CVE-2015-4021
MEDIUM severity · CVSS 5 · CWE-189
5CVSS MEDIUM
Summary
The phar_parse_tarfile function in ext/phar/tar.c in PHP before 5.4.41, 5.5.x before 5.5.25, and 5.6.x before 5.6.9 does not verify that the first character of a filename is different from the \0 character, which allows remote attackers to cause a denial of service (integer underflow and memory corruption) via a crafted entry in a tar archive.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges required—
User interaction—
Confidentiality impactNone
Integrity impactNone
Availability impact—
Exploit probability (EPSS)20%
AV:N/AC:L/Au:N/C:N/I:N/A:P
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: http://php.net/ChangeLog-5.php ↗
Additional information
- NVD record
- http://php.net/ChangeLog-5.phpPatch
- http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158616.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158915.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/159031.html
- http://lists.opensuse.org/opensuse-updates/2015-06/msg00002.html
- http://rhn.redhat.com/errata/RHSA-2015-1135.html
- http://rhn.redhat.com/errata/RHSA-2015-1186.html