Improper Data Handling Affecting exim4 package, versions <4.90.1-1ubuntu1.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1804-EXIM4-455432
- published24 Jul 2019
- disclosed25 Jul 2019
Introduced: 24 Jul 2019
CVE-2019-13917 (opens in a new tab)How to fix?
Upgrade Ubuntu:18.04 exim4 to version 4.90.1-1ubuntu1.3 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream exim4 package and not the exim4 package as distributed by Ubuntu.
See How to fix? for Ubuntu:18.04 relevant fixed versions and status.
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).
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-13917
- https://seclists.org/bugtraq/2019/Jul/51
- http://exim.org/static/doc/security/CVE-2019-13917.txt
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-13917
- https://www.debian.org/security/2019/dsa-4488
- https://security-tracker.debian.org/tracker/CVE-2019-13917
- https://security.gentoo.org/glsa/201909-06
- http://www.openwall.com/lists/oss-security/2019/07/26/5