[USN-1131-1] Postfix vulnerability
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Ubuntu Security Notice USN-1131-1
May 11, 2011
postfix vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS
- Ubuntu 6.06 LTS
Summary:
An attacker could send crafted input to Postfix and cause it to crash or
run programs.
Software Description:
- postfix: High-performance mail transport agent
Details:
Thomas Jarosch discovered that Postfix incorrectly handled authentication
mechanisms other than PLAIN and LOGIN when the Cyrus SASL library is used.
A remote attacker could use this to cause Postfix to crash, leading to a
denial of service, or possibly execute arbitrary code as the postfix user.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 11.04:
postfix 2.8.2-1ubuntu2.1
Ubuntu 10.10:
postfix 2.7.1-1ubuntu0.2
Ubuntu 10.04 LTS:
postfix 2.7.0-1ubuntu0.2
Ubuntu 8.04 LTS:
postfix 2.5.1-2ubuntu1.4
Ubuntu 6.06 LTS:
postfix 2.2.10-1ubuntu0.4
In general, a standard system update will make all the necessary changes.
References:
CVE-2011-1720
Package Information:
https://launchpad.net/ubuntu/+source/postfix/2.8.2-1ubuntu2.1
https://launchpad.net/ubuntu/+source/postfix/2.7.1-1ubuntu0.2
https://launchpad.net/ubuntu/+source/postfix/2.7.0-1ubuntu0.2
https://launchpad.net/ubuntu/+source/postfix/2.5.1-2ubuntu1.4
https://launchpad.net/ubuntu/+source/postfix/2.2.10-1ubuntu0.4
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