CVE-2019-13917

Description

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).

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 18.89% Top 10%
Vendor Advisory debian.org Vendor Advisory gentoo.org Vendor Advisory exim.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://exim.org/static/doc/security/CVE-2019-13917.txt patch vendor advisory
https://www.debian.org/security/2019/dsa-4488 third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2019/07/26/5 third party advisory mailing list
https://seclists.org/bugtraq/2019/Jul/51 third party advisory mailing list
https://security.gentoo.org/glsa/201909-06 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-13917?
CVE-2019-13917 has been scored as a critical severity vulnerability.
How to fix CVE-2019-13917?
To fix CVE-2019-13917, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-13917 being actively exploited in the wild?
It is possible that CVE-2019-13917 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~19% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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