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Insecure Library Loading
Moderately critical

cURL "Content-Disposition" Header Filename Parsing Vulnerability

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Release Date:  2010-10-14    Views:  3,950

Secunia Advisory SA39532

Where:

From remote

Impact:

System access

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


A vulnerability has been reported in cURL, which can be exploited by malicious people to compromise a user's system.

The vulnerability is caused by an error in the "parse_filename()" function within src/main.c when stripping directory separators from the "Content-Disposition" HTTP header and can be exploited to overwrite files via a specially crafted server response.

Successful exploitation requires cURL to be invoked with the "-J/--remote-header-name" option on platforms which support the backslash ("\") directory separator (e.g. Windows, Netware, MSDOS, OS/2, and Symbian).

NOTE: The "libcurl" library is not affected.

The vulnerability is reported in versions 7.20.0 through 7.21.1.


Solution:
Update to version 7.21.2.

Provided and/or discovered by:
The vendor credits Dan Fandrich.

Original Advisory:
http://curl.haxx.se/docs/adv_20101013.html

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: cURL "Content-Disposition" Header Filename Parsing Vulnerability

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