CVE-2021-33560
- Source
- https://cve.org/CVERecord?id=CVE-2021-33560
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-33560.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-33560
- Downstream
- Related
- Published
- 2021-06-08T11:15:07.767Z
- Modified
- 2026-02-04T21:34:09.939140Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
- Summary
- [none]
- Details
-
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://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/
- https://dev.gnupg.org/T5305
- https://dev.gnupg.org/T5328
- https://dev.gnupg.org/T5466
- https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61
- https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html
- https://security.gentoo.org/glsa/202210-13
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html