----------------------------------------------------------------------


Q1 Factsheets released:

http://secunia.com/resources/factsheets/2011_vendor/


----------------------------------------------------------------------

TITLE:
Perl  "uc()", "lc()", "lcfirst()", and "ucfirst()" Taint Mode Bypass
Weakness

SECUNIA ADVISORY ID:
SA43921

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/43921/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=43921

RELEASE DATE:
2011-04-05

DISCUSS ADVISORY:
http://secunia.com/advisories/43921/#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/43921/

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=43921

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 weakness has been reported in Perl, which can be exploited by
malicious people to bypass certain security features.

The weakness is caused due to the "uc()", "lc()", "lcfirst()", and
"ucfist()" functions incorrectly laundering tainted data, which can
result in the unintended use of potentially malicious data after
using these functions.

The weakness is reported in version 5.12.3. Other versions may also
be affected.

SOLUTION:
Fixed in the GIT repository.

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

PROVIDED AND/OR DISCOVERED BY:
Mark Martinec

ORIGINAL ADVISORY:
Perl Bug #87336:
http://rt.perl.org/rt3/Public/Bug/Display.html?id=87336

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/

----------------------------------------------------------------------

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.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------