Use of a Broken or Risky Cryptographic Algorithm Affecting libgcrypt package, versions <0:1.8.5-6.el8
Snyk CVSS
Attack Complexity
Low
Confidentiality
High
Threat Intelligence
EPSS
0.24% (62nd
percentile)
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Test your applications- Snyk ID SNYK-CENTOS8-LIBGCRYPT-2147651
- published 26 Jul 2021
- disclosed 2 Jun 2021
Introduced: 2 Jun 2021
CVE-2021-33560 Open this link in a new tabHow to fix?
Upgrade Centos:8
libgcrypt
to version 0:1.8.5-6.el8 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libgcrypt
package and not the libgcrypt
package as distributed by Centos
.
See How to fix?
for Centos:8
relevant fixed versions and status.
Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP.
References
- https://access.redhat.com/security/cve/CVE-2021-33560
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/
- https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61
- https://dev.gnupg.org/T5305
- https://dev.gnupg.org/T5328
- https://dev.gnupg.org/T5466
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html
- https://access.redhat.com/errata/RHSA-2021:4409
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://security.gentoo.org/glsa/202210-13
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/