Race Condition Affecting rsync package, versions <3.1.1-3ubuntu1.3+esm3


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

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  • Snyk IDSNYK-UBUNTU1604-RSYNC-8622776
  • published15 Jan 2025
  • disclosed14 Jan 2025

Introduced: 14 Jan 2025

NewCVE-2024-12747  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade Ubuntu:16.04 rsync to version 3.1.1-3ubuntu1.3+esm3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rsync package and not the rsync package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

A flaw was found in rsync. This vulnerability arises from a race condition during rsync's handling of symbolic links. Rsync's default behavior when encountering symbolic links is to skip them. If an attacker replaced a regular file with a symbolic link at the right time, it was possible to bypass the default behavior and traverse symbolic links. Depending on the privileges of the rsync process, an attacker could leak sensitive information, potentially leading to privilege escalation.

CVSS Scores

version 3.1