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.
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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-08T01:58:10.982Z

Reserved: 2003-07-14T00:00:00

Link: CVE-2003-0540

cve-icon Vulnrichment

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cve-icon NVD

Status : Deferred

Published: 2003-08-27T04:00:00.000

Modified: 2025-04-03T01:03:51.193

Link: CVE-2003-0540

cve-icon Redhat

Severity :

Publid Date: 2003-08-03T00:00:00Z

Links: CVE-2003-0540 - Bugzilla

cve-icon OpenCVE Enrichment

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