CVE-2018-6789 | BDVDB-2026-96268 Detail
EximExim
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.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.
Weaknesses#
- CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-6789
Exploit#
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.