[SA17028] Weex "log_flush()" Format String Vulnerability

2005-10-04T00:00:00
ID SECURITYVULNS:DOC:9856
Type securityvulns
Reporter Securityvulns
Modified 2005-10-04T00:00:00

Description

TITLE: Weex "log_flush()" Format String Vulnerability

SECUNIA ADVISORY ID: SA17028

VERIFY ADVISORY: http://secunia.com/advisories/17028/

CRITICAL: Less critical

IMPACT: DoS, System access

WHERE: >From local network

SOFTWARE: Weex 2.x http://secunia.com/product/5791/

DESCRIPTION: Emanuel Haupt has reported a vulnerability in Weex, which potentially can be exploited by malicious users to cause a DoS (Denial of Service) or to compromise a vulnerable system.

The vulnerability is caused due to a format string error in the "log_flush()" function when flushing an error log entry that contains format string specifiers to disk. This may be exploited to execute arbitrary code on a user's system via a directory name containing format string specifiers.

Successful exploitation requires that the attacker is able to create directories within the user's Weex home directory.

The vulnerability has been reported in version 2.6.1.5. Other versions may also be affected.

SOLUTION: Restrict use to trusted servers only.

PROVIDED AND/OR DISCOVERED BY: Emanuel Haupt

ORIGINAL ADVISORY: http://www.freebsd.org/cgi/query-pr.cgi?pr=ports/86833


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.