CVE-2019-10149
Exim Mail Transfer Agent (MTA) Improper Input Validation
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 10 July 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 99.96% probability · 100th percentile
- Public exploits
- 3 in Exploit-DB · verified · first 5 June 2019
- CISA KEV
- Listed 10 January 2022 · due 10 July 2022
- Weakness
- CWE-78
- Affected
- exim/exim · canonical/ubuntu linux · debian/debian linux
- Source
- secalert@redhat.com
EPSS 100.0% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2019-10149
Public exploits (3)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
| EDB-ID | Title | Type | Published | Verified |
|---|---|---|---|---|
| EDB-47307source ↗ | Exim 4.87 / 4.91 - Local Privilege Escalation (Metasploit)linux · Metasploit | local | 26 August 2019 | yes |
| EDB-46996source ↗ | Exim 4.87 - 4.91 - Local Privilege Escalationlinux · Marco Ivaldi | local | 17 June 2019 | yes |
| EDB-46974source ↗ | Exim 4.87 < 4.91 - (Local / Remote) Command Executionlinux · Qualys Corporation | remote | 5 June 2019 | no |
References
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00020.htmlMailing List, Third Party Advisory
- http://packetstormsecurity.com/files/153218/Exim-4.9.1-Remote-Command-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/153312/Exim-4.91-Local-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/154198/Exim-4.91-Local-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2019/Jun/16Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/06/05/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/06/05/3Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/06/05/4Exploit, Mailing List
- http://www.openwall.com/lists/oss-security/2019/06/06/1Exploit, Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/07/25/6Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/07/25/7Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/07/26/4Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/04/7Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/108679Broken Link, Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10149Issue Tracking, Third Party Advisory
- https://seclists.org/bugtraq/2019/Jun/5Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201906-01Third Party Advisory
- https://usn.ubuntu.com/4010-1/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4456Third Party Advisory
- https://www.exim.org/static/doc/security/CVE-2019-10149.txtVendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00020.htmlMailing List, Third Party Advisory
- http://packetstormsecurity.com/files/153218/Exim-4.9.1-Remote-Command-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/153312/Exim-4.91-Local-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/154198/Exim-4.91-Local-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2019/Jun/16Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/06/05/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/06/05/3Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/06/05/4Exploit, Mailing List
- http://www.openwall.com/lists/oss-security/2019/06/06/1Exploit, Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/07/25/6Mailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.