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.
2003-08-27T04:00:00.000
2025-04-03T01:03:51.193
Deferred
CVSSv2: 5.0 (MEDIUM)
AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Application | wietse_venema | postfix | 1.0.21 | Yes |
Application | wietse_venema | postfix | 1.1.11 | Yes |
Application | wietse_venema | postfix | 1.1.12 | Yes |
Application | wietse_venema | postfix | 1999-09-06 | Yes |
Application | wietse_venema | postfix | 1999-12-31 | Yes |
Application | wietse_venema | postfix | 2000-02-28 | Yes |
Application | wietse_venema | postfix | 2001-11-15 | Yes |
Operating System | conectiva | linux | 7.0 | Yes |
Operating System | conectiva | linux | 8.0 | Yes |