A vulnerability was found in curl 7.20.0/7.20.1/7.21.1 (Network Utility Software). It has been declared as critical. Affected by this vulnerability is some unknown functionality. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect integrity, and availability. The summary by CVE is:

Absolute path traversal vulnerability in curl 7.20.0 through 7.21.1, when the --remote-header-name or -J option is used, allows remote servers to create or overwrite arbitrary files by using \ (backslash) as a separator of path components within the Content-disposition HTTP header.

The weakness was disclosed 10/27/2010 (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is known as CVE-2010-3842 since 10/08/2010. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Applying a patch is able to eliminate this problem.

Productinfo

Type

• Network Utility Software

Name

• curl

Version

• 7.20.0
• 7.20.1
• 7.21.1

License

• open-source

CPE 2.3info

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CPE 2.2info

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