Directory Traversal Affecting tar package, versions <2:1.34-9.el9_7


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.08% (24th percentile)

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  • Snyk IDSNYK-ORACLE9-TAR-14884302
  • published7 Jan 2026
  • disclosed11 Jul 2025

Introduced: 11 Jul 2025

CVE-2025-45582  (opens in a new tab)
CWE-24  (opens in a new tab)

How to fix?

Upgrade Oracle:9 tar to version 2:1.34-9.el9_7 or higher.
This issue was patched in ELSA-2026-0067.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tar package and not the tar package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

GNU Tar through 1.35 allows file overwrite via directory traversal in crafted TAR archives, with a certain two-step process. First, the victim must extract an archive that contains a ../ symlink to a critical directory. Second, the victim must extract an archive that contains a critical file, specified via a relative pathname that begins with the symlink name and ends with that critical file's name. Here, the extraction follows the symlink and overwrites the critical file. This bypasses the protection mechanism of "Member name contains '..'" that would occur for a single TAR archive that attempted to specify the critical file via a ../ approach. For example, the first archive can contain "x -> ../../../../../home/victim/.ssh" and the second archive can contain x/authorized_keys. This can affect server applications that automatically extract any number of user-supplied TAR archives, and were relying on the blocking of traversal. This can also affect software installation processes in which "tar xf" is run more than once (e.g., when installing a package can automatically install two dependencies that are set up as untrusted tarballs instead of official packages). NOTE: the official GNU Tar manual has an otherwise-empty directory for each "tar xf" in its Security Rules of Thumb; however, third-party advice leads users to run "tar xf" more than once into the same directory.

CVSS Base Scores

version 3.1