A vulnerability was found in bzip2 up to 1.0.1. It has been classified as critical. This affects an unknown code of the component Decompression Handler. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on integrity. The summary by CVE is:

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.

The weakness was published 08/12/2002 (Website). The advisory is shared at ftp.freebsd.org. This vulnerability is uniquely identified as CVE-2002-0759. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (9126) and SecurityFocus (BID 4774†). Similar entries are available at VDB-18646 and VDB-18647.

Productinfo

Name

• bzip2

Version

• 0.9.0
• 0.9.0a
• 0.9.0b
• 0.9.0c
• 0.9.5a
• 0.9.5b
• 0.9.5c
• 0.9.5d
• 1.0
• 1.0.1

CPE 2.3info

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CPE 2.2info

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