Buffer overflow in PHP
CVE-2016-2554
Stack-based buffer overflow in ext/phar/tar.c in PHP before 5.5.32, 5.6.x before 5.6.18, and 7.x before 7.0.3 allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted TAR archive.
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: 0.110 (95.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.110 · newest: 0.110 · change: 0.000
Affected products
- PHP — versions 7.0.0, 7.0.1, 7.0.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.ubuntu.com/usn/USN-2952-1 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00058.html (vendor-advisory)
- rhn.redhat.com/errata/RHSA-2016-2750.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00056.html (vendor-advisory)
- www.ubuntu.com/usn/USN-2952-2 (vendor-advisory)
- php.net/ChangeLog-5.php
- bugs.php.net/bug.php (Exploit)
- php.net/ChangeLog-7.php
- h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00052.html (vendor-advisory)
Frequently asked questions
- What is CVE-2016-2554?
- CVE-2016-2554 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 2016-05-16.
- How severe is CVE-2016-2554?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2016-2554 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.