Security readout for executives and security teams
Plain-English summary
CVE-2011-4609 is an availability issue in glibc's RPC implementation before 2.15. A remote attacker could create many RPC connections and consume CPU, potentially slowing or disrupting affected services. The provided sources do not indicate data theft, code execution, or confirmed active exploitation.
Executive priority
Handle as a legacy exposure and availability risk. It is not described as code execution, but affected exposed RPC services could be disrupted. Prioritize environments where older systems support critical operations or are reachable from untrusted networks.
Technical view
The issue is in svc_run within glibc's RPC implementation before version 2.15. The documented impact is denial of service through CPU consumption when handling a large number of RPC connections. No CVSS vector, CWE, patch detail, or affected distribution matrix is provided in the bundle.
Likely exposure
Exposure is most plausible on older Linux systems running glibc before 2.15 with RPC-based services reachable over a network. Systems without exposed RPC services, or systems on supported glibc versions, are less likely to be affected.
Exploitation context
The CVE describes remote denial of service, but the bundle does not cite public exploitation, CISA KEV listing, exploit maturity, or observed attacks. Treat exploitation status as unconfirmed from the provided evidence.
Researcher notes
The source data is sparse: affected product entries are not normalized, CVSS and CWE are absent, and the only specific technical claim is CPU-consumption denial of service in svc_run before glibc 2.15. Avoid assuming distribution-specific fixes without vendor confirmation.
Mitigation direction
- Inventory systems running glibc before 2.15.
- Identify hosts exposing RPC-based services to networks.
- Check vendor advisories for supported fixed packages.
- Restrict network access to RPC services where possible.
- Prioritize upgrades for internet-facing or critical hosts.
Validation and detection
- Confirm glibc version on potentially exposed systems.
- Map reachable RPC services and trust boundaries.
- Review vendor package changelogs for CVE-2011-4609 coverage.
- Check monitoring for abnormal CPU spikes tied to RPC traffic.
- Document exceptions where legacy glibc remains required.
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-2011-4609 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://bugzilla.redhat.com/show_bug.cgi?id=767299CVE 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.