[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
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
- 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.
The problem can be corrected by updating your system to the following
Ubuntu 18.04 LTS:
In general, a standard system update will make all the necessary changes.
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