Home/CVE/An issue was discovered in Wind River VxWorks before 6.5. There is a possible heap overflow in dhcp client.
CVE

CVE-2021-29998

An issue was discovered in Wind River VxWorks before 6.5. There is a possible heap overflow in dhcp client.

An issue was discovered in Wind River VxWorks before 6.5. There is a possible heap overflow in dhcp client.

CRITICAL · CVSS 9.8 EPSS 0.00812
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-787Out-of-bounds Write
▤

Affected Products & Versions

36
windriver vxworks< 6.5
siemens ruggedcom win subscriber station firmwareall versions
siemens scalance x200-4 p irt firmwareall versions
siemens scalance x201-3p irt firmwareall versions
siemens scalance x201-3p irt pro firmwareall versions
siemens scalance x202-2 irt firmwareall versions
siemens scalance x202-2p irt firmwareall versions
siemens scalance x202-2p irt pro firmwareall versions
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 Apr 2021 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

4
siemens-csafSSA-910883
siemens-csafSSA-560465
cisa-csafcisa-csaf-csaf_files-OT-white-2021-icsa-21-194-12
cisa-csafcisa-csaf-csaf_files-OT-white-2022-icsa-22-102-02
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://cert-portal.siemens.com/productcert/pdf/ssa-560465.pdfThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-910883.pdfThird Party Advisory
https://support2.windriver.com/index.php?page=security-noticesVendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-194-12Third Party AdvisoryUS Government Resource
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