RHSA-2020:4490: Red Hat Security Advisory: gnupg2 security, bug fix, and enhancement update

An update for gnupg2 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.The GNU Privacy Guard (GnuPG or GPG) is a tool for encrypting data and creating digital signatures, compliant with OpenPGP and S/MIME standards. The following packages have been upgraded to a later upstream version: gnupg2 (2.2.20). (BZ#1663944) Security Fix(es):

• GnuPG: interaction between the sks-keyserver code and GnuPG allows for a Certificate Spamming Attack which leads to persistent DoS (CVE-2019-13050) 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. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.3 Release Notes linked from the References section. Related CVEs:
• CVE-2018-1000858: gnupg2: Cross site request forgery in dirmngr resulting in an information disclosure or denial of service
• CVE-2019-13050: GnuPG: interaction between the sks-keyserver code and GnuPG allows for a Certificate Spamming Attack which leads to persistent DoS