Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Canonical | Ubuntu Linux | 12.04 |
| Debian | Debian Linux | 7.0 |
| Apple | Iphone Os | <= 8.2 |
| Apple | Mac Os X | <= 10.6.8 |
| Apple | Watchos | <= 1.0.1 |
| Htacg | Tidy | <= 4.9.30 |
Related Weaknesses (CWE)
References
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00001.htmlMailing ListThird Party Advisory
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00005.htmlMailing ListThird Party Advisory
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.htmlMailing ListThird Party Advisory
- http://www.debian.org/security/2015/dsa-3309Third Party Advisory
- http://www.openwall.com/lists/oss-security/2015/06/04/2Exploit
- http://www.openwall.com/lists/oss-security/2015/07/13/7Exploit
- 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-2695-1Third Party Advisory
- https://github.com/htacg/tidy-html5/issues/217#issuecomment-108565501Exploit
- https://support.apple.com/HT205212Third Party Advisory
- https://support.apple.com/HT205213Third Party Advisory
- https://support.apple.com/HT205267Third Party Advisory
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00001.htmlMailing ListThird Party Advisory
FAQ
What is CVE-2015-5523?
CVE-2015-5523 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 t...
How severe is CVE-2015-5523?
CVE-2015-5523 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-5523?
Check the references section above for vendor advisories and patch information. Affected products include: Canonical Ubuntu Linux, Debian Debian Linux, Apple Iphone Os, Apple Mac Os X, Apple Watchos.