CVE-2021-36773
CVSS V2 Medium 5
CVSS V3 High 7.5
Description
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).
Overview
- CVE ID
- CVE-2021-36773
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-07-18T04:15:08
- Last Modified Date
- 2023-01-20T02:12:26
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:sciruby:nmatrix:*:*:*:*:*:*:*:* | 1 | OR | 4.4.9 | |
| cpe:2.3:a:ublockorigin:ublock_origin:*:*:*:*:*:*:*:* | 1 | OR | 1.36.2 | |
| cpe:2.3:a:umatrix_project:umatrix:*:*:*:*:*:*:*:* | 1 | OR | 1.4.2 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| 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 | |
| https://news.ycombinator.com/item?id=27833752 | Issue Tracking Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-36773 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36773 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 15:52:31 | Added to TrackCVE | |||
| 2022-12-05 06:23:46 | 2021-07-18T04:15Z | 2021-07-18T04:15:08 | CVE Published Date | updated |
| 2022-12-05 06:23:47 | 2022-06-30T00:15:07 | CVE Modified Date | updated | |
| 2022-12-05 06:23:47 | Undergoing Analysis | Vulnerability Status | updated | |
| 2022-12-05 06:23:51 | References | updated | ||
| 2023-01-20 03:12:23 | 2023-01-20T02:12:26 | CVE Modified Date | updated | |
| 2023-01-20 03:12:23 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |