What’s Vulnerable › Vulnerabilities
CVE-2015-4021
- Severity: medium (CVSS 5.0 v2.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 20.5% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2015-06-09 · updated 2026-06-17
- Weakness: CWE-189
Description
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.
Affected products
- macOS: through 10.10.4
- PHP: through 5.4.40; 5.4.39, 5.5.0, 5.5.0-alpha1, 5.5.0-alpha2, 5.5.0-alpha3, 5.5.0-alpha4 (+45)
- Red Hat Enterprise Linux: 6.0, 7.0
- RedHat Enterprise Linux Desktop: 7.0
- RedHat Enterprise Linux Hpc Node: 7.0
- RedHat Enterprise Linux Hpc Node Eus: 7.1
- RedHat Enterprise Linux Server: 7.0
- RedHat Enterprise Linux Server Eus: 7.1
- RedHat Enterprise Linux Workstation: 7.0
References
- 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://php.net/ChangeLog-5.php
- http://rhn.redhat.com/errata/RHSA-2015-1135.html
- http://rhn.redhat.com/errata/RHSA-2015-1186.html
- http://rhn.redhat.com/errata/RHSA-2015-1187.html
- http://rhn.redhat.com/errata/RHSA-2015-1218.html
- http://rhn.redhat.com/errata/RHSA-2015-1219.html
- http://www.debian.org/security/2015/dsa-3280
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