CVE-2018-6789

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.

References

https://www.tenable.com/blog/government-agencies-warn-of-state-sponsored-actors-exploiting-publicly-known-vulnerabilities

https://www.tenable.com/blog/government-agencies-warn-of-state-sponsored-actors-exploiting-publicly-known-vulnerabilities

https://media.defense.gov/2020/Oct/20/2002519884/-1/-1/0/CSA_CHINESE_EXPLOIT_VULNERABILITIES_UOO179811.PDF

https://thibaud-robin.fr/writeups/santhacklaus-2018/archdrive/

https://www.debian.org/security/2018/dsa-4110

https://usn.ubuntu.com/3565-1/

https://lists.debian.org/debian-lts-announce/2018/02/msg00009.html

https://git.exim.org/exim.git/commit/cf3cd306062a08969c41a1cdd32c6855f1abecf1

https://exim.org/static/doc/security/CVE-2018-6789.txt

https://devco.re/blog/2018/03/06/exim-off-by-one-RCE-exploiting-CVE-2018-6789-en/

http://www.securitytracker.com/id/1040461

http://www.securityfocus.com/bid/103049

http://www.openwall.com/lists/oss-security/2018/02/07/2

http://packetstormsecurity.com/files/162959/Exim-base64d-Buffer-Overflow.html

http://openwall.com/lists/oss-security/2018/02/10/2

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3