CVE-2019-13917

critical
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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).

References

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

Details

Source: MITRE

Published: 2019-07-25

Updated: 2019-09-07

Type: CWE-19

Risk Information

CVSS v2

Base Score: 10

Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 10

Severity: HIGH

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:* versions from 4.85 to 4.92 (inclusive)

Configuration 2

OR

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Tenable Plugins

View all (8 total)

IDNameProductFamilySeverity
149614openSUSE Security Update : exim (openSUSE-2021-677) (Stack Clash)NessusSuSE Local Security Checks
critical
128595GLSA-201909-06 : Exim: Multiple vulnerabilitiesNessusGentoo Local Security Checks
critical
128036Exim < 4.92.1 Input-Validation RCENessusSMTP problems
critical
127732openSUSE Security Update : exim (openSUSE-2019-1812)NessusSuSE Local Security Checks
critical
127096Ubuntu 16.04 LTS / 18.04 LTS / 19.04 : Exim vulnerability (USN-4075-1)NessusUbuntu Local Security Checks
critical
127086FreeBSD : Exim -- RCE in ${sort} expansion (3e0da406-aece-11e9-8d41-97657151f8c2)NessusFreeBSD Local Security Checks
critical
127077Debian DSA-4488-1 : exim4 - security updateNessusDebian Local Security Checks
critical
127075Amazon Linux AMI : exim (ALAS-2019-1252)NessusAmazon Linux Local Security Checks
critical