REDHAT-BUG-2164487
First published: Wed Jan 25 2023(Updated: )
A timing based side channel exists in the OpenSSL RSA Decryption implementation which could be sufficient to recover a ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption an attacker would have to be able to send a very large number of trial messages for decryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5, RSA-OEAP and RSASVE.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| OpenSSL |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167917
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167925
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167918
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167924
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167919
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167926
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167920
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167927
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167915
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167914
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167921
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167928
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167922
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167929
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167923
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167930
- https://access.redhat.com/errata/RHSA-2023:0946
- https://access.redhat.com/errata/RHSA-2023:1199
- https://access.redhat.com/errata/RHSA-2023:1405
- https://access.redhat.com/security/cve/cve-2022-4304
- https://access.redhat.com/errata/RHSA-2023:2165
- https://access.redhat.com/errata/RHSA-2023:2932
- https://access.redhat.com/errata/RHSA-2023:3408
- https://access.redhat.com/errata/RHSA-2023:3355
- https://access.redhat.com/errata/RHSA-2023:3354
- https://access.redhat.com/errata/RHSA-2023:3420
- https://access.redhat.com/errata/RHSA-2023:3421
- https://access.redhat.com/errata/RHSA-2023:4128
- https://bugzilla.redhat.com/show_bug.cgi?id=2164487
Frequently Asked Questions
What is the severity of REDHAT-BUG-2164487?
The severity of REDHAT-BUG-2164487 is critical due to the potential for a Bleichenbacher style attack that can recover ciphertext over a network.
How do I fix REDHAT-BUG-2164487?
To fix REDHAT-BUG-2164487, users should update to the latest patched version of OpenSSL provided by their vendor.
What systems are affected by REDHAT-BUG-2164487?
REDHAT-BUG-2164487 affects systems utilizing vulnerable versions of OpenSSL that implement RSA decryption.
What kind of attack is associated with REDHAT-BUG-2164487?
REDHAT-BUG-2164487 is associated with a timing-based side channel attack known as a Bleichenbacher attack.
Can REDHAT-BUG-2164487 be exploited remotely?
Yes, REDHAT-BUG-2164487 can potentially be exploited remotely if the attacker can send numerous trial messages to the vulnerable server.
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