CVE-2003-0540 describes a denial-of-service vulnerability in Postfix 1.1.12 and earlier, affecting various Linux distributions. Remote attackers can exploit malformed envelope addresses containing the ".!" string in MAIL FROM or Errors-To headers, or in RCPT TO with a valid MAIL FROM, to cause nqmgr or an SMTP listener instance to lock up. This vulnerability has a CVSS score of 5.0 (AV:N/AC:L/Au:N/C:N/I:N/A:P), indicating a network-exploitable, low-complexity attack leading to partial availability impact. While not actively exploited in the wild and not on the KEV catalog, public exploit code exists on ExploitDB, though there is no evidence of community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.0.21CPE matchmatch criteria | cpe:2.3:a:wietse_venema:postfix:1.0.21:*:*:*:*:*:*:* | ||
1.1.11CPE matchmatch criteria | cpe:2.3:a:wietse_venema:postfix:1.1.11:*:*:*:*:*:*:* | ||
1.1.12CPE matchmatch criteria | cpe:2.3:a:wietse_venema:postfix:1.1.12:*:*:*:*:*:*:* | ||
1999-09-06CPE matchmatch criteria | cpe:2.3:a:wietse_venema:postfix:1999-09-06:*:*:*:*:*:*:* | ||
1999-12-31CPE matchmatch criteria | cpe:2.3:a:wietse_venema:postfix:1999-12-31:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.