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Rocky Linux 9.6 [TuxCare] Security Update: tar (ALMALINUX9.6:CLSA-2026:1769513855)
medium Nessus Plugin ID 359604
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Synopsis
The Rocky Linux host is missing one or more security updates.Description
The Rocky Linux 9.6 host has a package installed that is affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1769513855 advisory.- 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. (CVE-2025-45582)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Update the affected tar package based on the guidance in TuxCare advisory ALMALINUX9.6:CLSA-2026:1769513855.See Also
Plugin Details
Severity: Medium
ID: 359604
File Name: tuxcare_rocky_linux_9.6_CLSA-2026-1769513855.nasl
Version: 1.2
Type: Local
Published: 10/1/2026
Updated: 10/2/2026
Supported Sensors: Continuous Assessment, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 2.3
Percentile: 9.42
Vendor
Vendor Severity: Moderate
CVSS v2
Risk Factor: Low
Base Score: 2.6
Temporal Score: 2
Vector: CVSS2#AV:L/AC:H/Au:N/C:N/I:P/A:P
CVSS Score Source: CVE-2025-45582
CVSS v3
Risk Factor: Medium
Base Score: 4.1
Temporal Score: 3.7
Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:L/A:L
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
Required KB Items: Host/OS/extended-third-party, Host/local_checks_enabled, Host/RockyLinux/release, Host/RockyLinux/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 1/27/2026
Vulnerability Publication Date: 7/11/2025
Reference Information
CVE: CVE-2025-45582
CLSA: 2026:1769513855