CPANSA-Alien-GCrypt-2021-40528-libgcrypt: Alien-GCrypt vulnerability

Publisher giterlizzi Document category csaf_security_advisory
Initial release date 2021-09-06T00:00:00 Engine CSAF Perl Toolkit 0.25
Current release date 2021-09-06T00:00:00 Build Date
Current version 1 Status final
CVSS v3.1 Base Score 5.9 Severity Medium
Original language Language en
Also referred to

Vulnerability Description

The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.

Vulnerabilities

CVE-2021-40528

Vulnerability Description

The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.

Weakness CWE-327 : Use of a Broken or Risky Cryptographic Algorithm

Product status

Known affected
Product Score
Alien-GCrypt equal =1.6.5.0
CVSS Version CVSS Vector CVSS Base Score CVSS Base Severity
3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N 5.9 Medium
2.0 AV:N/AC:H/Au:N/C:P/I:N/A:N 2.6 Low

giterlizzi

Namespace: https://github.com/giterlizzi/

gdt@cpan.org

References

Revision history

Version Date of the revision Summary of the revision
1 Mon Sep 6 00:00:00 2021 First release

Sharing rules

TLP:WHITE
For the TLP version see: https://www.first.org/tlp/