CVE-2022-30065: A use-after-free in Busybox 1.35-x's awk applet leads to denial of service and possibly code execution when...
A use-after-free in Busybox 1.35-x's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the copyvar function.
Security readout for executives and security teams
Plain-English summary
BusyBox 1.35-x has a memory safety flaw in its awk applet. A crafted awk pattern can crash the process and may allow code execution. The published score is high, but the source data indicates local access and user interaction are required.
Executive priority
Prioritize inventory and vendor update checks for embedded and appliance estates. Business urgency is highest where BusyBox awk can process user-controlled input or where vulnerable firmware supports critical operations.
Technical view
CVE-2022-30065 is a CWE-416 use-after-free in BusyBox awk, specifically in copyvar while processing a crafted awk pattern. The CVSS 3.1 vector is 7.8 high: local attack vector, low complexity, no privileges, user interaction required, with high confidentiality, integrity, and availability impact.
Likely exposure
Most relevant exposure is embedded Linux, appliances, firmware, or systems carrying BusyBox 1.35-x where the awk applet processes untrusted or user-controlled awk patterns. The provided affected-product metadata is incomplete and lists no CPEs.
Exploitation context
The bundle does not show CISA KEV listing or confirmed active exploitation. Exploitation requires a crafted awk pattern and user interaction under the published CVSS vector. Treat code execution as possible, not proven by the supplied evidence.
Researcher notes
Evidence is thin on exact affected products and fixes. The strongest facts are the CVE description, CVSS vector, CWE-416 classification, BusyBox bug reference, and Siemens advisory reference. Do not claim remote exploitability or active exploitation from this bundle.
Mitigation direction
Inventory systems and firmware for BusyBox 1.35-x and enabled awk applet usage.
Check BusyBox and vendor advisories for confirmed fixed versions or firmware updates.
Apply vendor-provided updates when available.
Avoid processing untrusted awk patterns with BusyBox awk.
Review Siemens advisory applicability for Siemens-managed environments.
Validation and detection
Confirm BusyBox version and compiled applets on affected assets.
Identify scripts or services that invoke BusyBox awk on external input.
Check SBOMs, firmware manifests, and appliance advisories for BusyBox 1.35-x.
Verify vendor remediation status before closing findings.
Document any compensating controls limiting local interactive access.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
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.
cwe · low confidence lookup
CWE-416: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
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.
1CVSS vectors
3Timeline events
2ADP providers
3Source links
SSVC decision data
CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total
CVSS vector scores
1 official score
We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-416 · source CWE mapping
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.