Barracuda Networks ESG Appliance Improper Input Validation Vulnerability

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Summary

CVECVE-2023-2868
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-05-24 19:15:00 UTC
Updated2023-06-01 20:14:00 UTC
DescriptionA 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.

Risk And Classification

EPSS: 0.892090000 probability, percentile 0.995530000 (date 2026-05-30)

CISA KEV: Listed on 2023-05-26; due 2023-06-16; ransomware use Unknown

Problem Types: CWE-77

CISA Known Exploited Vulnerability

VendorBarracuda Networks
ProductEmail Security Gateway (ESG) Appliance
NameBarracuda Networks ESG Appliance Improper Input Validation Vulnerability
Required ActionApply updates per vendor instructions.
Noteshttps://status.barracuda.com/incidents/34kx82j5n4q9; https://nvd.nist.gov/vuln/detail/CVE-2023-2868

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Barracuda Email Security Gateway 300 - All All All
Operating System Barracuda Email Security Gateway 300 Firmware All All All All
Hardware Barracuda Email Security Gateway 400 - All All All
Operating System Barracuda Email Security Gateway 400 Firmware All All All All
Hardware Barracuda Email Security Gateway 600 - All All All
Operating System Barracuda Email Security Gateway 600 Firmware All All All All
Hardware Barracuda Email Security Gateway 800 - All All All
Operating System Barracuda Email Security Gateway 800 Firmware All All All All
Hardware Barracuda Email Security Gateway 900 - All All All
Operating System Barracuda Email Security Gateway 900 Firmware All All All All

References

ReferenceSourceLinkTags
www.barracuda.com/company/legal/esg-vulnerability MISC www.barracuda.com
Barracuda Networks Status - Barracuda identified a vulnerability (CVE pending) in our Email Security Gateway appliance (ESG) on May 19, 2023. MISC status.barracuda.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

Legacy QID Mappings

  • 150701 Barracuda Email Security Gateway (ESG) Command Injection Vulnerability (CVE-2023-2868)
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