Astra Linux – Vulnerability in Firefox, NSS

Calling PK11Encrypt in NSS using CKMCHACHA20 and the same buffer for input and output can result in plaintext on an Intel Sandy Bridge processor. In Firefox, this only affects the QUIC header protection feature when the connection uses the ChaCha20-Poly1305 cipher suite. The most likely outcome i...

mozilla: nss: PK11_Encrypt using CKM_CHACHA20 can reveal plaintext on Intel Sandy Bridge machines

The Mozilla Foundation Security Advisory describes this flaw as: Calling PK11Encrypt in NSS using CKMCHACHA20 and the same buffer for input and output can result in plaintext on Intel Sandy Bridge and later processors. In Firefox this only affects the QUIC header protection feature when the...

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.

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AZL-6746 CVE-2020-12403 affecting package nss for versions less than 3.44-10

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...