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CVE-2019-10149: Exim Mail Transfer Agent (MTA) Improper Input Validation

criticalknown exploitedpublic exploitCVE-2019-10149
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.
Improper validation of recipient address in deliver_message() function in /src/deliver.c may lead to remote command execution.

CSIRTS triage

vendor: Eximproduct: Mail Transfer Agent (MTA)Remote code execution
What
Improper validation of recipient address may lead to remote command execution.
Who is affected
Deployments of Exim Mail Transfer Agent.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Update to the latest version of Exim.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-01-10
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2019-10149

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-2019-10149coverage & exploitation statusNVD · CVE.org

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