Security readout for executives and security teams
CVE-2013-4223 is a Gentoo packaging issue for Nullmailer where a configuration file containing SMTP authentication credentials could be readable by any local user. The business risk is credential exposure that could enable unauthorized email relay or account misuse. The source bundle does not show remote exploitation or active exploitation evidence. Exposure is likely limited to Gentoo systems running the Nullmailer package before 1.11-r2, especially multi-user hosts or systems where untrusted local processes run. The source bundle’s affected-product fields are incomplete, so validate against package inventory rather than assuming broader Nullmailer exposure. Treat this as a targeted remediation item, not an internet-wide emergency. Prioritize multi-user Gentoo hosts and systems storing reusable SMTP credentials. The main business concern is exposed mail credentials, potential spam relay, and reputational damage if those credentials were abused. Mitigation focus: Upgrade Gentoo Nullmailer to 1.11-r2 or later.; Ensure /etc/nullmailer/remotes is not world-readable.; Check Gentoo bug and vendor guidance for exact package remediation..
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-2013-4223 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
- nullmailer-cve20134223-insecure-permissions(86384)CVE reference · vdb-entry, x_refsource_XF
- https://bugs.gentoo.org/show_bug.cgi?id=480376CVE reference · x_refsource_CONFIRM
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.