| Name | CVE-2015-6837 |
| Description | The xsl_ext_function_php function in ext/xsl/xsltprocessor.c in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13, when libxml2 before 2.9.2 is used, does not consider the possibility of a NULL valuePop return value before proceeding with a free operation during initial error checking, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted XML document, a different vulnerability than CVE-2015-6838. |
| 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-341-1, DSA-3358-1 |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| php5 | source | squeeze | 5.3.3.1-7+squeeze28 | DLA-341-1 | ||
| php5 | source | wheezy | 5.4.45-0+deb7u1 | DSA-3358-1 | ||
| php5 | source | jessie | 5.6.13+dfsg-0+deb8u1 | DSA-3358-1 | ||
| php5 | source | (unstable) | 5.6.13+dfsg-1 |
https://bugs.php.net/bug.php?id=69782
https://www.openwall.com/lists/oss-security/2015/09/07/5
Fixed in 5.5.45 and 5.6.13