CVE-2017-16931
critical
CVSS v3
9.8
CVSS v4 NEW
—
VIR risk
9.8
Description
parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name.
Predictions
Exploit likelihood
97%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2.9.4+dfsg1-3.1 |
| sid | Fixed | 2.9.4+dfsg1-3.1 |
| forky | Fixed | 2.9.4+dfsg1-3.1 |
| bullseye | Fixed | 2.9.4+dfsg1-3.1 |
| bookworm | Fixed | 2.9.4+dfsg1-3.1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| xmlsoft | libxml2 | {"endIncluding":"2.9.4"} | |
References
- http://xmlsoft.org/news.html
- https://bugzilla.gnome.org/show_bug.cgi?id=766956
- https://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3
- https://lists.debian.org/debian-lts-announce/2017/11/msg00041.html
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://www.suse.com/security/cve/CVE-2017-16931.html
- https://security-tracker.debian.org/tracker/CVE-2017-16931
CWEs
CWE-119
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.