CVE-2023-2868

CriticalActively exploited (CISA KEV)

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.

SeverityCritical
CVSS9.4
Exploit probability—
ProductBarracuda Networks Email Security Gateway (ESG) Appliance
PublishedMay 24, 2023
First seenMay 24, 2023
Added to KEVMay 26, 2023

How to fix

CISA required action

Apply updates per vendor instructions.

CISA due date: Jun 16, 2023

Affected products

ProductAffected versionsFixed in
barracuda email_security_gateway_300_firmware5.1.3.001 ≤ v ≤ 9.2.0.006—
barracuda email_security_gateway_400_firmware5.1.3.001 ≤ v ≤ 9.2.0.006—
barracuda email_security_gateway_600_firmware5.1.3.001 ≤ v ≤ 9.2.0.006—
barracuda email_security_gateway_800_firmware5.1.3.001 ≤ v ≤ 9.2.0.006—
barracuda email_security_gateway_900_firmware5.1.3.001 ≤ v ≤ 9.2.0.006—

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CVE-2023-2868 · Barracuda Networks Email Security Gateway (ESG) Appliance · Dark Radar