Bug 2269567 (CVE-2024-2467)

Summary:	CVE-2024-2467 perl-Crypt-OpenSSL-RSA: side-channel attack in PKCS#1 v1.5 padding mode (Marvin Attack)
Product:	[Other] Security Response	Reporter:	Mauro Matteo Cascella <mcascell>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A timing-based side-channel flaw exists in the perl-Crypt-OpenSSL-RSA package, which could be sufficient to recover plaintext across a network in a Bleichenbacher-style attack. To achieve successful decryption, an attacker would have to be able to send a large number of trial messages. The vulnerability affects the legacy PKCS#1v1.5 RSA encryption padding mode.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2269568
Bug Blocks:	2269569

Description Mauro Matteo Cascella 2024-03-14 17:37:40 UTC

A timing based side-channel exists in the perl-Crypt-OpenSSL-RSA package which could be sufficient to recover a plaintext across a network in a Bleichenbacher style attack. To achieve successful decryption an attacker would have to be able to send a large number of trial messages for decryption. The vulnerability affects the legacy PKCS#1v1.5 RSA encryption padding mode.

References:
https://people.redhat.com/~hkario/marvin/
https://github.com/toddr/Crypt-OpenSSL-RSA/issues/42

Comment 1 Mauro Matteo Cascella 2024-03-14 17:38:17 UTC

Created perl-Crypt-OpenSSL-RSA tracking bugs for this issue:

Affects: fedora-all [bug 2269568]