CVE-2017-9048

HIGH

libxml2 20904-GITv2.9.4-16-g0741801 - Stack-based Buffer Overflow in xmlSnprintfElementContent

Title source: llm
STIX 2.1

Description

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.

References (6)

Core 6
Core References
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2017/dsa-3952
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201711-01
Exploit, Mailing List, Patch, Third Party Advisory x_refsource_misc
http://www.openwall.com/lists/oss-security/2017/05/15/1
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/98556

Scores

CVSS v3 7.5
EPSS 0.0489
EPSS Percentile 91.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-119
Status published
Products (1)
xmlsoft/libxml2 2.9.4
Published May 18, 2017
Tracked Since Feb 18, 2026