Vulnerability-Lookup

RHSA-2026:0135

Vulnerability from csaf_redhat - Published: 2026-01-06 13:36 - Updated: 2026-01-06 18:37

Summary

Red Hat Security Advisory: tar security update

Notes

Topic

An update for tar is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details

The GNU tar program can save multiple files in an archive and restore files from an archive. Security Fix(es): * tar: Tar path traversal (CVE-2025-45582) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

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  "vulnerabilities": [
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      "cwe": {
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        "name": "Path Traversal: \u0027../filedir\u0027"
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      "discovery_date": "2025-07-11T17:00:47.340822+00:00",
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          "text": "2379592"
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        {
          "category": "description",
          "text": "A relative path traversal flaw was found in the gnu tar utility. When archives with relative paths are extracted without the \u2018--keep-old-files\u2019 (\u2018-k\u2019), the extraction process may overwrite existing files that the current user has access to. The server may be impacted if these files are critical to the operation of some service.",
          "title": "Vulnerability description"
        },
        {
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          "text": "tar: Tar path traversal",
          "title": "Vulnerability summary"
        },
        {
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          "text": "Within regulated environments, a combination of the following controls acts as a significant barrier to successful exploitation of a CWE-24: Path Traversal: \u0027../filedir\u0027 and therefore downgrades the severity of this particular CVE from Moderate to Low.\n\nBaseline configurations enforce strict privilege levels for code execution, allowing only authorized processes to access or modify files within approved directories. Input validation sanitizes and verifies user-supplied file paths against defined patterns, blocking traversal sequences that could enable unauthorized access outside designated locations. Configuration settings further restrict directory and file system access, ensuring applications operate within approved resources and execution boundaries.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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          "BaseOS-10.0.Z.E2S:tar-debugsource-2:1.35-7.el10_0.2.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-45582"
        },
        {
          "category": "external",
          "summary": "RHBZ#2379592",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2379592"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-45582",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-45582"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-45582",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-45582"
        },
        {
          "category": "external",
          "summary": "https://github.com/i900008/vulndb/blob/main/Gnu_tar_vuln.md",
          "url": "https://github.com/i900008/vulndb/blob/main/Gnu_tar_vuln.md"
        },
        {
          "category": "external",
          "summary": "https://www.gnu.org/software/tar/",
          "url": "https://www.gnu.org/software/tar/"
        },
        {
          "category": "external",
          "summary": "https://www.gnu.org/software/tar/manual/html_node/Integrity.html#Integrity",
          "url": "https://www.gnu.org/software/tar/manual/html_node/Integrity.html#Integrity"
        }
      ],
      "release_date": "2025-07-11T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-01-06T13:36:23+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "BaseOS-10.0.Z.E2S:tar-2:1.35-7.el10_0.2.aarch64",
            "BaseOS-10.0.Z.E2S:tar-2:1.35-7.el10_0.2.ppc64le",
            "BaseOS-10.0.Z.E2S:tar-2:1.35-7.el10_0.2.s390x",
            "BaseOS-10.0.Z.E2S:tar-2:1.35-7.el10_0.2.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:0135"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
          "product_ids": [
            "BaseOS-10.0.Z.E2S:tar-2:1.35-7.el10_0.2.aarch64",
            "BaseOS-10.0.Z.E2S:tar-2:1.35-7.el10_0.2.ppc64le",
            "BaseOS-10.0.Z.E2S:tar-2:1.35-7.el10_0.2.s390x",
            "BaseOS-10.0.Z.E2S:tar-2:1.35-7.el10_0.2.src",
            "BaseOS-10.0.Z.E2S:tar-2:1.35-7.el10_0.2.x86_64",
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            "BaseOS-10.0.Z.E2S:tar-debugsource-2:1.35-7.el10_0.2.s390x",
            "BaseOS-10.0.Z.E2S:tar-debugsource-2:1.35-7.el10_0.2.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.6,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.1"
          },
          "products": [
            "BaseOS-10.0.Z.E2S:tar-2:1.35-7.el10_0.2.aarch64",
            "BaseOS-10.0.Z.E2S:tar-2:1.35-7.el10_0.2.ppc64le",
            "BaseOS-10.0.Z.E2S:tar-2:1.35-7.el10_0.2.s390x",
            "BaseOS-10.0.Z.E2S:tar-2:1.35-7.el10_0.2.src",
            "BaseOS-10.0.Z.E2S:tar-2:1.35-7.el10_0.2.x86_64",
            "BaseOS-10.0.Z.E2S:tar-debuginfo-2:1.35-7.el10_0.2.aarch64",
            "BaseOS-10.0.Z.E2S:tar-debuginfo-2:1.35-7.el10_0.2.ppc64le",
            "BaseOS-10.0.Z.E2S:tar-debuginfo-2:1.35-7.el10_0.2.s390x",
            "BaseOS-10.0.Z.E2S:tar-debuginfo-2:1.35-7.el10_0.2.x86_64",
            "BaseOS-10.0.Z.E2S:tar-debugsource-2:1.35-7.el10_0.2.aarch64",
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            "BaseOS-10.0.Z.E2S:tar-debugsource-2:1.35-7.el10_0.2.s390x",
            "BaseOS-10.0.Z.E2S:tar-debugsource-2:1.35-7.el10_0.2.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "tar: Tar path traversal"
    }
  ]
}

CVE-2025-45582 (GCVE-0-2025-45582)

Vulnerability from cvelistv5 – Published: 2025-07-11 00:00 – Updated: 2025-11-02 00:12

Summary

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.

Severity ?

4.1 (Medium)


                        
                          CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:L/A:L

CWE

CWE-24 - Path Traversal: '../filedir'

Assigner

mitre

References

URL

	Vendor	Product	Version
	GNU	Tar	Affected: 0 , ≤ 1.35 (custom)

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

RHSA-2026:0135

CVE-2025-45582 (GCVE-0-2025-45582)

Tags

Sightings

Nomenclature