[USN-4730-1] PostSRSd vulnerability

Paulo Flabiano Smorigo pfsmorigo at canonical.com
Wed Feb 10 23:26:19 UTC 2021

Ubuntu Security Notice USN-4730-1
February 10, 2021

postsrsd vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS


PostSRSd could be made to crash if it received specially crafted

Software Description:
- postsrsd: Sender Rewriting Scheme via TCP-based lookup tables for Postfix


It was discovered that PostSRSd mishandled certain input. A remote attacker
could use this vulnerability to cause a denial of service via a long timestamp
tag in an SRS address.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
  postsrsd                        1.4-1ubuntu0.1

In general, a standard system update will make all the necessary changes.


Package Information:
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