UnRAR password-protected archive buffer overflow
| unrar-password-archive-bo (32357) |  High Risk |
Description:
UnRAR is vulnerable to a stack-based buffer overflow, caused by improper bounds checking in the command line utility. By persuading a victim to open a specially-crafted password-protected archive, a remote attacker could overflow a buffer and execute arbitrary code on the system with the privileges of the victim, once the victim enters a password. An attacker could exploit this vulnerability by sending the malicious archive to a victim as an email attachment or by hosting it on a Web site.
Note: This vulnerability does not affect the Windows GUI-based version of UnRAR.
Platforms Affected:
- Eugene Roshal, UnRAR prior to 3.70 beta
- Gentoo, Linux
Remedy:
Upgrade to the latest version of UnRAR (3.70 beta or later), available from the UnRAR Web page. See References.
For Gentoo Linux:
Refer to GLSA 200702-04 for patch, upgrade, or suggested workaround information. See References.
Consequences:
Gain Access
References:
- iDefense Labs PUBLIC ADVISORY: 02.07.07, RARLabs Unrar Password Prompt Buffer Overflow Vulnerability at http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=472.
- UnRAR Web page, UnRAR at http://www.rarlab.com/.
- BID-22447: RARLAB Unrar Password Protected Archives Buffer Overflow Vulnerability
- CVE-2007-0855: Stack-based buffer overflow in RARLabs Unrar, as packaged in WinRAR and possibly other products, allows user-assisted remote attackers to execute arbitrary code via a crafted, password-protected archive.
- GLSA-200702-04: RAR, UnRAR: Buffer overflow
- SA24077: RARLabs UnRAR Password Prompt Buffer Overflow Vulnerability
- SECTRACK ID: 1017593: UnRAR Stack Overflow in Processing Password Protected Archives Lets Remote Users Execute Arbitrary Code
- SUSE-SR:2007:005: SUSE Security Summary Report
- VUPEN/ADV-2007-0523: RARLabs unRAR Password Prompt Handling Client-Side Buffer Overflow Vulnerability
Reported:
Feb 07, 2007
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