Description
The address parser code in Postfix 1.1.12 and earlier allows remote attackers to cause a denial of service (lock) via (1) a malformed envelope address to a local host that would generate a bounce and contains the ".!" string in the MAIL FROM or Errors-To headers, which causes nqmgr to lock up, or (2) via a valid MAIL FROM with a RCPT TO containing a ".!" string, which causes an instance of the SMTP listener to lock up.
Exploits (2)
exploitdb
WORKING POC
VERIFIED
https://www.exploit-db.com/exploits/22982
References (13)
Scores
EPSS
0.5749
EPSS Percentile
98.2%
Details
Status
published
Products (9)
conectiva/linux
7.0
conectiva/linux
8.0
wietse_venema/postfix
1.0.21
wietse_venema/postfix
1.1.11
wietse_venema/postfix
1.1.12
wietse_venema/postfix
1999-09-06
wietse_venema/postfix
1999-12-31
wietse_venema/postfix
2000-02-28
wietse_venema/postfix
2001-11-15
Published
Aug 27, 2003
Tracked Since
Feb 18, 2026