CVE-2017-16944

The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to cause a denial of service (infinite loop and stack exhaustion) via vectors involving BDAT commands and an improper check for a '.' character signifying the end of the content, related to the bdat_getc function.

CVSS v3.0

7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0

5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS

63.32% chance of exploitation in the next 30 days, 99th percentile

Published

2017-11-25

Updated

2024-08-05

Proof-of-concept exploits (2)

• https://bugs.exim.org/show_bug.cgi?id=2201
• dbrumley/exim-examples0★ · 2024-02-11

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/43184

Exploit collections (1)

• helloexp/0day/blob/master/00-CVE_EXP/Exim/Exim_4.8_4.9/CVE-2017-16944_DOS.py

References

• CVE Record
• NVD entry

Related

• CVE-2017-16943
• CVE-2020-13955
• CVE-2020-13995
• CVE-2017-16945
• CVE-2017-16939
• CVE-2017-16948