AbiWord Link Grammar and Link Grammar separate_sentence() buffer overflow
| abiword-linkgrammar-sentence-bo (38317) |  High Risk |
Description:
AbiWord Link Grammar and Link Grammar are vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the separate_word() function. By passing a specially-crafted sentence containing overly long words to the separate_sentence() function, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
*CVSS:
| Base Score: | 7.5 |
| Access Vector: | Network |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 5.5 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
For AbiWord Link Grammar:
Apply the patch for this vulnerability, available from the ABI SVN Repository. See References.
For other distributions:
Apply the appropriate update for your system. See References.
References:
- ABI SVN Repository: Revision 22295: /.
- AbiWord Link Grammar Web site: AbiWord Link Grammar.
- Link Grammar Web site: Link Grammar.
- Secunia Research 07/11/2007: AbiWord Link Grammar "separate_sentence()" Buffer Overflow.
- Secunia Research 07/11/2007: Link Grammar "separate_sentence()" Buffer Overflow.
- BID-26365: Link Grammar SEPARATE_WORD Function Remote Buffer Overflow Vulnerability
- CVE-2007-5395: Stack-based buffer overflow in the separate_word function in tokenize.c in Link Grammar 4.1b and possibly other versions, as used in AbiWord Link Grammar 4.2.4, allows remote attackers to execute arbitrary code via a long word, as reachable through the separate_sentence function.
- DSA-1432: link-grammar -- buffer overflow
- GLSA-200711-27: Link Grammar: User-assisted execution of arbitrary code
- SA27300: Link Grammar "separate_sentence()" Buffer Overflow
- SA27340: AbiWord Link Grammar "separate_sentence()" Buffer Overflow
- USN-545-1: link-grammar vulnerability
- VUPEN/ADV-2007-3770: Link Grammar separate_sentence() Function Buffer Overflow Vulnerability
- VUPEN/ADV-2007-3771: AbiWord Link Grammar separate_sentence() Remote Buffer Overflow
Platforms Affected:
- AbiSource AbiWord Link Grammar 4.2.4
- Canonical Ubuntu 7.10
- Davy Temperley, Daniel Sleator and John Lafferty Link Grammar 4.1b
- Debian Debian Linux 4.0
- Gentoo Linux
Reported:
Nov 07, 2007
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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.