| Name | CVE-2020-12403 |
| Description | A flaw was found in the way CHACHA20-POLY1305 was implemented in NSS in versions before 3.55. When using multi-part Chacha20, it could cause out-of-bounds reads. This issue was fixed by explicitly disabling multi-part ChaCha20 (which was not functioning correctly) and strictly enforcing tag length. The highest threat from this vulnerability is to confidentiality and system availability. |
| 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-2388-1, DLA-3327-1, ELA-273-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| nss (PTS) | jessie, jessie (lts) | 2:3.26-1+debu8u17 | fixed |
| stretch (security) | 2:3.26.2-1.1+deb9u5 | fixed | |
| stretch (lts), stretch | 2:3.26.2-1.1+deb9u6 | fixed | |
| buster | 2:3.42.1-1+deb10u5 | vulnerable | |
| buster (security) | 2:3.42.1-1+deb10u6 | fixed | |
| bullseye (security), bullseye | 2:3.61-1+deb11u3 | fixed | |
| bookworm | 2:3.87.1-1 | fixed | |
| sid, trixie | 2:3.92-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| nss | source | jessie | 2:3.26-1+debu8u13 | ELA-273-1 | ||
| nss | source | stretch | 2:3.26.2-1.1+deb9u2 | DLA-2388-1 | ||
| nss | source | buster | 2:3.42.1-1+deb10u6 | DLA-3327-1 | ||
| nss | source | (unstable) | 2:3.55-1 |
https://hg.mozilla.org/projects/nss/rev/f282556e6cc7715f5754aeaadda6f902590e7e38
https://hg.mozilla.org/projects/nss/rev/c25adfdfab34ddb08d3262aac3242e3399de1095
https://bugzilla.mozilla.org/show_bug.cgi?id=1636771
https://bugzilla.redhat.com/show_bug.cgi?id=1868931