CVE-2003-0540

    Dashboard / Vulnerabilities / CVE-2003-0540

    CVE-2003-0540

    Published: 27 Aug 2003Last Modified: 10 Apr 2026

    Summary:

    Details: 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.

    References: http://secunia.com/advisories/9433, http://www.debian.org/security/2003/dsa-363, http://www.linuxsecurity.com/advisories/engarde_advisory-3517.html, http://www.mandriva.com/security/advisories?name=MDKSA-2003:081, http://www.novell.com/linux/security/advisories/2003_033_postfix.html, http://www.redhat.com/support/errata/RHSA-2003-251.html, http://www.debian.org/security/2003/dsa-363, http://www.redhat.com/support/errata/RHSA-2003-251.html, http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000717, http://lists.grok.org.uk/pipermail/full-disclosure/2003-August/007693.html, http://marc.info/?l=bugtraq&m=106001525130257&w=2, http://marc.info/?l=bugtraq&m=106029188614704&w=2, http://www.kb.cert.org/vuls/id/895508, http://www.securityfocus.com/bid/8333, https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A544

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High