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==========================================================================
Ubuntu Security Notice USN-7206-1
January 14, 2025

Several security issues were fixed in rsync
==========================================================================

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:

Several security issues were fixed in rsync.

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

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                           3.2.7-1ubuntu1.1

Ubuntu 22.04 LTS
  rsync                           3.2.7-0ubuntu0.22.04.3

Ubuntu 20.04 LTS
  rsync                           3.1.3-8ubuntu0.8

Ubuntu 18.04 LTS
  rsync                           3.1.2-2.1ubuntu1.6+esm1
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  rsync                           3.1.1-3ubuntu1.3+esm3
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  rsync                           3.1.0-2ubuntu0.4+esm1
                                  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-7206-1
  CVE-2024-12084, CVE-2024-12085, CVE-2024-12086, CVE-2024-12087,
  CVE-2024-12088, CVE-2024-12747

Package Information:
  https://launchpad.net/ubuntu/+source/rsync/3.2.7-1ubuntu1.1
  https://launchpad.net/ubuntu/+source/rsync/3.2.7-0ubuntu0.22.04.3
  https://launchpad.net/ubuntu/+source/rsync/3.1.3-8ubuntu0.8


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