Advisories

rsync < 3.5.0 Symlink Race Condition Information Disclosure

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severity
medium
date
Affecting
  • rsync <= 3.4.4

CWE
  • CWE-59 Improper Link Resolution Before File Access ('Link Following')
  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
CVSS
5.7
CVSS V4 Vector
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Description
rsync before 3.5.0 contains a symlink race condition vulnerability in the sender's source tree traversal that allows an attacker who can manipulate a parent directory of the source tree to redirect file reads to unintended paths. Attackers can atomically replace a parent directory component with a symlink pointing outside the source root between path resolution and file open operations to disclose file contents outside the intended transfer root.

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