RHSA-2021:0538: Red Hat Security Advisory: nss security and bug fix update

An update for nss is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.Network Security Services (NSS) is a set of libraries designed to support the cross-platform development of security-enabled client and server applications. Security Fix(es):

• nss: Side channel attack on ECDSA signature generation (CVE-2020-6829)
• nss: P-384 and P-521 implementation uses a side-channel vulnerable modular inversion function (CVE-2020-12400)
• nss: CHACHA20-POLY1305 decryption with undersized tag leads to out-of-bounds read (CVE-2020-12403) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Bug Fix(es):
• Support key wrap/unwrap with RSA-OAEP (BZ#1896431)
• 1536bit group from RFC3526 is allowed in FIPS mode when in policy DH-MIN is set to be lower than 1536 (BZ#1896432)
• when NSS_SDB_USE_CACHE not set, after curl access https, dentry increase but never released - consider alternative algorithm for benchmarking ACCESS call in sdb_measureAccess [rhel-8] (BZ#1896933)
• Policy should allow overriding library defaults (BZ#1898702)
• KDF-self-tests-induced changes for nss in RHEL 8.4 (BZ#1898953)
• nss: non-blocksize requests to IKEv1 KDF returns bogus output (BZ#1904408) Related CVEs:
• CVE-2020-6829: nss: Side channel attack on ECDSA signature generation
• CVE-2020-12400: nss: P-384 and P-521 implementation uses a side-channel vulnerable modular inversion function
• CVE-2020-12403: nss: CHACHA20-POLY1305 decryption with undersized tag leads to out-of-bounds read