Alcatel OmniPCX Enterprise Remote Code Execution Vulnerability
masterCGI in the Unified Maintenance Tool in Alcatel OmniPCX Enterprise Communication Server R7.1 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in the user parameter during a ping action.
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 4 / 5
- KEV catalog (CISA)15 Apr 2022
- Exploited in EUVD (ENISA)15 Apr 2022
- Used by ransomwareno
- EPSS above 10 %97.4%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: Apply updates per vendor instructions.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Affected products
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
-
Published
-
Exploitation reported (ENISA)
-
Added to the KEV catalog
-
CISA remediation due date
-
EPSS peak: 97.4%