vulnerability
Ubuntu: (Multiple Advisories) (CVE-2021-33560): Libgcrypt vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:P/I:N/A:N) | Jun 8, 2021 | Sep 17, 2021 | Apr 16, 2026 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
Jun 8, 2021
Added
Sep 17, 2021
Modified
Apr 16, 2026
Description
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.
Solutions
ubuntu-pro-upgrade-libgcrypt20ubuntu-upgrade-libgcrypt20
Rapid7 Labs
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