RCE in Exim
CVE-2019-10149
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 1.000 (100.0th percentile), scored .
Very high probability of exploitation in the next 30 days — among the top 0.1% most-likely-to-be-exploited CVEs. 100th percentile — 100.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
The 30-day trend appears once there are two daily scores.
Affected products
- Exim — versions 4.92
- Canonical Ubuntu Linux — versions 18.04, 18.10
- Debian Linux — versions 9.0
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- www.openwall.com/lists/oss-security/2019/06/05/2 (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4010-1/ (vendor-advisory, Third Party Advisory)
- www.openwall.com/lists/oss-security/2019/06/05/3 (mailing-list, Patch, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2019/06/05/4 (mailing-list, Exploit, Mailing List)
- www.debian.org/security/2019/dsa-4456 (vendor-advisory, Third Party Advisory)
- seclists.org/bugtraq/2019/Jun/5 (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/201906-01 (vendor-advisory, Third Party Advisory)
- www.openwall.com/lists/oss-security/2019/06/06/1 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- www.securityfocus.com/bid/108679 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00020.html (vendor-advisory, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-10149?
- CVE-2019-10149 is a critical-severity vulnerability in Exim, classified under OS Command Injection. CVSS score: 9.8/10. Published 2019-06-05.
- How severe is CVE-2019-10149?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2019-10149 known to be exploited?
- Yes. CVE-2019-10149 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-01-10), indicating it is being actively exploited. 43 public proof-of-concept repositories are indexed.