RHSA-2021:0758: Red Hat Security Advisory: nss-softokn security update

An update for nss-softokn is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions. 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.The nss-softokn package provides the Network Security Services Softoken Cryptographic Module. Security Fix(es):

• nss: Use-after-free in sftk_FreeSession due to improper refcounting (CVE-2019-11756)
• nss: Check length of inputs for cryptographic primitives (CVE-2019-17006)
• 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. Related CVEs:
• CVE-2019-11756: nss: Use-after-free in sftk_FreeSession due to improper refcounting
• CVE-2019-17006: nss: Check length of inputs for cryptographic primitives
• CVE-2020-12403: nss: CHACHA20-POLY1305 decryption with undersized tag leads to out-of-bounds read