CVE-2016-1960
Description
Integer underflow in the nsHtml5TreeBuilder class in the HTML5 string parser in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7 allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) by leveraging mishandling of end tags, as demonstrated by incorrect SVG processing, aka ZDI-CAN-3545.
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.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Mozilla Firefox < 45.0 - 'nsHtml5TreeBuilder' Use-After-Free (EMET 5.52 Bypass)
Firefox 44.0.2 - ASM.JS JIT-Spray Remote Code Execution
OS impact
SUSE Affected 3 releases
| Version | Status | Fixed in |
|---|---|---|
| 42.1 | Affected | — |
| 13.2 | Affected | — |
| 13.1 | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 45.0esr-1 |
| sid | Fixed | 45.0-1 |
| forky | Fixed | 45.0esr-1 |
| bullseye | Fixed | 45.0esr-1 |
| bookworm | Fixed | 45.0esr-1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| mozilla | firefox | {"endIncluding":"44.0.2"} | |
| mozilla | firefox | 38.0 | |
| mozilla | firefox | 38.0.1 | |
| mozilla | firefox | 38.0.5 | |
| mozilla | firefox | 38.1.0 | |
| mozilla | firefox | 38.1.1 | |
| mozilla | firefox | 38.2.0 | |
| mozilla | firefox | 38.2.1 | |
| mozilla | firefox | 38.3.0 | |
| mozilla | firefox | 38.4.0 | |
| mozilla | firefox | 38.5.0 | |
| mozilla | firefox | 38.5.1 | |
| mozilla | firefox | 38.6.0 | |
| mozilla | firefox | 38.6.1 | |
| mozilla | thunderbird | {"endIncluding":"38.6.0"} | |
References
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00027.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00029.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00031.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00050.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00068.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00089.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00091.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00093.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00006.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00008.html
- http://www.debian.org/security/2016/dsa-3510
- http://www.debian.org/security/2016/dsa-3520
- http://www.mozilla.org/security/announce/2016/mfsa2016-23.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- http://www.securitytracker.com/id/1035215
- http://www.ubuntu.com/usn/USN-2917-1
- http://www.ubuntu.com/usn/USN-2917-2
- http://www.ubuntu.com/usn/USN-2917-3
- http://www.ubuntu.com/usn/USN-2934-1
- http://zerodayinitiative.com/advisories/ZDI-16-198/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1246014
- https://security.gentoo.org/glsa/201605-06
- https://www.exploit-db.com/exploits/42484/
- https://www.exploit-db.com/exploits/44294/
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.