PT-2019-2908 · Exim+2 · Exim+2

Jeremy Harris · Published 2019-07-23 · Updated 2024-06-15 · CVE-2019-13917

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Exim versions 4.85 through 4.92

Description The issue is related to errors in handling objects in memory, which can allow an attacker to elevate privileges and execute arbitrary code. This can occur in unusual configurations where the ${sort } expansion is used for items that can be controlled by an attacker, such as $local part or $domain.

Recommendations For Exim versions 4.85 through 4.92, update to version 4.92.1 to resolve the issue. As a temporary workaround, consider restricting the use of the ${sort } expansion for items that can be controlled by an attacker until the update is applied.

Fix

RCE

Weakness Enumeration

CWE-19

Related Identifiers

BDU:2019-02878

CVE-2019-13917

DSA-4488-1

OPENSUSE-SU-2021:0753-1

OPENSUSE-SU-2024:10746-1

USN-4075-1

Affected Products

Exim

Suse

Ubuntu

References · 73

• http://exim.org/static/doc/security/CVE-2019-13917.txt · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-13917 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2021:0753-1 · Vendor Advisory
• https://debian.org/security/2019/dsa-4488 · Vendor Advisory
• https://security-tracker.debian.org/tracker/source-package/exim4 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4488-1 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-13917 · Security Note
• https://ubuntu.com/security/notices/USN-4075-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-13917 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4075-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-13917 · Security Note
• https://security.gentoo.org/glsa/201909-06 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-13917 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-13917 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:10746-1 · Vendor Advisory