Vulnerability CVE-2015-5523
Published: 2015-08-11

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.

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Htacg -> TIDY 
Debian -> Debian linux 
Canonical -> Ubuntu linux 
Apple -> Iphone os 
Apple -> Mac os x 
Apple -> Watchos 

 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
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