CVE-2003-0540
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.
Scoring
- CVSS base score
- 2.3
- EPSS probability
- 57.49%
- Published
- 2003-08-05
- Last modified
- 2026-03-16
Affected products
- n/a n/a