Bug 1221446 (CVE-2024-2467)

Summary: VUL-0: CVE-2024-2467: perl-Crypt-OpenSSL-RSA: side-channel attack in PKCS#1 v1.5 padding mode (Marvin Attack)
Product: [Novell Products] SUSE Security Incidents Reporter: SMASH SMASH <smash_bz>
Component: IncidentsAssignee: Peter Varkoly <varkoly>
Status: NEW --- QA Contact: Security Team bot <security-team>
Severity: Normal    
Priority: P3 - Medium CC: rfrohl
Version: unspecified   
Target Milestone: ---   
Hardware: Other   
OS: Other   
URL: https://smash.suse.de/issue/397719/
Whiteboard: CVSSv3.1:SUSE:CVE-2024-2467:5.9:(AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
Found By: Security Response Team Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---

Description SMASH SMASH 2024-03-15 08:22:28 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:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-2467
https://bugzilla.redhat.com/show_bug.cgi?id=2269567
https://github.com/toddr/Crypt-OpenSSL-RSA/issues/42