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TITLE:
Pidgin Multiple NULL Pointer Dereference Weaknesses

SECUNIA ADVISORY ID:
SA41893

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/41893/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=41893

RELEASE DATE:
2010-10-22

DISCUSS ADVISORY:
http://secunia.com/advisories/41893/#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/41893/

ONLY AVAILABLE IN CUSTOMER AREA:
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 * Report Reliability
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https://ca.secunia.com/?page=viewadvisory&vuln_id=41893

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:
Multiple weaknesses have been reported in Pidgin, which can be
exploited by malicious people to cause a DoS (Denial of Service).

The weaknesses are caused due to a missing validation of the return
value from the "purple_base64_decode()" function in the Yahoo!, MSN,
MySpaceIM, and XMPP protocol plugins and the NTLM authentication
support. This can be exploited to cause a NULL pointer dereference
error and crash the process via specially crafted Base64 encoded
messages.

The weaknesses are reported in versions prior to 2.7.4.

SOLUTION:
Update to version 2.7.4.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Daniel Atallah.

ORIGINAL ADVISORY:
http://www.pidgin.im/news/security/?id=48

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:
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