bzip2 before 1.0.2 in FreeBSD 4.5 and earlier, OpenLinux 3.1 and 3.1.1, and possibly other operating systems, does not use the O_EXCL flag to create files during decompression and does not warn the user if an existing file would be overwritten, which could allow attackers to overwrite files via a bzip2 archive.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Bzip2 | Bzip | 0.9.0 (including) | 0.9.0 (including) |
| Bzip2 | Bzip | 0.9.0a (including) | 0.9.0a (including) |
| Bzip2 | Bzip | 0.9.0b (including) | 0.9.0b (including) |
| Bzip2 | Bzip | 0.9.0c (including) | 0.9.0c (including) |
| Bzip2 | Bzip | 0.9.5a (including) | 0.9.5a (including) |
| Bzip2 | Bzip | 0.9.5b (including) | 0.9.5b (including) |
| Bzip2 | Bzip | 0.9.5c (including) | 0.9.5c (including) |
| Bzip2 | Bzip | 0.9.5d (including) | 0.9.5d (including) |
| Bzip2 | Bzip | 1.0 (including) | 1.0 (including) |
| Bzip2 | Bzip | 1.0.1 (including) | 1.0.1 (including) |
References
- ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-039.0.txt
- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:25.bzip2.asc
- http://www.iss.net/security_center/static/9126.php
- http://www.securityfocus.com/bid/4774
- ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-039.0.txt
- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:25.bzip2.asc
- http://www.iss.net/security_center/static/9126.php
- http://www.securityfocus.com/bid/4774