CVE-2018-6789
An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may...
Basic Information
- CVE State
- PUBLISHED
- Reserved Date
- February 06, 2018
- Published Date
- February 08, 2018
- Last Updated
- February 07, 2025
- Vendor
- n/a
- Product
- n/a
- Description
- An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely.
CVSS Scores
SSVC Information
- Exploitation
- active
- Automatable
- Yes
- Technical Impact
- total
References
https://exim.org/static/doc/security/CVE-2018-6789.txt
http://www.openwall.com/lists/oss-security/2018/02/07/2
https://usn.ubuntu.com/3565-1/
http://openwall.com/lists/oss-security/2018/02/10/2
http://www.securitytracker.com/id/1040461
https://www.debian.org/security/2018/dsa-4110
https://www.exploit-db.com/exploits/44571/
https://lists.debian.org/debian-lts-announce/2018/02/msg00009.html
https://git.exim.org/exim.git/commit/cf3cd306062a08969c41a1cdd32c6855f1abecf1
https://devco.re/blog/2018/03/06/exim-off-by-one-RCE-exploiting-CVE-2018-6789-en/
http://www.securityfocus.com/bid/103049
https://www.exploit-db.com/exploits/45671/
http://packetstormsecurity.com/files/162959/Exim-base64d-Buffer-Overflow.html
Known Exploited Vulnerability Information
| Source | Added Date |
|---|---|
| CISA | 2021-11-03 00:00:00 UTC |
Potential Proof of Concepts
Warning: These PoCs have not been tested and could contain malware. Use at your own risk.
thistehneisen/CVE-2018-6789-Python3
Type: github • Created: 2023-08-05 11:28:49 UTC • Stars: 1
Exim < 4.90.1 RCE Vulnerability remake for Python3 with arguments passed from CLI
synacktiv/Exim-CVE-2018-6789
Type: github • Created: 2019-10-10 09:36:03 UTC • Stars: 9
PoC materials to exploit CVE-2018-6789
beraphin/CVE-2018-6789
Type: github • Created: 2018-11-08 08:25:42 UTC • Stars: 2