CVE-2023-2868

CriticalCVSS 9.8/10Known exploited (CISA KEV)Last modified Jun 17, 2026

Description

A remote command injection vulnerability exists in the Barracuda Email Security Gateway (appliance form factor only) product effecting versions 5.1.3.001-9.2.0.006. The vulnerability arises out of a failure to comprehensively sanitize the processing of .tar file (tape archives). The vulnerability stems from incomplete input validation of a user-supplied .tar file as it pertains to the names of the files contained within the archive. As a consequence, a remote attacker can specifically format these file names in a particular manner that will result in remotely executing a system command through Perl's qx operator with the privileges of the Email Security Gateway product. This issue was fixed as part of BNSF-36456 patch. This patch was automatically applied to all customer appliances.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-20 CWE-77

Affected software

Vendor	Product	Versions
Barracuda	Barracuda Email Security Gateway	>= 5.1.3.001, < 9.2.0.006

References

https://status.barracuda.com/incidents/34kx82j5n4q9Vendor Advisory
https://www.barracuda.com/company/legal/esg-vulnerabilityMitigation, Vendor Advisory
https://status.barracuda.com/incidents/34kx82j5n4q9Vendor Advisory
https://www.barracuda.com/company/legal/esg-vulnerabilityMitigation, Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-2868US Government Resource

Timeline

Published: May 24, 2023
Last modified: Jun 17, 2026
Added to CISA KEV: May 26, 2023
NVD status: Analyzed

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