CVE-2019-10149

Exim Mail Transfer Agent (MTA) Improper Input Validation

9.8 CRITICALActively exploited (CISA KEV)Public exploitEPSS 100.0%

Published5 Jun 2019
Added to CISA KEV10 Jan 2022
Remediation due10 Jul 2022

Description

A flaw was found in Exim versions 4.87 to 4.91 (inclusive). Improper validation of recipient address in deliver_message() function in /src/deliver.c may lead to remote command execution.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Exim≥ 4.87 ≤ 4.91

Canonical Ubuntu Linux18.04 · 18.10

Debian Linux9.0

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

Patch & vendor advisories

References

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00020.htmlMailing ListThird Party Advisory
http://packetstormsecurity.com/files/153218/Exim-4.9.1-Remote-Command-Execution.htmlExploitThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/153312/Exim-4.91-Local-Privilege-Escalation.htmlExploitThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/154198/Exim-4.91-Local-Privilege-Escalation.htmlExploitThird Party AdvisoryVDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10149Issue TrackingThird Party Advisory
http://seclists.org/fulldisclosure/2019/Jun/16Mailing ListThird Party Advisory
https://seclists.org/bugtraq/2019/Jun/5Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/201906-01Third Party Advisory
https://usn.ubuntu.com/4010-1/Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-10149US Government Resource

and 11 more references

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2019-10149 being actively exploited?

Yes. CVE-2019-10149 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 10 Jan 2022.

How severe is CVE-2019-10149?

CVE-2019-10149 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 100.0% probability of exploitation.

Which products are affected by CVE-2019-10149?

Affected products include Exim, Canonical Ubuntu Linux, Debian Linux.

How do I fix CVE-2019-10149?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2019-10149 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.