5.4
MEDIUM
CVE-2024-39929
Exim MIME Filename Validation Remote Code Execution Vulnerability
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.

INFO

Published Date :

July 4, 2024, 3:15 p.m.

Last Modified :

Nov. 21, 2024, 9:28 a.m.

Remotely Exploitable :

Yes !

Impact Score :

2.5

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2024-39929 has a 5 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2024-39929 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Exim exim

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Exim SMTP Vulnerabilities list

cve exim vulnerabilities

Updated: 1 week, 5 days ago
0 stars 0 fork 0 watcher
Born at : Dec. 10, 2024, 1:42 p.m. This repo has been linked 15 different CVEs too.

POC to test CVE-2024-39929 against EXIM mail servers

Python

Updated: 1 month ago
2 stars 0 fork 0 watcher
Born at : July 29, 2024, 3:09 p.m. This repo has been linked 1 different CVEs too.

Detection method for Exim vulnerability CVE-2024-39929

Updated: 2 months ago
3 stars 0 fork 0 watcher
Born at : July 12, 2024, 6:01 p.m. This repo has been linked 1 different CVEs too.

A list of all of my starred repos, automated using Github Actions 🌟

github-actions stars

Updated: 3 weeks, 1 day ago
0 stars 0 fork 0 watcher
Born at : Jan. 4, 2023, 11:20 a.m. This repo has been linked 10 different CVEs too.

📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.

security cve exploit poc vulnerability

Updated: 2 weeks, 2 days ago
6566 stars 1140 fork 1140 watcher
Born at : Dec. 8, 2019, 1:03 p.m. This repo has been linked 958 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2024-39929 vulnerability anywhere in the article.

  • The Cyber Express
Weekly Vulnerability Report: Cyble Urges Fixes in SolarWinds, Cisco, Ivanti & Microsoft

Cyble Research & Intelligence Labs (CRIL) researchers have analyzed more than 100 security vulnerabilities in the last two weeks, with flaws in IT products from SolarWinds, Cisco, Ivanti, Microsoft, E ... Read more

Published Date: Jul 29, 2024 (4 months, 3 weeks ago)

The following table lists the changes that have been made to the CVE-2024-39929 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://bugs.exim.org/show_bug.cgi?id=3099#c4
    Added Reference https://git.exim.org/exim.git/commit/1b3209b0577a9327ebb076f3b32b8a159c253f7b
    Added Reference https://git.exim.org/exim.git/commit/6ce5c70cff8989418e05d01fd2a57703007a6357
    Added Reference https://github.com/Exim/exim/compare/exim-4.98-RC2...exim-4.98-RC3
    Added Reference https://www.rfc-editor.org/rfc/rfc2231.txt
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Jul. 09, 2024

    Action Type Old Value New Value
    Added CVSS V3.1 CISA-ADP AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
  • CVE Received by [email protected]

    Jul. 04, 2024

    Action Type Old Value New Value
    Added 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.
    Added Reference MITRE https://git.exim.org/exim.git/commit/6ce5c70cff8989418e05d01fd2a57703007a6357 [No types assigned]
    Added Reference MITRE https://git.exim.org/exim.git/commit/1b3209b0577a9327ebb076f3b32b8a159c253f7b [No types assigned]
    Added Reference MITRE https://github.com/Exim/exim/compare/exim-4.98-RC2...exim-4.98-RC3 [No types assigned]
    Added Reference MITRE https://www.rfc-editor.org/rfc/rfc2231.txt [No types assigned]
    Added Reference MITRE https://bugs.exim.org/show_bug.cgi?id=3099#c4 [No types assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2024-39929 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2024-39929 weaknesses.

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability