| Name | CVE-2021-36773 |
| 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). |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3062-1 |
| Debian Bugs | 991344, 991386 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| ublock-origin (PTS) | buster | 1.42.0+dfsg-1~deb10u1 | fixed |
| bullseye | 1.42.0+dfsg-1~deb11u1 | fixed | |
| bookworm | 1.46.0+dfsg-1 | fixed | |
| sid, trixie | 1.57.0+dfsg-1 | fixed | |
| umatrix (PTS) | buster | 1.3.16+dfsg-2 | vulnerable |
| sid | 1.4.0+dfsg-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| ublock-origin | source | stretch | 1.42.0+dfsg-1~deb9u1 | DLA-3062-1 | ||
| ublock-origin | source | buster | 1.37.0+dfsg-1~deb10u1 | |||
| ublock-origin | source | bullseye | 1.37.0+dfsg-1~deb11u1 | |||
| ublock-origin | source | (unstable) | 1.37.0+dfsg-1 | 991386 | ||
| umatrix | source | (unstable) | (unfixed) | 991344 |
[buster] - umatrix <no-dsa> (Minor issue)
https://github.com/vtriolet/writings/blob/main/posts/2021/ublock_origin_and_umatrix_denial_of_service.adoc