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Gentoo: GLSA-202007-62 Normal: Weak Key Generation in PyCrypto

gentoo
Calendar Grey July 31, 2020
Dist Gentoo Esm H88
The GLSA 202007-62 warns of a critical flaw in PyCrypto's key generation, risking security by creating predictable keys. Attacks could compromise encryption.
A flaw in PyCrypto allow remote attackers to obtain sensitive information.

Summary

It was discovered that PyCrypto incorrectly generated ElGamal key parameters.

Topics%20covered

Topics Covered

security advisory Gentoo information leak attack key generation PyCrypto

Resolution

Gentoo has discontinued support for PyCrypto. We recommend that usersunmerge PyCrypto: # emerge --unmerge "dev-python/pycrypto"
NOTE: The Gentoo developer(s) maintaining PyCrypto have discontinued support at this time. PyCryptodome is the canonical successor to PyCrypto.

References

[ 1 ] CVE-2018-6594 https://nvd.nist.gov/vuln/detail/CVE-2018-6594

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202007-62
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: Normal
Title: PyCrypto: Weak key generation
Date: July 31, 2020
Bugs: #703682
ID: 202007-62

Topics%20covered

Topics Covered

security advisory Gentoo information leak attack key generation PyCrypto

Synopsis

A flaw in PyCrypto allow remote attackers to obtain sensitive information.

Background

PyCrypto is the Python Cryptography Toolkit.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-python/pycrypto <= 2.6.1-r2 Vulnerable! ------------------------------------------------------------------- NOTE: Certain packages are still vulnerable. Users should migrate to another package if one is available or wait for the existing packages to be marked stable by their architecture maintainers.

Impact

===== Attackers may be able to obtain sensitive information by reading ciphertext data.

Workaround

There is no known workaround at this time.

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