CVE-2021-33560
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 2.3%
exploitation probability
2.3%top 18% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
n/a · n/aReferences
https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61https://dev.gnupg.org/T5305https://dev.gnupg.org/T5328https://dev.gnupg.org/T5466https://lists.debian.org/debian-lts-announce/2021/06/msg00021.htmlhttps://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://security.gentoo.org/glsa/202210-13https://www.oracle.com/security-alerts/cpuapr2022.htmlhttps://www.oracle.com/security-alerts/cpujan2022.htmlhttps://www.oracle.com/security-alerts/cpujul2022.htmlhttps://www.oracle.com/security-alerts/cpuoct2021.html