Security readout for executives and security teams
Plain-English summary
This issue can let a remote attacker crash an NSD child server process, causing denial of service for affected DNS service. The provided sources describe availability impact, not data theft or code execution. Business urgency depends on whether vulnerable NSD is exposed for critical DNS.
Executive priority
Address promptly if affected NSD supports public or critical internal DNS. The main risk is service disruption, so urgency is lower than code execution but higher for DNS-dependent operations.
Technical view
CVE-2012-2979 affects NSD before 3.2.13 as referenced by FreeBSD, Debian, and Tenable. A remote attacker can trigger a SIGSEGV in an NSD child process, resulting in denial of service. The bundle provides no CVSS, CWE, or root-cause detail.
Likely exposure
Likely exposure is NSD deployments running versions before 3.2.13, especially internet-facing DNS services. The source bundle does not identify other affected products or platforms beyond the cited NSD/FreeBSD context.
Exploitation context
The sources describe remote denial of service. CISA KEV is false, and the supplied bundle does not confirm active exploitation. Treat exploitability as plausible from the vulnerability description, but do not assume observed attacks from these sources.
Researcher notes
The bundle lacks CVSS, CWE, patch notes, and technical root-cause details. Analysis should stay limited to remote SIGSEGV-driven denial of service in NSD before 3.2.13, with no claim of active exploitation.
Mitigation direction
- Upgrade affected NSD installations to 3.2.13 or later where applicable.
- Check FreeBSD, Debian, and vendor package guidance for supported fixed builds.
- Prioritize internet-facing or business-critical DNS servers first.
- Monitor DNS service health and crash signals until remediation is complete.
Validation and detection
- Inventory NSD installations and record package versions.
- Confirm no exposed NSD service is below 3.2.13.
- Review DNS server logs for child process crashes or SIGSEGV events.
- Use authenticated vulnerability scanning where available, such as Tenable plugin coverage.
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-2012-2979 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://security-tracker.debian.org/tracker/CVE-2012-2979CVE reference · x_refsource_MISC
- https://www.tenable.com/plugins/nessus/60150CVE reference · x_refsource_MISC
- https://vuxml.freebsd.org/freebsd/17f369dc-d7e7-11e1-90a2-000c299b62e1.htmlCVE 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.