CVE-2021-33560 log
| Source |
|
| Severity | Medium |
| Remote | Yes |
| Type | Private key recovery |
| Description | Libgcrypt 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. (There is also an interoperability problem because the selection of the k integer value does not properly consider the differences between basic ElGamal encryption and generalized ElGamal encryption.) This, for example, affects use of ElGamal in OpenPGP. |
| Group | Package | Affected | Fixed | Severity | Status | Ticket |
|---|---|---|---|---|---|---|
| AVG-2014 | lib32-libgcrypt15 | 1.5.6-5 | Medium | Vulnerable | ||
| AVG-2013 | libgcrypt15 | 1.5.6-4 | Medium | Vulnerable | ||
| AVG-2012 | lib32-libgcrypt | 1.9.2-1 | 1.9.3-1 | Medium | Fixed | |
| AVG-2011 | libgcrypt | 1.9.2-1 | 1.9.3-1 | Medium | Fixed |
| References |
|---|
https://dev.gnupg.org/T5328 https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commitdiff;h=e8b7f10be275bcedb5fc05ed4837a89bfd605c61 |