Security readout for executives and security teams
Plain-English summary
CVE-2011-0220 describes a crash issue in Apple Bonjour before 2011. A specially crafted multicast DNS packet could cause the service to fail. The available sources do not provide severity, affected platforms, patch identifiers, or business-impact details beyond service crash potential.
Executive priority
Prioritize as a legacy hygiene and availability risk, not an emergency, unless critical business services still depend on pre-2011 Bonjour. The main concern is service disruption from outdated software with sparse public detail.
Technical view
The CVE record states Apple Bonjour before 2011 can crash when processing a crafted multicast DNS packet. No CVSS, CWE, vulnerable code path, exploitability details, or fixed version mapping is provided in the supplied sources.
Likely exposure
Exposure is most plausible on legacy systems still running Apple Bonjour or mDNSResponder from before 2011. The sources do not specify operating systems, package versions, default configurations, or whether remote exposure extends beyond multicast DNS reachability.
Exploitation context
The bundle does not show CISA KEV listing, public exploitation, exploit availability, or in-the-wild activity. Treat this as a documented denial-of-service condition with incomplete public evidence rather than a confirmed active threat.
Researcher notes
The public record is unusually thin: description, affected product, and one Apple open-source reference. No CVSS, CWE, patch advisory, affected platform list, or exploit status is provided. Avoid extrapolating beyond a crash via crafted multicast DNS packet.
Mitigation direction
- Inventory systems running Apple Bonjour or mDNSResponder.
- Check Apple or vendor guidance for supported fixed versions.
- Upgrade or remove legacy pre-2011 Bonjour where possible.
- Restrict multicast DNS to trusted network segments where operationally feasible.
- Monitor affected hosts for repeated Bonjour or mDNSResponder crashes.
Validation and detection
- Confirm whether any hosts run Bonjour or mDNSResponder before 2011.
- Review asset records for legacy Apple or third-party Bonjour installs.
- Check network segments where multicast DNS is allowed.
- Review crash logs for Bonjour or mDNSResponder failures.
- Document uncertainty where exact version evidence is unavailable.
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-2011-0220 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://opensource.apple.com/source/mDNSResponder/mDNSResponder-541/mDNSPosix/ReadMe.txtCVE 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.