CVE Vulnerability

CVE-2021-36773

uBlock Origin before 1.36.2 and nMatrix before 4.4.9 support an arbitrary depth of parameter nesting for strict blocking, which allows crafted web sites to cause a denial of service (unbounded recursion that can trigger memory consumption and a loss of all blocking functionality).

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://news.ycombinator.com/item?id=27833752 Issue Tracking Third Party Advisory
https://github.com/vtriolet/writings/blob/main/posts/2021/ublock_origin_and_umatrix_denial_of_service.adoc Exploit Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/06/msg00024.html Mailing List Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:sciruby:nmatrix:*:*:*:*:*:*:*:*
cpe:2.3:a:ublockorigin:ublock_origin:*:*:*:*:*:*:*:*
cpe:2.3:a:umatrix_project:umatrix:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Information

Published : 2021-07-18 04:15

Updated : 2023-01-20 02:12

NVD link : CVE-2021-36773

Mitre link : CVE-2021-36773

Products Affected
No products.
CWE
CWE-674

Uncontrolled Recursion