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TITLE:
CGI.pm "header()" HTTP Header Injection Vulnerability

SECUNIA ADVISORY ID:
SA42461

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/42461/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=42461

RELEASE DATE:
2010-12-03

DISCUSS ADVISORY:
http://secunia.com/advisories/42461/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/42461/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=42461

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A vulnerability has been reported in CGI.pm, which can be exploited
by malicious people to conduct HTTP response splitting attacks in an
application using the library.

The vulnerability is caused due to an error in the "header()"
function when processing newline characters and can be exploited to
include arbitrary HTTP headers in a response sent to the user.

The vulnerability is reported in version 3.50.

SOLUTION:
Filter malicious characters and character sequences using a proxy.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Michal Zalewski, Max Kanat-Alexander, Yanick
Champoux Lincoln Stein, Frederic Buclin, and Mark Stosberg.

ORIGINAL ADVISORY:
http://cpansearch.perl.org/src/LDS/CGI.pm-3.50/Changes
http://www.openwall.com/lists/oss-security/2010/12/01/2
http://www.openwall.com/lists/oss-security/2010/12/01/3

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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use those supplied by the vendor.

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