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Ubuntu Security Notice USN-4730-1

Ubuntu Security Notice USN-4730-1
Posted Feb 11, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4730-1 - 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.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2020-35573
MD5 | bdc88a3e5e210b788edf6e34417e8069

Ubuntu Security Notice USN-4730-1

Change Mirror Download
=========================================================================
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

Summary:

PostSRSd could be made to crash if it received specially crafted
input.

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

Details:

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.

References:
https://usn.ubuntu.com/4730-1
CVE-2020-35573

Package Information:
https://launchpad.net/ubuntu/+source/postsrsd/1.4-1ubuntu0.1
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