Joined: 13 Jun 2003
Location: Barcelona, Spain
|Posted: Tue Apr 27, 2004 7:30 am Post subject: [ GLSA 200404-18 ] Multiple Vulnerabilities in ssmtp
|Gentoo Linux Security Advisory
Title: Multiple Vulnerabilities in ssmtp (GLSA 200404-18)
Exploitable: remote root
Date: April 26, 2004
Bug(s): #47918, #48435
There are multiple format string vulnerabilities in the SSMTP package, which may allow an attacker to run arbitrary code with ssmtp's privileges (potentially root).
SSMTP is a very simple mail transfer agent (MTA) that relays mail from the local machine to another SMTP host. It is not designed to function as a full mail server; its sole purpose is to relay mail.
Vulnerable: <= 2.60.4-r2
Unaffected: >= 2.60.7
Architectures: All supported architectures
There are two format string vulnerabilities inside the log_event() and die() functions of ssmtp. Strings from outside ssmtp are passed to various printf()-like functions from within log_event() and die() as format strings. An attacker could cause a specially-crafted string to be passed to these functions, and potentially cause ssmtp to execute arbitrary code.
If ssmtp connects to a malicious mail relay server, this vulnerability can be used to execute code with the rights of the mail sender, including root.
There is no known workaround at this time. All users are advised to upgrade to the latest available version of ssmtp.
All users are advised to upgrade to the latest available version of ssmtp.
|# emerge sync
# emerge -pv ">=mail-mta/ssmtp-2.60.7"
# emerge ">=mail-mta/ssmtp-2.60.7"
Last edited by GLSA on Sun May 07, 2006 4:50 pm; edited 1 time in total