MGASA-2021-0446 - Updated libgcrypt packages fix security vulnerability

Publication date: 29 Sep 2021
URL: https://advisories.mageia.org/MGASA-2021-0446.html
Type: security
Affected Mageia releases: 8
CVE: CVE-2021-40528

The updated packages fix a security vulnerability:

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 (CVE-2021-40528).

References:
- https://bugs.mageia.org/show_bug.cgi?id=29467
- https://ubuntu.com/security/notices/USN-5080-1
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40528

SRPMS:
- 8/core/libgcrypt-1.8.7-1.2.mga8

Mageia 2021-0446: libgcrypt security update

The updated packages fix a security vulnerability: The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptogra...

Summary

The updated packages fix a security vulnerability:
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 (CVE-2021-40528).

References

- https://bugs.mageia.org/show_bug.cgi?id=29467

- https://ubuntu.com/security/notices/USN-5080-1

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40528

Resolution

MGASA-2021-0446 - Updated libgcrypt packages fix security vulnerability

SRPMS

- 8/core/libgcrypt-1.8.7-1.2.mga8

Severity
Publication date: 29 Sep 2021
URL: https://advisories.mageia.org/MGASA-2021-0446.html
Type: security
CVE: CVE-2021-40528

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