==========================================================================
Ubuntu Security Notice USN-7206-2
January 16, 2025

rsync regression
==========================================================================

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

- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

USN-7206-1 caused some regression in rsync.

Software Description:
- rsync: fast, versatile, remote (and local) file-copying tool

Details:

USN-7206-1 fixed vulnerabilities in rsync. The update introduced a
regression in rsync. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

 Simon Scannell, Pedro Gallegos, and Jasiel Spelman discovered that rsync
 did not properly handle checksum lengths. An attacker could use this
 issue to execute arbitrary code. (CVE-2024-12084)

 Simon Scannell, Pedro Gallegos, and Jasiel Spelman discovered that rsync
 compared checksums with uninitialized memory. An attacker could exploit
 this issue to leak sensitive information. (CVE-2024-12085)

 Simon Scannell, Pedro Gallegos, and Jasiel Spelman discovered that rsync
 incorrectly handled file checksums. A malicious server could use this
 to expose arbitrary client files. (CVE-2024-12086)

 Simon Scannell, Pedro Gallegos, and Jasiel Spelman discovered that rsync
 mishandled symlinks for some settings. An attacker could exploit this
 to write files outside the intended directory. (CVE-2024-12087)

 Simon Scannell, Pedro Gallegos, and Jasiel Spelman discovered that rsync
 failed to verify symbolic link destinations for some settings. An
 attacker could exploit this for path traversal attacks. (CVE-2024-12088)

 Aleksei Gorban discovered a race condition in rsync's handling of
 symbolic links. An attacker could use this to access sensitive
 information or escalate privileges. (CVE-2024-12747)

Update instructions:

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

Ubuntu 24.04 LTS
  rsync                           3.2.7-1ubuntu1.2

Ubuntu 22.04 LTS
  rsync                           3.2.7-0ubuntu0.22.04.4

Ubuntu 20.04 LTS
  rsync                           3.1.3-8ubuntu0.9

Ubuntu 18.04 LTS
  rsync                           3.1.2-2.1ubuntu1.6+esm2
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  rsync                           3.1.1-3ubuntu1.3+esm4
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  rsync                           3.1.0-2ubuntu0.4+esm2
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.
After a standard system update you need to restart rsync daemons if
configured to make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-7206-2
  https://ubuntu.com/security/notices/USN-7206-1
  https://launchpad.net/bugs/2095004

Package Information:
  https://launchpad.net/ubuntu/+source/rsync/3.2.7-1ubuntu1.2
  https://launchpad.net/ubuntu/+source/rsync/3.2.7-0ubuntu0.22.04.4
  https://launchpad.net/ubuntu/+source/rsync/3.1.3-8ubuntu0.9