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.
CVSS Details
- CVSS 3.1 Base Score: 9.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade nss-softoknUpgrade nss-toolsUpgrade nss-util-develUpgrade nss-softokn-develUpgrade nssUpgrade nss-utilUpgrade nss-develUpgrade nss-sysinitUpgrade nss-softokn-freeblUpgrade nss-softokn-freebl-devel | May 4, 2022 | May 27, 2021 |
| Alpine Linux | — | Upgrade nss | Mar 26, 2024 | May 27, 2021 |
| Amazon Linux Ami 2 | — | Upgrade nss-develUpgrade nss-debuginfoUpgrade nss-pkcs11-develUpgrade nss-util-develUpgrade nss-utilUpgrade nss-util-debuginfoUpgrade nss-softokn-freebl-develUpgrade nss-sysinitUpgrade nssUpgrade nspr-develUpgrade nspr-debuginfoUpgrade nss-softoknUpgrade nss-softokn-debuginfoUpgrade nss-toolsUpgrade nsprUpgrade nss-softokn-develUpgrade nss-softokn-freebl | Nov 12, 2020 | Nov 12, 2020 |
| Amazon_linux | — | Upgrade nsprUpgrade nss-utilUpgrade nss-softokn | Jul 13, 2021 | Aug 27, 2020 |
| Centos_linux | — | Upgrade nss-util-develUpgrade nss-tools-debuginfoUpgrade nss-softoknUpgrade nssUpgrade nspr-develUpgrade nss-softokn-develUpgrade nsprUpgrade nss-softokn-freeblUpgrade nss-pkcs11-develUpgrade nss-softokn-freebl-develUpgrade nss-debugsourceUpgrade nss-softokn-debuginfoUpgrade nss-sysinitUpgrade nss-utilUpgrade nss-sysinit-debuginfoUpgrade nss-toolsUpgrade nss-softokn-freebl-debuginfoUpgrade nspr-debuginfoUpgrade nss-debuginfoUpgrade nss-develUpgrade nss-util-debuginfo | Oct 1, 2020 | Sep 29, 2020 |
| Debian | — | Upgrade nss | Oct 1, 2020 | Oct 1, 2020 |
| Gentoo Linux | — | Upgrade dev-libs/nss. | Aug 20, 2020 | Aug 19, 2020 |
| Huawei Euleros 2_0_sp8 | — | Upgrade nss-softokn-freebl-develUpgrade nss-softoknUpgrade nss-softokn-freeblUpgrade nss-softokn-devel | Dec 15, 2020 | Dec 1, 2020 |
| Huawei Euleros 2_0_sp9 | — | Upgrade nss-utilUpgrade nss-softoknUpgrade nss | Dec 1, 2020 | Dec 1, 2020 |
| Nutanix Ahv | — | Upgrade Nutanix AHV to the latest version | Jun 5, 2026 | Sep 19, 2022 |
| Oracle_linux | — | Upgrade nss-softokn-develUpgrade nss-util-develUpgrade nss-softoknUpgrade nss-sysinitUpgrade nssUpgrade nss-toolsUpgrade nss-softokn-freebl-develUpgrade nss-pkcs11-develUpgrade nsprUpgrade nspr-develUpgrade nss-utilUpgrade nss-softokn-freeblUpgrade nss-devel | Oct 9, 2020 | Jul 27, 2020 |
| Redhat_linux | — | Upgrade nss-sysinitUpgrade nss-toolsUpgrade nss-debuginfoUpgrade nss-softokn-debuginfoUpgrade nss-utilUpgrade nss-util-debuginfoNo solution existsUpgrade nss-develUpgrade nss-sysinit-debuginfoUpgrade nss-softokn-freebl-debuginfoUpgrade nss-debugsourceUpgrade nss-util-develUpgrade nss-softokn-develUpgrade nss-tools-debuginfoUpgrade nss-softokn-freeblUpgrade nspr-develUpgrade nss-softokn-freebl-develUpgrade nss-pkcs11-develUpgrade nspr-debuginfoUpgrade nsprUpgrade nss-softoknUpgrade nss | Oct 1, 2020 | Sep 29, 2020 |
| Rocky_linux | — | Upgrade nss-toolsUpgrade nss-debuginfoUpgrade nss-softokn-freeblUpgrade nss-sysinitUpgrade nss-softoknUpgrade nss-tools-debuginfoUpgrade nss-util-develUpgrade nss-softokn-develUpgrade nss-develUpgrade nss-utilUpgrade nss-softokn-freebl-develUpgrade nssUpgrade nss-softokn-freebl-debuginfoUpgrade nss-softokn-debuginfoUpgrade nss-util-debuginfoUpgrade nss-sysinit-debuginfoUpgrade nss-debugsource | Mar 12, 2024 | May 27, 2021 |
| Suse | — | Upgrade libsoftokn3Upgrade libsoftokn3-32bitUpgrade libfreebl3Upgrade mozilla-nspr-develUpgrade mozilla-nspr-32bitUpgrade mozilla-nsprUpgrade mozilla-nss-sysinit-32bitUpgrade mozilla-nss-develUpgrade mozilla-nss-sysinitUpgrade mozilla-nss-toolsUpgrade mozilla-nss-certsUpgrade mozilla-nss-certs-32bitUpgrade mozilla-nss-32bitUpgrade libfreebl3-32bitUpgrade libsoftokn3-hmacUpgrade libsoftokn3-hmac-32bitUpgrade libfreebl3-hmac-32bitUpgrade mozilla-nssUpgrade libfreebl3-hmac | Sep 17, 2021 | Aug 27, 2020 |
| Ubuntu | — | Upgrade libnss3Upgrade libnss3 (Ubuntu Pro) | Aug 28, 2020 | Aug 27, 2020 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | May 27, 2021 |
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