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CVE-2018-0147: Cisco Secure Access Control System Java Deserialization Vulnerability

criticalknown exploitedCVE-2018-0147
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
A vulnerability in Java deserialization used by Cisco Secure Access Control System (ACS) could allow an unauthenticated, remote attacker to execute arbitrary commands on an affected device. The vulnerability is due to insecure deserialization of user-supplied content by the affected software.

CSIRTS triage

vendor: Ciscoproduct: Secure Access Control SystemUnsafe deserializationRemote code execution
What
A Java deserialization vulnerability could allow remote attackers to execute arbitrary commands.
Who is affected
Deployments of Cisco Secure Access Control System (ACS).
Urgency
Urgent remediation is necessary as the vulnerability is actively exploited and critical in severity.
Action
Implement the recommended security updates from Cisco.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-03-25
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2018-0147

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2018-0147coverage & exploitation statusNVD · CVE.org

Recent advisories for Cisco Secure Access

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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