A NULL pointer dereference vulnerability exists in the xpath.c:xmlXPathCompOpEval() function of libxml2 through 2.9.8 when parsing an invalid XPath expression in the XPATH_OP_AND or XPATH_OP_OR case. Applications processing untrusted XSL format inputs with the use of the libxml2 library may be vulnerable to a denial of service attack due to a crash of the application.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
Name | Vendor | Start Version | End Version |
---|---|---|---|
Ubuntu_linux | Canonical | 16.04 | 16.04 |
Ubuntu_linux | Canonical | 14.04 | 14.04 |
Ubuntu_linux | Canonical | 12.04 | 12.04 |
Ubuntu_linux | Canonical | 18.04 | 18.04 |
Debian_linux | Debian | - | - |