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CVE-2026-54230

Abrt: event handler scripts follow symlinks when writing output files, allowing arbitrary file overwrites

publishedCWE-59

A symlink following vulnerability was found in the ABRT post-create event handler scripts in libreport. Event scripts write output files using shell redirections without the O_NOFOLLOW flag. If the target file is replaced with a symlink, the shell process running as root follows the symlink and writes content to the symlink target, allowing arbitrary file overwrites on the system.

Technical severity7.0 highCVSS 3.1 · CNA: redhat
Published2026-06-13Source updated 2026-11-04
Collected2026-11-053 attributed sources

Fixes and workarounds

Workaround

The following practices would help for avoiding exposure and mitigate this flaw: - Disable or remove ABRT if it is not required. On RHEL 8 systems where ABRT is installed, it can be disabled with: systemctl disable --now abrtd.service abrt-journal-core.service abrt-oops.service abrt-xorg.service - On Fedora systems, consider using systemd-coredump instead of ABRT for crash handling - Restrict local user access to systems running ABRT, as this vulnerability requires local access

Source: CNA: redhat

Fix

RHSA-2026:54272: Red Hat Enterprise Linux AppStream (v. 8)

Source: ADP: redhat-SADP

Workaround

The following practices would help for avoiding exposure and mitigate this flaw: - Disable or remove ABRT if it is not required. On RHEL 8 systems where ABRT is installed, it can be disabled with: systemctl disable --now abrtd.service abrt-journal-core.service abrt-oops.service abrt-xorg.service - On Fedora systems, consider using systemd-coredump instead of ABRT for crash handling - Restrict local user access to systems running ABRT, as this vulnerability requires local access

Source: ADP: redhat-SADP

Affected products and versions

ProductVersionsAuthority
Red Hat Enterprise Linux 7 Extended Lifecycle Support
Red Hat
abrt
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:2.1.11-62.el7_9; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8
Red Hat
abrt
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:2.10.9-26.el8_10; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Red Hat
abrt
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:2.10.9-25.el8_4.2; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
Red Hat
abrt
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:2.10.9-25.el8_4.2; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Red Hat
abrt
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:2.10.9-25.el8_6.2; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
Red Hat
abrt
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:2.10.9-25.el8_6.2; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Red Hat
abrt
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:2.10.9-25.el8_8.2; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Red Hat
abrt
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:2.10.9-25.el8_8.2; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 6
Red Hat
abrt
https://access.redhat.com/downloads/content/package-browser/ 		Range not reported
Other versions: unknown 		CNA: redhat
Red Hat Enterprise Linux 6
Red Hat
abrt
https://access.redhat.com/downloads/content/package-browser/ 		Range not reported
Other versions: unknown 		ADP: redhat-SADP
Red Hat Enterprise Linux 7
Red Hat
abrt
https://access.redhat.com/downloads/content/package-browser/ 		Range not reported
Other versions: affected 		ADP: redhat-SADP
Red Hat Enterprise Linux 8
Red Hat
abrt
https://access.redhat.com/downloads/content/package-browser/ 		Range not reported
Other versions: affected 		ADP: redhat-SADP

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

NVD applicability configurations (1)

These expressions retain AND/OR operators, negation, and required environmental products. A listed product is not sufficient to establish exposure when additional conditions apply.

[
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:redhat:automatic_bug_reporting_tool:*:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:fedoraproject:fedora:43:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:fedoraproject:fedora:44:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  }
]

CVSS assessments

Version / scoreVectorAuthority
3.1 / 7.0
high		 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HCNA: redhat
3.1 / 7.0
high		 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HADP: redhat-SADP
3.1 / 7.8
high		 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD: [email protected]
3.1 / 7.0
high		 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HNVD: [email protected]
3.1 / 7.0
high		 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HNVD: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

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