cURL: Arbitrary file access — GLSA 200903-21

A vulnerability in cURL may allow for arbitrary file access.

Affected Packages

net-misc/curl on all architectures
Affected versions < 7.19.4
Unaffected versions >= 7.19.4

Background

cURL is a command line tool for transferring files with URL syntax, supporting numerous protocols.

Description

David Kierznowski reported that the redirect implementation accepts arbitrary Location values when CURLOPT_FOLLOWLOCATION is enabled.

Impact

A remote attacker could possibly exploit this vulnerability to make remote HTTP servers trigger arbitrary requests to intranet servers and read or overwrite arbitrary files via a redirect to a file: URL, or, if the libssh2 USE flag is enabled, execute arbitrary commands via a redirect to an scp: URL.

Workaround

There is no known workaround at this time.

Resolution

All cURL users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-misc/curl-7.19.4"

References

Release Date
March 09, 2009

Latest Revision
March 09, 2009: 01

Severity
normal

Exploitable
remote

Bugzilla entries