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osvGoogleOSV:CVE-2021-33560
HistoryJun 08, 2021 - 11:15 a.m.

CVE-2021-33560

2021-06-0811:15:07
Google
osv.dev
20
libgcrypt
elgamal
encryption
vulnerability
patch
openpgp

EPSS

0.002

Percentile

61.1%

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.