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Gentoo Linux Security Advisory GLSA 200404-18 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: Multiple Vulnerabilities in ssmtp |
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Date: April 26, 2004 |
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Bugs: #47918, #48435 |
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ID: 200404-18 |
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Synopsis |
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======== |
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|
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There are multiple format string vulnerabilities in the SSMTP package, |
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which may allow an attacker to run arbitrary code with ssmtp's |
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privileges (potentially root). |
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|
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Background |
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========== |
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|
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SSMTP is a very simple mail transfer agent (MTA) that relays mail from |
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the local machine to another SMTP host. It is not designed to function |
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as a full mail server; its sole purpose is to relay mail. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 net-mail/ssmtp <= 2.60.4-r2 >= 2.60.7 |
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|
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Description |
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=========== |
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|
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There are two format string vulnerabilities inside the log_event() and |
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die() functions of ssmtp. Strings from outside ssmtp are passed to |
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various printf()-like functions from within log_event() and die() as |
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format strings. An attacker could cause a specially-crafted string to |
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be passed to these functions, and potentially cause ssmtp to execute |
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arbitrary code. |
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|
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Impact |
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====== |
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|
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If ssmtp connects to a malicious mail relay server, this vulnerability |
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can be used to execute code with the rights of the mail sender, |
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including root. |
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Workaround |
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========== |
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There is no known workaround at this time. All users are advised to |
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upgrade to the latest available version of ssmtp. |
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Resolution |
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========== |
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All users are advised to upgrade to the latest available version of |
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ssmtp. |
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# emerge sync |
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# emerge -pv ">=net-mail/ssmtp-2.60.7" |
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# emerge ">=net-mail/ssmtp-2.60.7" |
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|
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References |
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========== |
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[ 1 ] Secunia Advisory |
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http://secunia.com/advisories/11378/ |
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[ 2 ] CVE Reference |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0156 |
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[ 3 ] Debian Advisory |
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http://lists.debian.org/debian-security-announce/debian-security-announce-2004/msg00084.html |
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|
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-200404-18.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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|
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License |
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======= |
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Copyright 2004 Gentoo Technologies, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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http://creativecommons.org/licenses/by-sa/1.0 |
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