Home/CVE/An unauthenticated attacker is able to send a special HTTP request, that causes a service to crash. In case of a standal
CVE

CVE-2021-23859

An unauthenticated attacker is able to send a special HTTP request, that causes a service to crash. In case of a standal

An unauthenticated attacker is able to send a special HTTP request, that causes a service to crash. In case of a standalone VRM or BVMS with VRM installation this crash also opens the possibility to send further unauthenticated commands to the service. On some products the interface is only local accessible lowering the CVSS base score.

For a list of modified CVSS scores, please see the official Bosch Advisory Appendix chapter Modified CVSS Scores for CVE-2021-23859.

CRITICAL · CVSS 9.1 EPSS 0.0029
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-703Improper Check or Handling of Exceptional Conditions
CWE-755Improper Handling of Exceptional Conditions
▤

Affected Products & Versions

11
bosch video management system<= 9.0
bosch video management system>= 10.0 and < 10.0.2
bosch video management systemall versions
bosch video recording manager<= 3.81
bosch video recording manager>= 3.82 and <= 3.82.0057
bosch video recording manager>= 3.83 and <= 3.83.0021
bosch video recording manager>= 4.0 and <= 4.00.0070
bosch access easy controller firmware<= 2.9.1.0
▣

Scoring & Timeline

9.1
CRITICAL · CVSS v3.1 · psirt@bosch.com
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 NVD08 Dec 2021 · 10:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://psirt.bosch.com/security-advisories/bosch-sa-043434-bt.htmlVendor Advisory
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