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CVE Record

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.

HighCVSS 7.8Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

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.
Prepared
Confidence
medium
Sources
4

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.

Open ATT&CK lookup
description · low confidence lookup

Execution behavior lookup

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.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2022-30065 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Official CVE source material

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.

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.

ScoreVersionSeverityVectorExploitImpactSource
7.8CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

7.8High
CVSS 3.1 vector shape for CVE-2022-30065Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

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.