Oracle Linux: CVE-2022-4304: ELSA-2023-0946: openssl security and bug fix update (MODERATE) (Multiple Advisories)

Oracle Linux: CVE-2022-4304: ELSA-2023-0946:openssl security and bug fix update (MODERATE) (Multiple Advisories)

Severity

5

CVSS

(AV:N/AC:H/Au:N/C:N/I:C/A:N)

Published

02/07/2023

Created

03/04/2023

Added

03/02/2023

Modified

01/07/2025

Description

A timing based side channel exists in the OpenSSL RSA Decryption implementation which could be sufficient to recover a plaintext 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. For example, in a TLS connection, RSA is commonly used by a client to send an encrypted pre-master secret to the server. An attacker that had observed a genuine connection between a client and a server could use this flaw to send trial messages to the server and record the time taken to process them. After a sufficiently large number of messages the attacker could recover the pre-master secret used for the original connection and thus be able to decrypt the application data sent over that connection. 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. This issue affects all RSA padding modes: PKCS#1 v1.5, RSA-OEAP, and RSASVE.

Solution(s)

• oracle-linux-upgrade-aavmf
• oracle-linux-upgrade-edk2-aarch64
• oracle-linux-upgrade-edk2-ovmf
• oracle-linux-upgrade-edk2-tools
• oracle-linux-upgrade-edk2-tools-doc
• oracle-linux-upgrade-openssl
• oracle-linux-upgrade-openssl-debugsource
• oracle-linux-upgrade-openssl-devel
• oracle-linux-upgrade-openssl-libs
• oracle-linux-upgrade-openssl-perl
• oracle-linux-upgrade-openssl-static
• oracle-linux-upgrade-ovmf

References

• https://attackerkb.com/topics/cve-2022-4304
• CVE - 2022-4304
• ELSA-2023-0946
• ELSA-2023-13024
• ELSA-2023-32790
• ELSA-2023-2165
• ELSA-2023-12213
• ELSA-2023-32791
• ELSA-2023-2932
• ELSA-2023-13027
• ELSA-2023-12152
• ELSA-2023-13026
• ELSA-2023-13025
• ELSA-2023-1405

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