CVE-2015-5523
medium
CVSS v3
—
CVSS v4 NEW
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VIR risk
4.3
Description
The ParseValue function in lexer.c in tidy before 4.9.31 allows remote attackers to cause a denial of service (crash) via vectors involving multiple whitespace characters before an empty href, which triggers a large memory allocation.
Predictions
Exploit likelihood
20%
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
| OS | Version | Status | Fixed in |
|---|---|---|---|
| ubuntu | 12.04 | affected | |
| ubuntu | 14.04 | affected | |
| ubuntu | 15.04 | affected | |
| debian | 7.0 | affected | |
| debian | 8.0 | affected | |
| macos | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| htacg | tidy | {"endIncluding":"4.9.30"} | |
References
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00001.html
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00005.html
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html
- http://www.debian.org/security/2015/dsa-3309
- http://www.openwall.com/lists/oss-security/2015/06/04/2
- http://www.openwall.com/lists/oss-security/2015/07/13/7
- http://www.openwall.com/lists/oss-security/2015/07/15/3
- http://www.securityfocus.com/bid/75037
- http://www.securitytracker.com/id/1033703
- http://www.ubuntu.com/usn/USN-2695-1
- https://github.com/htacg/tidy-html5/issues/217#issuecomment-108565501
- https://support.apple.com/HT205212
- https://support.apple.com/HT205213
- https://support.apple.com/HT205267
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00001.html
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00005.html
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html
- http://www.debian.org/security/2015/dsa-3309
- http://www.openwall.com/lists/oss-security/2015/06/04/2
- http://www.openwall.com/lists/oss-security/2015/07/13/7
- http://www.openwall.com/lists/oss-security/2015/07/15/3
- http://www.securityfocus.com/bid/75037
- http://www.securitytracker.com/id/1033703
- http://www.ubuntu.com/usn/USN-2695-1
- https://github.com/htacg/tidy-html5/issues/217#issuecomment-108565501
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.