CVE-2021-36773

MITRE NVD CVE.ORG Print: PDF PDF

Summary

CVECVE-2021-36773
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-07-18 04:15:00 UTC
Updated2023-01-20 02:12:00 UTC
DescriptionuBlock 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).

Risk And Classification

Problem Types: CWE-674

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 9.0 All All All
Application Sciruby Nmatrix All All All All
Application Ublockorigin Ublock Origin All All All All
Application Umatrix Project Umatrix All All All All

References

ReferenceSourceLinkTags
[SECURITY] [DLA 3062-1] ublock-origin security update MLIST lists.debian.org
uBlock Origin (and uMatrix) DoS with strict-blocking filter and crafted URL | Hacker News MISC news.ycombinator.com
writings/ublock_origin_and_umatrix_denial_of_service.adoc at main · vtriolet/writings · GitHub MISC github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 179482 Debian Security Update for ublock-origin (CVE-2021-36773)
  • 179975 Debian Security Update for ublock-origin (DLA 3062-1)
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

CVE.report and Source URL Uptime Status status.cve.report