ProFTPD mod_tls Buffer Overflow Vulnerability - Advisories

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ProFTPD mod_tls Buffer Overflow Vulnerability

Secunia Advisory:	SA23141
Release Date:	2006-11-28
Last Update:	2006-12-13

Critical:	Moderately critical
Impact:	DoS System access
Where:	From remote
Solution Status:	Vendor Patch

Software:	ProFTPD 1.2.x ProFTPD 1.3.x

CVE reference:	CVE-2006-6170 (Secunia mirror)

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Description: Evgeny Legerov has reported a vulnerability in the mod_tls module for ProFTPD, which potentially can be exploited by malicious people to compromise a vulnerable system. The vulnerability is caused due to a boundary error within the "tls_x509_name_oneline()" function in contrib/mod_tls.c. This can be exploited to cause a buffer overflow by sending specially crafted data to a server. Successful exploitation may allow execution of arbitrary code, but requires that ProFTPD uses the mod_tls module. The vulnerability is reported in version 1.3.0a. Other versions may also be affected. Solution: Fixed in version 1.3.1rc1. Provided and/or discovered by: Evgeny Legerov Changelog: 2006-12-01: Added CVE reference. 2006-12-13: Updated "solution" section. Added link to ProFTPD bug #2860. Original Advisory: http://lists.grok.org.uk/pipermail/full-disclosure/2006-November/050935.html Other References: ProFTPD bug #2860: http://bugs.proftpd.org/show_bug.cgi?id=2860



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise. Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

10 Related Secunia Security Advisories

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8. ProFTPD ASCII File Translation Off-By-One Vulnerability

9. ProFTPD ASCII Mode File Transfer Buffer Overflow Vulnerability

10. ProFTPD mod_sql SQL Injection

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