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Vulnerability · Published Jul 4, 2024 · Assigned by mitre

CVE-2024-39929

Medium 5.4

In plain English

A medium-severity security flaw in the exim package (Alpine). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 41.5% (higher than 99% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)41.5%top 1.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack tooling1Public PoC

Official description

Exim through 4.97.1 misparses a multiline RFC 2231 header filename, and thus remote attackers can bypass a $mime_filename extension-blocking protection mechanism, and potentially deliver executable attachments to the mailboxes of end users.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20exim4.98-r0ALPINE-CVE-2024-39929
Alpine:v3.21exim4.98-r0ALPINE-CVE-2024-39929
Alpine:v3.22exim4.98-r0ALPINE-CVE-2024-39929
Alpine:v3.23exim4.98-r0ALPINE-CVE-2024-39929
Alpine:v3.24exim4.98-r0ALPINE-CVE-2024-39929
Debian:12exim44.96-15+deb12u5DSA-5728-1
Debian:12exim44.96-15+deb12u5DEBIAN-CVE-2024-39929
Debian:13exim44.98~RC3-2DEBIAN-CVE-2024-39929
Debian:14exim44.98~RC3-2DEBIAN-CVE-2024-39929
Ubuntu:22.04:LTSexim44.95-4ubuntu2.6USN-6939-1
Ubuntu:22.04:LTSexim44.95-4ubuntu2.6UBUNTU-CVE-2024-39929
Ubuntu:24.04:LTSexim44.97-4ubuntu4.1UBUNTU-CVE-2024-39929
Ubuntu:24.04:LTSexim44.97-4ubuntu4.1USN-6939-1

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

Weakness: CWE-116 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

References