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.
Product(s):
- 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
- Conectiva Conectiva Linux 7.0
- Conectiva Conectiva Linux 8.0
Question to Ask Vendors:
- Can you confirm whether your systems are affected by CVE-2003-0540, and if so, what steps are you currently taking to mitigate this vulnerability?
- What is your estimated timeline for fully resolving CVE-2003-0540 in your products or services, and how will you communicate updates on this issue to us as your customer?
Recommended Actions:
- Check out the advisory links provided below.