MGASA-2021-0468 - Updated libcryptopp packages fix security vulnerability

Publication date: 06 Oct 2021
URL: https://advisories.mageia.org/MGASA-2021-0468.html
Type: security
Affected Mageia releases: 8
CVE: CVE-2021-40530

The ElGamal implementation in Crypto++ through 8.5 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-2021-40530)

References:
- https://bugs.mageia.org/show_bug.cgi?id=29529
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/HGVBZ2TTRKCTYAZTRHTF6OBD4W37F5MT/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40530

SRPMS:
- 8/core/libcryptopp-8.2.0-2.1.mga8

Mageia 2021-0468: libcryptopp security update

The ElGamal implementation in Crypto++ through 8.5 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the...

Summary

The ElGamal implementation in Crypto++ through 8.5 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-2021-40530)

References

- https://bugs.mageia.org/show_bug.cgi?id=29529

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/HGVBZ2TTRKCTYAZTRHTF6OBD4W37F5MT/

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40530

Resolution

MGASA-2021-0468 - Updated libcryptopp packages fix security vulnerability

SRPMS

- 8/core/libcryptopp-8.2.0-2.1.mga8

Severity
Publication date: 06 Oct 2021
URL: https://advisories.mageia.org/MGASA-2021-0468.html
Type: security
CVE: CVE-2021-40530

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