F5-K000132943: Medium severity f5 big-ip and big-iq centralized management vulnerability
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. (CVE-2022-4304 )
Affected Software
Event History
Frequently Asked Questions
What is the severity of F5-K000132943?
The severity of F5-K000132943 is classified as critical due to its potential for successful information recovery through a timing-based attack.
How do I fix F5-K000132943?
To fix F5-K000132943, upgrade affected F5 BIG-IP and other related products to their respective patched versions detailed in the advisory.
Which versions of F5 products are affected by F5-K000132943?
F5-K000132943 affects multiple F5 BIG-IP versions from 14.1 to 17.1, along with BIG-IQ, F5OS-A, and Traffix SDC product lines.
What type of attack does F5-K000132943 enable?
F5-K000132943 allows attackers to perform a Bleichenbacher style attack, potentially leading to plaintext recovery over the network.
Is there a workaround for F5-K000132943?
There are no documented workarounds for F5-K000132943, and upgrading to a secure version is the recommended action.