Vulnerability CVE-2020-12403: Information
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.
Severity: CRITICAL (9.1) Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Fixed packages
Package name | Branch | Fixed in version | Version from repository | Errata ID | Task # | State |
|---|---|---|---|---|---|---|
| nss | sisyphus | 3.55.0-alt1 | 3.99-alt1 | ALT-PU-2020-2482-1 | 255566 | Fixed |
| nss | p10 | 3.55.0-alt1 | 3.93.0-alt1 | ALT-PU-2020-2482-1 | 255566 | Fixed |
| nss | p9 | 3.56.0-alt1 | 3.86-alt1 | ALT-PU-2020-2932-1 | 254920 | Fixed |
| nss | c10f1 | 3.55.0-alt1 | 3.92.0-alt1 | ALT-PU-2020-2482-1 | 255566 | Fixed |
| nss | c9f2 | 3.61.0-alt1 | 3.98-alt1 | ALT-PU-2021-1367-1 | 264611 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1868931 |
|
| https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.55_release_notes |
|
| [debian-lts-announce] 20230220 [SECURITY] [DLA 3327-1] nss security update | |
| https://security.netapp.com/advisory/ntap-20230324-0006/ |