CVE-2016-3705
Description
The (1) xmlParserEntityCheck and (2) xmlParseAttValueComplex functions in parser.c in libxml2 2.9.3 do not properly keep track of the recursion depth, which allows context-dependent attackers to cause a denial of service (stack consumption and application crash) via a crafted XML document containing a large number of nested entity references.
Predictions
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
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 2.9.3+dfsg1-1.1 |
| debian | bullseye | fixed | 2.9.3+dfsg1-1.1 |
| debian | forky | fixed | 2.9.3+dfsg1-1.1 |
| debian | sid | fixed | 2.9.3+dfsg1-1.1 |
| debian | trixie | fixed | 2.9.3+dfsg1-1.1 |
| ubuntu | 12.04 | affected | |
| ubuntu | 14.04 | affected | |
| ubuntu | 15.10 | affected | |
| ubuntu | 16.04 | affected | |
| debian | 8.0 | affected | |
| suse | 42.1 | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| xmlsoft | libxml2 | 2.9.3 | |
| hp | icewall_federation_agent | 3.0 | |
| hp | icewall_file_manager | 3.0 | |
References
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00055.html
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00127.html
- http://rhn.redhat.com/errata/RHSA-2016-2957.html
- http://seclists.org/fulldisclosure/2016/May/10
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.securityfocus.com/bid/89854
- http://www.ubuntu.com/usn/USN-2994-1
- https://access.redhat.com/errata/RHSA-2016:1292
- https://bugzilla.gnome.org/show_bug.cgi?id=765207
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05157239
- https://kc.mcafee.com/corporate/index?page=content&id=SB10170
- https://security.gentoo.org/glsa/201701-37
- https://www.debian.org/security/2016/dsa-3593
- https://www.tenable.com/security/tns-2016-18
- https://security-tracker.debian.org/tracker/CVE-2016-3705
CWEs
CWE-20
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.