SB2025102413 - Denial of service in libxml2
Published: October 24, 2025
Security Bulletin ID
SB2025102413
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Infinite loop (CVE-ID: CVE-2025-8732)
CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
CVSSv4: CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop within the xmlParseSGMLCatalog() function in catalog.c when parsing untrusted SGML catalogs. A remote attacker can trick the victim into passing a specially crafted SGML catalogs to the application and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://drive.google.com/file/d/1woIeYVcSQB_NwfEhaVnX6MedpWJ_nqWl/view?usp=drive_link
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/958
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/958#note_2505853
- https://vuldb.com/?ctiid.319228
- https://vuldb.com/?id.319228
- https://vuldb.com/?submit.622285
- https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/337/diffs?commit_id=a01168d3e06a1fa96733c939dbcfa5f5b5f77288