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securityvulnsSecurityvulnsSECURITYVULNS:DOC:15513
HistoryDec 26, 2006 - 12:00 a.m.

[SA23492] w3m Certificate Handling Format String Vulnerability

2006-12-2600:00:00
vulners.com
16

TITLE:
w3m Certificate Handling Format String Vulnerability

SECUNIA ADVISORY ID:
SA23492

VERIFY ADVISORY:
http://secunia.com/advisories/23492/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
w3m 0.x
http://secunia.com/product/12960/

DESCRIPTION:
A vulnerability has been reported in w3m, which potentially can be
exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a format string error when
handling SSL certificates and can be exploited via a specially
crafted SSL certificate containing format specifiers in the "CN"
field.

Successful exploitation may allow execution of arbitrary code when
e.g. visiting a malicious website, but requires that the application
is running with either the "-dump" or "-backend" option.

The vulnerability is reported in version 0.5.1. Other versions may
also be affected.

SOLUTION:
Only visit trusted sites when running with the "-backend" or "-dump"
options.

PROVIDED AND/OR DISCOVERED BY:
Reported by an anonymous person.

ORIGINAL ADVISORY:
http://sourceforge.net/tracker/index.php?func=detail&aid=1612792&group_id=39518&atid=425439


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

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

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