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.
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
|Base Score:||9.1||Base Metrics:||AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H|
|Access Vector:||Network||Attack Complexity:||Low|
|Privileges Required:||None||User Interaction:||None|
|Integrity Impact:||None||Availability Impact:||High|
|Oracle Linux version 7 (nspr)||ELSA-2020-4076||2020-10-08|
|Oracle Linux version 7 (nss)||ELSA-2020-4076||2020-10-08|
|Oracle Linux version 7 (nss-softokn)||ELSA-2020-4076||2020-10-08|
|Oracle Linux version 7 (nss-util)||ELSA-2020-4076||2020-10-08|
|Oracle Linux version 8 (nss)||ELSA-2021-0538||2021-02-17|
This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team