All vulnerabilities
CVE-2023-2868

Barracuda Networks ESG Appliance Improper Input Validation Vulnerability

Barracuda Networks Email Security Gateway (ESG) ApplianceNetwork & edge
Open in ThreatlineRecord JSON
CVSS
9.4Critical
ExploitationExploited in the wildAdded to KEV 26 May 2023CISA KEV
Exploit odds (EPSS)86.8%Chance of exploitation activity in the next 30 days, higher than 99% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in9.2.0.006Fixed versionCVE List
Federal deadline16 Jun 2023Remediation due date for US federal agenciesCISA KEV
CISA required actionApply updates per vendor instructions. CISA KEV

What fixes it

  • 9.2.0.006Barracuda Email Security GatewayCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 23 May 2023Exploit code publicMetasploit
  2. 24 May 2023, 18:00 UTCPublishedCVE List
  3. 26 May 2023Added to CISA KEVCISA KEV

Public exploit code and templates 1

  • Exploit moduleBarracuda ESG TAR Filename Command Injection 23 May 2023Metasploit

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

Barracuda Email Security Gateway (ESG) appliance contains an improper input validation vulnerability of a user-supplied .tar file, leading to remote command injection.

Text from CVE List

Affected versions 1

  • Barracuda Email Security Gatewayaffected: 5.1.3.001 before 9.2.0.006CVE List

References 4