Vulnerability Monitor

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CVE-2015-5523

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.

Published

2015-08-11T14:59:15.430

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 4.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	canonical	ubuntu_linux	12.04	Yes
Operating System	canonical	ubuntu_linux	14.04	Yes
Operating System	canonical	ubuntu_linux	15.04	Yes
Operating System	debian	debian_linux	7.0	Yes
Operating System	debian	debian_linux	8.0	Yes
Operating System	apple	iphone_os	≤ 8.2	Yes
Operating System	apple	mac_os_x	≤ 10.6.8	Yes
Operating System	apple	watchos	≤ 1.0.1	Yes
Application	htacg	tidy	≤ 4.9.30	Yes

References

http://lists.apple.com/archives/security-announce/2015/Sep/msg00001.html Mailing List, Third Party Advisory ([email protected])
http://lists.apple.com/archives/security-announce/2015/Sep/msg00005.html Mailing List, Third Party Advisory ([email protected])
http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html Mailing List, Third Party Advisory ([email protected])
http://www.debian.org/security/2015/dsa-3309 Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2015/06/04/2 Exploit ([email protected])
http://www.openwall.com/lists/oss-security/2015/07/13/7 Exploit ([email protected])
http://www.openwall.com/lists/oss-security/2015/07/15/3 ([email protected])
http://www.securityfocus.com/bid/75037 ([email protected])
http://www.securitytracker.com/id/1033703 ([email protected])
http://www.ubuntu.com/usn/USN-2695-1 Third Party Advisory ([email protected])
https://github.com/htacg/tidy-html5/issues/217#issuecomment-108565501 Exploit ([email protected])
https://support.apple.com/HT205212 Third Party Advisory ([email protected])
https://support.apple.com/HT205213 Third Party Advisory ([email protected])
https://support.apple.com/HT205267 Third Party Advisory ([email protected])
http://lists.apple.com/archives/security-announce/2015/Sep/msg00001.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.apple.com/archives/security-announce/2015/Sep/msg00005.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2015/dsa-3309 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/06/04/2 Exploit (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/07/13/7 Exploit (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/07/15/3 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/75037 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1033703 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2695-1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/htacg/tidy-html5/issues/217#issuecomment-108565501 Exploit (af854a3a-2127-422b-91ae-364da2661108)
https://support.apple.com/HT205212 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://support.apple.com/HT205213 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://support.apple.com/HT205267 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)