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
n/a · n/a
7.8HighCVSS 3.1
Recommended action
Within 7 days
High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.
Patch available
Direct vendor intelligence
Authoritative vendor CSAF and VEX advisories
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
4 current
SSA-831302 · CSAF 2.0 · revision 5 · interimSiemens ProductCERTSSA-831302: Vulnerabilities in the BIOS of the SIMATIC S7-1500 TM MFP before V1.3.0
1 known affected
The vendor explicitly identifies these products as affected by this CVE.
SIMATIC S7-1500 TM MFP - BIOS
Summary
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.
Remediation
Update to V1.3.0 or later version
SSA-558014 · CSAF 2.0 · revision 1 · interimSiemens ProductCERTSSA-558014: Third-Party Component Vulnerabilities in SCALANCE XCM332 before V2.2
1 known affected
The vendor explicitly identifies these products as affected by this CVE.
SCALANCE XCM332 (6GK5332-0GA01-2AC2)
Summary
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.
Remediation
Update to V2.2 or later version
SSA-419740 · CSAF 2.0 · revision 1 · finalSiemens ProductCERTSSA-419740: Multiple Third-Party Component Vulnerabilities in RUGGEDCOM and SCALANCE Products before V7.2
20 known affected
The vendor explicitly identifies these products as affected by this CVE.
RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2)
RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2)
SCALANCE M804PB (6GK5804-0AP00-2AA2)
SCALANCE M812-1 ADSL-Router (Annex A) (6GK5812-1AA00-2AA2)
SCALANCE M812-1 ADSL-Router (Annex B) (6GK5812-1BA00-2AA2)
SCALANCE M816-1 ADSL-Router (Annex A) (6GK5816-1AA00-2AA2)
SCALANCE M816-1 ADSL-Router (Annex B) (6GK5816-1BA00-2AA2)
SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2)
SCALANCE M874-2 (6GK5874-2AA00-2AA2)
SCALANCE M874-3 (6GK5874-3AA00-2AA2)
SCALANCE M876-3 (EVDO) (6GK5876-3AA02-2BA2)
SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2)
Summary
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.
Remediation
Update to V7.2 or later version
SSA-333517 · CSAF 2.0 · revision 1 · finalSiemens ProductCERTSSA-333517: Multiple Vulnerabilities in SCALANCE SC-600 Family before V3.0
6 known affected
The vendor explicitly identifies these products as affected by this CVE.
SCALANCE SC622-2C (6GK5622-2GS00-2AC2)
SCALANCE SC626-2C (6GK5626-2GS00-2AC2)
SCALANCE SC632-2C (6GK5632-2GS00-2AC2)
SCALANCE SC636-2C (6GK5636-2GS00-2AC2)
SCALANCE SC642-2C (6GK5642-2GS00-2AC2)
SCALANCE SC646-2C (6GK5646-2GS00-2AC2)
Summary
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.
Remediation
Update to V3.0 or later version
Optional official sources
National CERT insights ?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.
Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.
Official European source
ENISA European Vulnerability Database
Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.
1 current
ENISA EUVD identifier
EUVD-2022-35279
No EUVD known-exploited evidence
ENISA has published the identifier mapping but no EUVD description has been stored yet.
EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days
High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.
Patch available
01
What, why and how
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.
What
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.
Why
The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.
How
An attacker operating through local access may attempt exploitation without authentication after a user interaction. If successful, the issue may disrupt the affected service.
What
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.
Why
The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.
How
An attacker operating through local access may attempt exploitation without authentication after a user interaction. If successful, the issue may disrupt the affected service.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation ?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No confirmed evidence
No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
Public PoC / exploit material ?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.Reference recorded
A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.
Likely attack path
local access → Use After Free → disrupt the affected service
Attack surface
Local
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness ?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-416: Use After Free. The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.
CVSS vector ?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
UnauthenticatedDenial of serviceCWE-416Public exploit reference
A
Official authority intelligence
Only matched European and national findings are included. Language selectors and unavailable sources are omitted.
ENISA EUVD · EUVD-2022-35279Official EUVD mapping
0 linked advisory records.
Official EUVD record ↗BSI · German · WID-SEC-2023-1432Siemens SIMATIC S7: Mehrere Schwachstellen
Ein Angreifer aus dem angrenzenden Netzwerk oder ein entfernter, anonymer, authentisierter, physischer oder lokaler Angreifer kann mehrere Schwachstellen in Siemens SIMATIC S7 ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand herbeizuführen, seine Privilegien zu erweitern und Daten zu manipulieren.
Official advisory ↗BSI · German · WID-SEC-2022-2211BusyBox: Schwachstelle ermöglicht Denial of Service
Ein Angreifer kann eine Schwachstelle in BusyBox ausnutzen, um einen Denial of Service Angriff durchzuführen.
Official advisory ↗Cyber Security Agency of Singapore · English · CSA-SB-20220525Security Bulletin 25 May 2022
The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 25 May 2022, published on 25 May 2022. Open the linked bulletin for the product, severity and reference information published in that issue.
Official advisory ↗CERT-FR · French · CERTFR-2024-AVI-0389Multiples vulnérabilités dans les produits Belden
De multiples vulnérabilités ont été découvertes dans les produits
Belden. Elles permettent à un attaquant de provoquer un problème de
sécurité non spécifié par l'éditeur.
Official advisory ↗CERT-FR · French · CERTFR-2023-AVI-0453Multiples vulnérabilités dans les produits Siemens
Operational remediation based on structured source evidence.
Status ?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
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 processing a crafted awk pattern in the copyvar function | BlackTree