Servers and applications
CVE-2017-9048
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…
- Severity
- High 7.5
- Published
- 18 May 2017
- Last changed
- 14 Oct 2026
- Added to UpHeron
- 1 Nov 2026
- Exploit chance
- 4.8% in the next 30 daysHigher than 92% of CVEs. EPSS by FIRST, 11 Nov 2026
- Weakness
- Memory buffer errors (CWE-119)
- Attack
- Over the network · No login needed · No user action needed
- Attacker can
- Take it down
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Sources
- NVD
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.
Affected software
| Software | Affected versions |
|---|---|
libxml2Servers and applications · cpe:a:xmlsoft:libxml2 |
|