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USN-5359-1: rsync vulnerability

31 March 2022

rsync could be made to crash or run programs if it received specially crafted network traffic.

Releases

Packages

  • rsync - fast, versatile, remote (and local) file-copying tool

Details

Danilo Ramos discovered that rsync incorrectly handled memory when
performing certain zlib deflating operations. An attacker could use this
issue to cause rsync to crash, resulting in a denial of service, or
possibly execute arbitrary code.

Update instructions

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

Ubuntu 20.04
Ubuntu 18.04

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

References

Related notices

  • USN-5355-1: libx32z1-dev, lib64z1, libx32z1, zlib, zlib1g-dev, lib32z1-dev, lib64z1-dev, zlib1g, lib32z1
  • USN-5355-2: libx32z1-dev, lib64z1, zlib-bin, libx32z1, zlib, zlib1g-dev, lib32z1-dev, lib64z1-dev, zlib1g, lib32z1
  • USN-5359-2: rsync