CVE-2015-5523: Buffer Overflow
First published: Tue Aug 11 2015(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =15.04 | |
| Debian | =7.0 | |
| Debian | =8.0 | |
| iStyle @cosme iPhone OS | <=8.2 | |
| Apple iOS and macOS | <=10.6.8 | |
| Apple iOS, iPadOS, and watchOS | <=1.0.1 | |
| HTACG Tidy | <=4.9.30 |
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Reference Links
- 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
Frequently Asked Questions
What is the severity of CVE-2015-5523?
CVE-2015-5523 is classified as a denial of service vulnerability that can lead to a system crash.
How do I fix CVE-2015-5523?
To mitigate CVE-2015-5523, upgrade to Tidy version 4.9.31 or later, which addresses the vulnerability.
What software is affected by CVE-2015-5523?
CVE-2015-5523 affects various versions of Ubuntu, Debian, macOS, and Apple iPhone OS that utilize Tidy prior to version 4.9.31.
What kind of attack does CVE-2015-5523 enable?
CVE-2015-5523 allows remote attackers to perform a denial of service attack by triggering excessive memory allocation.
Can CVE-2015-5523 affect my web applications?
Yes, if your web applications use the vulnerable version of Tidy, they could be susceptible to exploitation through crafted inputs.
- agent/references
- agent/type
- agent/weakness
- agent/severity
- agent/author
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/first-publish-date
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/canonical
- canonical/ubuntu
- version/ubuntu/12.04
- version/ubuntu/14.04
- version/ubuntu/15.04
- vendor/debian
- canonical/debian
- version/debian/7.0
- version/debian/8.0
- vendor/apple
- canonical/istyle @cosme iphone os
- version/istyle @cosme iphone os/8.2
- canonical/apple ios and macos
- version/apple ios and macos/10.6.8
- canonical/apple ios, ipados, and watchos
- version/apple ios, ipados, and watchos/1.0.1
- vendor/htacg
- canonical/htacg tidy
- version/htacg tidy/4.9.30