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Stack-based Buffer Overflow Affecting libxml2 package, versions *

Severity

 Recommended
low

Based on CentOS security rating.

Threat Intelligence

EPSS
0.29% (70th percentile)

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  • Snyk IDSNYK-CENTOS7-LIBXML2-1986276
  • published26 Jul 2021
  • disclosed15 May 2017
Report a new vulnerability Found a mistake?

Introduced: 15 May 2017

CVE-2017-9048  (opens in a new tab)
CWE-121  (opens in a new tab)

How to fix?

There is no fixed version for Centos:7 libxml2.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxml2 package and not the libxml2 package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a stack-based buffer overflow. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer 'buf' of size 'size'. At the end of the routine, the function may strcat two more characters without checking whether the current strlen(buf) + 2 < size. This vulnerability causes programs that use libxml2, such as PHP, to crash.