| Name | CVE-2015-4021 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-307-1, DSA-3280-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| php5 (PTS) | jessie, jessie (lts) | 5.6.40+dfsg-0+deb8u21 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://bugs.php.net/bug.php?id=69453
https://git.php.net/?p=php-src.git;a=commit;h=c27f012b7a447e59d4a704688971cbfa7dddaa74
https://www.openwall.com/lists/oss-security/2015/05/17/2 and https://www.openwall.com/lists/oss-security/2015/05/18/2
Fixed upstream in 5.4.41, 5.5.25, 5.6.9