives/security-announce/2016/May/msg00004.html (vendor-advisory)
- bugs.php.net/bug.php (Exploit)
Frequently asked questions
- What is CVE-2016-4073?
- CVE-2016-4073 is a critical-severity vulnerability in Apple Mac OS X, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2016-05-20.
- How severe is CVE-2016-4073?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2016-4073 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.