CVE-2017-16943

The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via vectors involving BDAT commands.

CVSS v3.0

9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS

46.71% chance of exploitation in the next 30 days, 99th percentile

Published

2017-11-25

Updated

2024-08-05

Proof-of-concept exploits (4)

• https://bugs.exim.org/show_bug.cgi?id=2199
• LetUsFsck/PoC-Exploit-Mirror/tree/master/CVE-2017-16944
• beraphin/CVE-2017-169430★ · 2019-11-14
• dbrumley/exim-examples0★ · 2024-02-11

Exploit collections (1)

• helloexp/0day/blob/master/00-CVE_EXP/Exim/Exim_4.8_4.9/CVE-2017-16943_RCE.py

References

• CVE Record
• NVD entry

Related

• CVE-2017-8890
• CVE-2018-6789
• CVE-2017-16944
• CVE-2020-13955
• CVE-2020-13995
• CVE-2017-16939