RedHat: RHSA-2021-0620:01 Important: stunnel security update
Summary
Stunnel is a wrapper for network connections. It can be used to tunnel an
unencrypted network connection over an encrypted connection (encrypted
using SSL or TLS) or to provide an encrypted means of connecting to
services that do not natively support encryption.
Security Fix(es):
* stunnel: client certificate not correctly verified when redirect and
verifyChain options are used (CVE-2021-20230)
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.
Summary
Solution
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
References
https://access.redhat.com/security/cve/CVE-2021-20230 https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux BaseOS EUS (v. 8.1):
Source:
stunnel-5.48-6.el8_1.src.rpm
aarch64:
stunnel-5.48-6.el8_1.aarch64.rpm
stunnel-debuginfo-5.48-6.el8_1.aarch64.rpm
stunnel-debugsource-5.48-6.el8_1.aarch64.rpm
ppc64le:
stunnel-5.48-6.el8_1.ppc64le.rpm
stunnel-debuginfo-5.48-6.el8_1.ppc64le.rpm
stunnel-debugsource-5.48-6.el8_1.ppc64le.rpm
s390x:
stunnel-5.48-6.el8_1.s390x.rpm
stunnel-debuginfo-5.48-6.el8_1.s390x.rpm
stunnel-debugsource-5.48-6.el8_1.s390x.rpm
x86_64:
stunnel-5.48-6.el8_1.x86_64.rpm
stunnel-debuginfo-5.48-6.el8_1.x86_64.rpm
stunnel-debugsource-5.48-6.el8_1.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
Topic
An update for stunnel is now available for Red Hat Enterprise Linux 8.1Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux BaseOS EUS (v. 8.1) - aarch64, ppc64le, s390x, x86_64
Bugs Fixed
1925226 - CVE-2021-20230 stunnel: client certificate not correctly verified when redirect and verifyChain options are used