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TITLE:
cURL/libcURL "Location:" Redirect URLs Security Bypass

SECUNIA ADVISORY ID:
SA34138

VERIFY ADVISORY:
http://secunia.com/advisories/34138/

DESCRIPTION:
A security issue has been reported in cURL/libcURL, which can be
exploited by malicious people to bypass certain security
restrictions.

The security issue is caused due to cURL following HTTP "Location:"
redirects to e.g. "scp://" or "file://" URLs, which can be exploited
by a malicious HTTP server to overwrite or disclose the content of
arbitrary local files and potentially execute arbitrary commands via
specially crafted redirect URLs.

Successful exploitation requires that automatic redirection following
is enabled.

The security issue is reported in versions 5.11 through 7.19.3.

SOLUTION:
Update to version 7.19.4 or apply patches.

Patch for current CVS HEAD:
http://curl.haxx.se/CVE-2009-0037/curl-CVSHEAD-CVE-2009-0037.patch

Patch for curl 7.19.0:
http://curl.haxx.se/CVE-2009-0037/curl-7.19.0-CVE-2009-0037.patch

Patch for curl 7.18.2:
http://curl.haxx.se/CVE-2009-0037/curl-7.18.2-CVE-2009-0037.patch

Patch for curl 7.18.1:
http://curl.haxx.se/CVE-2009-0037/curl-7.18.1-CVE-2009-0037.patch

Patch for curl 7.16.4:
http://curl.haxx.se/CVE-2009-0037/curl-7.16.4-CVE-2009-0037.patch

Patch for curl 7.15.1:
http://curl.haxx.se/CVE-2009-0037/curl-7.15.1-CVE-2009-0037.patch

Patch for curl 7.11.0:
http://curl.haxx.se/CVE-2009-0037/curl-7.11.0-CVE-2009-0037.patch

PROVIDED AND/OR DISCOVERED BY:
David Kierznowski

CHANGELOG:
2009-03-03: Added link to "Original Advisory" section.

ORIGINAL ADVISORY:
cURL:
http://curl.haxx.se/docs/adv_20090303.html

David Kierznowski:
http://www.withdk.com/2009/03/03/curllibcurl-redirect-arbitrary-file-access/

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