Security readout for executives and security teams
Plain-English summary
This is an old procmail flaw where crafted configuration-file expansions could overflow memory and allow command execution. The public bundle says versions before 3.12 are affected. Business urgency depends on whether any legacy mail-processing hosts still run procmail in that version range.
Executive priority
Treat as high priority only where legacy procmail is present. For modern environments without procmail, risk is likely low. The key management action is targeted inventory, not broad emergency response.
Technical view
CVE-1999-0439 describes a buffer overflow in procmail before 3.12 involving expansions in the procmailrc configuration file. The record says remote or local attackers could execute commands. The bundle does not provide CVSS, CWE, affected CPEs, or detailed vendor remediation data.
Likely exposure
Likely limited to legacy Unix-like mail systems that still use procmail before version 3.12, especially where procmailrc rules process untrusted mail or user-controlled configuration. The source bundle does not enumerate distributions, packages, or CPEs.
Exploitation context
The provided sources state remote or local command execution is possible, but do not include exploit details. CISA KEV status is false in the bundle, so active exploitation should not be assumed from this evidence.
Researcher notes
Evidence is sparse and historical. The core technical claim is buffer overflow through procmailrc expansions before 3.12 with potential command execution. No CVSS, CWE, CPE, patch advisory, or KEV exploitation evidence is provided in the bundle.
Mitigation direction
- Inventory systems for procmail installations and versions.
- Prioritize removing or upgrading procmail versions earlier than 3.12.
- Check operating-system vendor guidance for supported package fixes.
- Review procmailrc ownership and write permissions on exposed mail systems.
Validation and detection
- Confirm whether any host runs procmail before version 3.12.
- Identify mail delivery paths that invoke procmail.
- Review procmailrc files for expansion-heavy or user-controlled rules.
- Document systems where vendor fix status is unclear.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-1999-0439 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0439CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.