CVE-2019-13917
First published: Thu Jul 25 2019(Updated: )
Exim 4.85 through 4.92 (fixed in 4.92.1) allows remote code execution as root in some unusual configurations that use the ${sort } expansion for items that can be controlled by an attacker (e.g., $local_part or $domain).
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Exim Exim | >=4.85<=4.92 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| debian/exim4 | 4.92-8+deb10u6 4.92-8+deb10u8 4.94.2-7 4.94.2-7+deb11u1 4.96-15+deb12u1 4.96-15+deb12u2 4.97~RC2-2 |
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Reference Links
- http://exim.org/static/doc/security/CVE-2019-13917.txt
- http://www.openwall.com/lists/oss-security/2019/07/26/5
- https://seclists.org/bugtraq/2019/Jul/51
- https://security.gentoo.org/glsa/201909-06
- https://www.debian.org/security/2019/dsa-4488
- https://www.openwall.com/lists/oss-security/2019/07/22/3
- https://www.exim.org/static/doc/security/CVE-2019-13917.txt
- https://git.exim.org/exim.git/commit/21aa05977abff1eaa69bb97ef99080220915f7c0
- https://security-tracker.debian.org/tracker/CVE-2019-13917
Frequently Asked Questions
What is CVE-2019-13917?
CVE-2019-13917 is a vulnerability in Exim 4.85 through 4.92 that allows remote code execution as root in certain configurations.
What is the severity of CVE-2019-13917?
CVE-2019-13917 has a severity rating of critical (9.8).
How does CVE-2019-13917 allow remote code execution?
CVE-2019-13917 allows remote code execution by exploiting certain configurations that use the ${sort } expansion for controllable items, such as $local_part or $domain.
Which versions of Exim are affected by CVE-2019-13917?
Exim versions 4.85 through 4.92 are affected by CVE-2019-13917.
How can I fix CVE-2019-13917?
The vulnerability has been fixed in Exim version 4.92.1, so updating to this version or later will fix the issue.
- collector/nvd-index
- collector/security-tracker-debian
- agent/weakness
- agent/severity
- agent/references
- agent/author
- agent/description
- agent/type
- agent/event
- agent/last-modified-date
- agent/remedy
- agent/first-publish-date
- agent/softwarecombine
- agent/tags
- collector/mitre-cve
- source/MITRE
- vendor/exim
- canonical/exim exim
- version/exim exim/4.85
- version/exim exim/4.92
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- version/debian debian linux/10.0
- package-manager/debian