RedHat: RHSA-2021-4409:03 Moderate: libgcrypt security and bug fix update
Summary
The libgcrypt library provides general-purpose implementations of various
cryptographic algorithms.
Security Fix(es):
* libgcrypt: mishandles ElGamal encryption because it lacks exponent
blinding to address a side-channel attack against mpi_powm (CVE-2021-33560)
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 8.5 Release Notes linked from 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-2021-33560 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.5_release_notes/
Package List
Red Hat Enterprise Linux BaseOS (v. 8):
Source:
libgcrypt-1.8.5-6.el8.src.rpm
aarch64:
libgcrypt-1.8.5-6.el8.aarch64.rpm
libgcrypt-debuginfo-1.8.5-6.el8.aarch64.rpm
libgcrypt-debugsource-1.8.5-6.el8.aarch64.rpm
libgcrypt-devel-1.8.5-6.el8.aarch64.rpm
libgcrypt-devel-debuginfo-1.8.5-6.el8.aarch64.rpm
ppc64le:
libgcrypt-1.8.5-6.el8.ppc64le.rpm
libgcrypt-debuginfo-1.8.5-6.el8.ppc64le.rpm
libgcrypt-debugsource-1.8.5-6.el8.ppc64le.rpm
libgcrypt-devel-1.8.5-6.el8.ppc64le.rpm
libgcrypt-devel-debuginfo-1.8.5-6.el8.ppc64le.rpm
s390x:
libgcrypt-1.8.5-6.el8.s390x.rpm
libgcrypt-debuginfo-1.8.5-6.el8.s390x.rpm
libgcrypt-debugsource-1.8.5-6.el8.s390x.rpm
libgcrypt-devel-1.8.5-6.el8.s390x.rpm
libgcrypt-devel-debuginfo-1.8.5-6.el8.s390x.rpm
x86_64:
libgcrypt-1.8.5-6.el8.i686.rpm
libgcrypt-1.8.5-6.el8.x86_64.rpm
libgcrypt-debuginfo-1.8.5-6.el8.i686.rpm
libgcrypt-debuginfo-1.8.5-6.el8.x86_64.rpm
libgcrypt-debugsource-1.8.5-6.el8.i686.rpm
libgcrypt-debugsource-1.8.5-6.el8.x86_64.rpm
libgcrypt-devel-1.8.5-6.el8.i686.rpm
libgcrypt-devel-1.8.5-6.el8.x86_64.rpm
libgcrypt-devel-debuginfo-1.8.5-6.el8.i686.rpm
libgcrypt-devel-debuginfo-1.8.5-6.el8.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 libgcrypt is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64
Bugs Fixed
1970096 - CVE-2021-33560 libgcrypt: mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm
1976137 - Enable hardware optimizations in FIPS mode