CVE-2003-0540
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…
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Timeline
ID reserved
By mitre
- 22 days later
· 22 days later
Published
- 21 years later
· 21 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 21.3% · top 2.4% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (13)
- CLA-2003:717 (opens in a new tab)vendor-advisoryx_refsource_CONECTIVAx_transferred
- 8333 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 20030804 Postfix 1.1.12 remote DoS / Postfix 1.1.11 bounce scanning (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- VU#895508 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- 2003-0029 (opens in a new tab)vendor-advisoryx_refsource_TRUSTIXx_transferred
- MDKSA-2003:081 (opens in a new tab)vendor-advisoryx_refsource_MANDRAKEx_transferred
- RHSA-2003:251 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- DSA-363 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 20030804 Postfix 1.1.12 remote DoS / Postfix 1.1.11 bounce scanning (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- ESA-20030804-019 (opens in a new tab)vendor-advisoryx_refsource_ENGARDEx_transferred
- SuSE-SA:2003:033 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- oval:org.mitre.oval:def:544 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- 9433 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2003-0540)Record last updated .