Vulnerability Monitor

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CVE-2022-1434

The OpenSSL 3.0 implementation of the RC4-MD5 ciphersuite incorrectly uses the AAD data as the MAC key. This makes the MAC key trivially predictable. An attacker could exploit this issue by performing a man-in-the-middle attack to modify data being sent from one endpoint to an OpenSSL 3.0 recipient such that the modified data would still pass the MAC integrity check. Note that data sent from an OpenSSL 3.0 endpoint to a non-OpenSSL 3.0 endpoint will always be rejected by the recipient and the connection will fail at that point. Many application protocols require data to be sent from the client to the server first. Therefore, in such a case, only an OpenSSL 3.0 server would be impacted when talking to a non-OpenSSL 3.0 client. If both endpoints are OpenSSL 3.0 then the attacker could modify data being sent in both directions. In this case both clients and servers could be affected, regardless of the application protocol. Note that in the absence of an attacker this bug means that an OpenSSL 3.0 endpoint communicating with a non-OpenSSL 3.0 endpoint will fail to complete the handshake when using this ciphersuite. The confidentiality of data is not impacted by this issue, i.e. an attacker cannot decrypt data that has been encrypted using this ciphersuite - they can only modify it. In order for this attack to work both endpoints must legitimately negotiate the RC4-MD5 ciphersuite. This ciphersuite is not compiled by default in OpenSSL 3.0, and is not available within the default provider or the default ciphersuite list. This ciphersuite will never be used if TLSv1.3 has been negotiated. In order for an OpenSSL 3.0 endpoint to use this ciphersuite the following must have occurred: 1) OpenSSL must have been compiled with the (non-default) compile time option enable-weak-ssl-ciphers 2) OpenSSL must have had the legacy provider explicitly loaded (either through application code or via configuration) 3) The ciphersuite must have been explicitly added to the ciphersuite list 4) The libssl security level must have been set to 0 (default is 1) 5) A version of SSL/TLS below TLSv1.3 must have been negotiated 6) Both endpoints must negotiate the RC4-MD5 ciphersuite in preference to any others that both endpoints have in common Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2).

Published

2022-05-03T16:15:18.917

Last Modified

2024-11-21T06:40:43.607

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.9 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

8.6

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-327
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application openssl openssl < 3.0.3 Yes
Application netapp active_iq_unified_manager - Yes
Application netapp clustered_data_ontap - Yes
Application netapp clustered_data_ontap_antivirus_connector - Yes
Application netapp santricity_smi-s_provider - Yes
Application netapp smi-s_provider - Yes
Application netapp snapmanager - Yes
Application netapp solidfire\,_enterprise_sds_\&_hci_storage_node - Yes
Application netapp solidfire_\&_hci_management_node - Yes
Operating System netapp a700s_firmware - Yes
Hardware netapp a700s - No
Operating System netapp h300s_firmware - Yes
Hardware netapp h300s - No
Operating System netapp h500s_firmware - Yes
Hardware netapp h500s - No
Operating System netapp h700s_firmware - Yes
Hardware netapp h700s - No
Operating System netapp h300e_firmware - Yes
Hardware netapp h300e - No
Operating System netapp h500e_firmware - Yes
Hardware netapp h500e - No
Operating System netapp h700e_firmware - Yes
Hardware netapp h700e - No
Operating System netapp h410s_firmware - Yes
Hardware netapp h410s - No
Operating System netapp aff_8300_firmware - Yes
Hardware netapp aff_8300 - No
Operating System netapp fas_8300_firmware - Yes
Hardware netapp fas_8300 - No
Operating System netapp aff_8700_firmware - Yes
Hardware netapp aff_8700 - No
Operating System netapp fas_8700_firmware - Yes
Hardware netapp fas_8700 - No
Operating System netapp aff_a400_firmware - Yes
Hardware netapp aff_a400 - No
Operating System netapp fabric-attached_storage_a400_firmware - Yes
Hardware netapp fabric-attached_storage_a400 - No
Operating System netapp a250_firmware - Yes
Hardware netapp a250 - No
Operating System netapp aff_500f_firmware - Yes
Hardware netapp aff_500f - No
Operating System netapp fas_500f_firmware - Yes
Hardware netapp fas_500f - No
References