OESA-2026-3600

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Source

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-3600

Import Source

https://repo.openeuler.org/security/data/osv/OESA-2026-3600.json

JSON Data

https://api.osv.dev/v1/vulns/OESA-2026-3600

Upstream

CVE-2026-18477

Published

2026-09-05T15:03:02Z

Modified

2026-09-05T15:16:25Z

Severity

4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N CVSS Calculator

Summary

tar security update

Details

GNU Tar provides the ability to create tar archives, as well as various other kinds of manipulation. For example, you can use Tar on previously created archives to extract files, to store additional files, or to update or list files which were already stored.

Security Fix(es):

A TOCTOU (Time-of-Check Time-of-Use) vulnerability in GNU tar's incremental dumpdir 'X' rename handling allows a local attacker with write access to a directory being backed up to influence the restore process if the attacker has access to the system where the restore is being performed. During restoration, files or directories may be created, renamed or overwritten outside the intended extraction directory. This could lead to unauthorized file modification or, in some cases, privilege escalation. Exploitation does not require the attacker to modify or craft the archive, and standard backup and restore workflows—including extracting into a newly created directory without using the -P option do not mitigate the issue.(CVE-2026-18477)

Database specific

{
    "severity": "Medium"
}

References

Affected packages

openEuler:22.03-LTS-SP4 / tar

Package

Name: tar
Purl: pkg:rpm/openEuler/tar&distro=openEuler-22.03-LTS-SP4

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1.34-9.oe2203sp4

Ecosystem specific

{
    "aarch64": [
        "tar-1.34-9.oe2203sp4.aarch64.rpm",
        "tar-debuginfo-1.34-9.oe2203sp4.aarch64.rpm",
        "tar-debugsource-1.34-9.oe2203sp4.aarch64.rpm"
    ],
    "noarch": [
        "tar-help-1.34-9.oe2203sp4.noarch.rpm"
    ],
    "src": [
        "tar-1.34-9.oe2203sp4.src.rpm"
    ],
    "x86_64": [
        "tar-1.34-9.oe2203sp4.x86_64.rpm",
        "tar-debuginfo-1.34-9.oe2203sp4.x86_64.rpm",
        "tar-debugsource-1.34-9.oe2203sp4.x86_64.rpm"
    ]
}

Database specific

source

"https://repo.openeuler.org/security/data/osv/OESA-2026-3600.json"