HTML-Parser decode_entities() denial of service
| htmlparser-decodeentities-dos (53941) |  Medium Risk |
Description:
HTML-Parser is vulnerable to a denial of service, caused by the improper handling of invalid HTML entities by the decode_entities() function in utils.c. By tricking the application to process a malicious string via the affected utils.c library, a remote attacker could cause the affected application to enter into an infinite loop.
*CVSS:
| Base Score: | 4.3 |
| Access Vector: | Network |
| Access Complexity: | Medium |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Partial |
| Temporal Score: | 3.2 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Upgrade to the latest version of HTML-Parser (3.63 or later), available from the HTML Parser Web site. See References.
References:
- github Social Coding: The HTML-Parser distribution is is a collection of modules that parse and extract information from HTML documents.
- HTML Parser Web site: HTML-Parser.
- oss-security Mailing List, 23 Oct 20:59: CVE-2009-3627 assignment notification - HTML-Parser-3.63.
- SA Bugzilla ¿ Bug 6225: Invalid numerical HTML entity crashes perl .
- BID-36807: HTML-Parser Invalid HTML Entity Remote Denial of Service Vulnerability
- CVE-2009-3627: The decode_entities function in util.c in HTML-Parser before 3.63 allows context-dependent attackers to cause a denial of service (infinite loop) via an incomplete SGML numeric character reference, which triggers generation of an invalid UTF-8 character.
- DSA-1923: libhtml-parser-perl -- denial of service
- SA37155: HTML-Parser "decode_entities()" Denial of Service
- SUSE-SR:2009:020: SUSE Security Summary Report
- USN-855-1: libhtml-parser-perl vulnerability
- VUPEN/ADV-2009-3022: HTML-Parser decode_entities() Function Denial of Service Vulnerability
Platforms Affected:
- Canonical Ubuntu 6.06 LTS
- Canonical Ubuntu 8.04 LTS
- Canonical Ubuntu 8.10
- Debian Debian Linux 4.0
- Debian Debian Linux 5.0
- HTML-Parser HTML-Parser 3.54
Reported:
Oct 26, 2009
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.