wvWare LFO and LVL count integer overflow
| wvware-lfo-lvl-overflow (29833) |  High Risk |
Description:
The wvWare LFO and LVL counters are vulnerable to an integer overflow in the wvGetLFO_records and wvGetLFO_PLF functions, caused by improper handling of data from a malformed Word document. If a remote attacker could persuade a victim to open a specially-crafted Microsoft Word document with an application that utilizes the WV library, the attacker could overflow a buffer and execute arbitrary code on the victim's system.
Platforms Affected:
- Canonical, Ubuntu 6.10
- Debian, Debian Linux 3.1
- Gentoo, Linux
- MandrakeSoft, Mandrake Linux 2006
- MandrakeSoft, Mandrake Linux 2006 X86_64
- MandrakeSoft, Mandrake Linux 2007
- MandrakeSoft, Mandrake Linux 2007 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 3.0
- SourceForge, wvWare 1.2.2 and prior
Remedy:
Upgrade to the latest version of vwWare (1.2.3 or later), available from the SourceForge.net Web site. See References.
For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 200612-01 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for patch or upgrade information.
Consequences:
Gain Access
References:
- iDefense Labs PUBLIC ADVISORY: 10.26.06, Multiple Vendor wvWare LFO Count Integer Overflow Vulnerability at http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=434.
- iDefense Labs PUBLIC ADVISORY: 10.26.06, Multiple Vendor wvWare LVL Count Integer Overflow Vulnerability at http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=433.
- SourceForge.net, wvWare at http://wvware.sourceforge.net/#download.
- BID-20761: wvWare Multiple Integer Overflow Vulnerabilities
- CVE-2006-4513: Multiple integer overflows in the WV library in wvWare (formerly mswordview) before 1.2.3, as used by AbiWord, KWord, and possibly other products, allow user-assisted remote attackers to execute arbitrary code via a crafted Microsoft Word (DOC) file that produces (1) large LFO clfolvl values in the wvGetLFO_records function or (2) a large LFO nolfo value in the wvGetFLO_PLF function.
- FrSIRT/ADV-2006-4221: wvWare Document Handling Multiple Client-Side Integer Overflow Vulnerabilities
- GLSA-200612-01: wv library: Multiple integer overflows
- MDKSA-2006:202: Updated wv packages fix vulnerabilities
- SA22595: wvWare Multiple Integer Overflow Vulnerabilities
- SECTRACK ID: 1017126: wvWare Integer Overflows in wvGetLFO_PLF() and wvGetLFO_records() Let Remote Users Execute Arbitrary Code
- SUSE-SR:2006:028: SUSE Security Summary Report
- USN-374-1: wvWare vulnerability
Reported:
Oct 26, 2006
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