CVE-2022-1434 [Medium] | Security Vulnerability in Openssl

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).

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2023-03-07	0.95%	0.06%	-0.89%
2	2022-06-03	0.89%	0.95%	+0.07%
3	2022-05-04	—	0.89%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2023-03-07

0.95%

0.06%

-0.89%

2022-06-03

0.89%

0.95%

+0.07%

2022-05-04

—

0.89%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.9	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:H) Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:N) Service keeps running; no real outage angle.	2.2	3.6	[email protected]
4.3	2.0	MEDIUM	`AV:N/AC:M/Au:N/C:N/I:P/A:N` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:M) Exploitation needs some favorable conditions, but not exceptional ones. Authentication (AU:N) No authentication is required. Confidentiality impact (C:N) No confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:N) No availability impact.	8.6	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.9

3.1

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H): Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N): Service keeps running; no real outage angle.

2.2

3.6

[email protected]

4.3

2.0

MEDIUM

AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:M): Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:N): No confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:N): No availability impact.

8.6

2.9

[email protected]

OS Trackers for CVE-2022-1434

vendor	priority	summary	link
`alpine`	medium	CVE-2022-1434: 2 source package rows (openssl, openssl3); 18 state rows across 7 repos (3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 8, open 10.	https://security.alpinelinux.org/vuln/CVE-2022-1434
`debian`	unimportant	CVE-2022-1434 unimportant priority: Debian including 1 source packages (openssl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2022-1434
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2022-1434
`suse`	high	CVE-2022-1434 severity important: SUSE including 65 source package names (compat-openssl098, libopenssl-1_0_0-devel, …), 403 product×package rows across 58 product lines (HPE Helion OpenStack 8, SUSE CaaS Platform 4.0, … (58 product lines)): Known Not Affected 355, Fixed 48.	https://www.suse.com/security/cve/CVE-2022-1434/
`ubuntu`	low	CVE-2022-1434 low priority: Ubuntu including 4 source packages (edk2, nodejs, openssl, openssl1.0), 56 status rows across 14 suites (bionic, focal, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 30, DNE 13, released 9, needs-triage 3, needed 1.	https://ubuntu.com/security/CVE-2022-1434

Affected software / configurations for CVE-2022-1434

Vendor	Product	Version	Raw CPE
openssl	openssl	>= 3.0.0, < 3.0.3	cpe:2.3:a:openssl:openssl::::::::
netapp	active_iq_unified_manager	—	cpe:2.3:a:netapp:active_iq_unified_manager:-:::::vsphere::
netapp	clustered_data_ontap	—	cpe:2.3:a:netapp:clustered_data_ontap:-:::::::*
netapp	clustered_data_ontap_antivirus_connector	—	cpe:2.3:a:netapp:clustered_data_ontap_antivirus_connector:-:::::::*
netapp	santricity_smi-s_provider	—	cpe:2.3:a:netapp:santricity_smi-s_provider:-:::::::*
netapp	smi-s_provider	—	cpe:2.3:a:netapp:smi-s_provider:-:::::::*
netapp	snapmanager	—	cpe:2.3:a:netapp:snapmanager:-:::::hyper-v::
netapp	solidfire\,_enterprise_sds_\&_hci_storage_node	—	cpe:2.3:a:netapp:solidfire\,_enterprise_sds_\&_hci_storage_node:-:::::::*
netapp	solidfire_\&_hci_management_node	—	cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:::::::*
netapp	a700s_firmware	—	cpe:2.3:o:netapp:a700s_firmware:-:::::::*
netapp	h300s_firmware	—	cpe:2.3:o:netapp:h300s_firmware:-:::::::*
netapp	h500s_firmware	—	cpe:2.3:o:netapp:h500s_firmware:-:::::::*
netapp	h700s_firmware	—	cpe:2.3:o:netapp:h700s_firmware:-:::::::*
netapp	h300e_firmware	—	cpe:2.3:o:netapp:h300e_firmware:-:::::::*
netapp	h500e_firmware	—	cpe:2.3:o:netapp:h500e_firmware:-:::::::*
netapp	h700e_firmware	—	cpe:2.3:o:netapp:h700e_firmware:-:::::::*
netapp	h410s_firmware	—	cpe:2.3:o:netapp:h410s_firmware:-:::::::*
netapp	aff_8300_firmware	—	cpe:2.3:o:netapp:aff_8300_firmware:-:::::::*
netapp	fas_8300_firmware	—	cpe:2.3:o:netapp:fas_8300_firmware:-:::::::*
netapp	aff_8700_firmware	—	cpe:2.3:o:netapp:aff_8700_firmware:-:::::::*
netapp	fas_8700_firmware	—	cpe:2.3:o:netapp:fas_8700_firmware:-:::::::*
netapp	aff_a400_firmware	—	cpe:2.3:o:netapp:aff_a400_firmware:-:::::::*
netapp	fabric-attached_storage_a400_firmware	—	cpe:2.3:o:netapp:fabric-attached_storage_a400_firmware:-:::::::*
netapp	a250_firmware	—	cpe:2.3:o:netapp:a250_firmware:-:::::::*
netapp	aff_500f_firmware	—	cpe:2.3:o:netapp:aff_500f_firmware:-:::::::*
netapp	fas_500f_firmware	—	cpe:2.3:o:netapp:fas_500f_firmware:-:::::::*

References for CVE-2022-1434

URL	Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-953464.pdf
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=7d56a74a96828985db7354a55227a511615f732b
https://security.netapp.com/advisory/ntap-20220602-0009/	Third Party Advisory
https://www.openssl.org/news/secadv/20220503.txt	Vendor Advisory

URL

CVE-2022-1434 | Incorrect MAC key used in the RC4-MD5 ciphersuite

Exploit prediction scoring system (EPSS) score for CVE-2022-1434

Common vulnerability scoring system (CVSS) metrics for CVE-2022-1434

Weakness enumeration for CVE-2022-1434

GitHub Security Advisory for CVE-2022-1434

OS Trackers for CVE-2022-1434

Affected software / configurations for CVE-2022-1434

References for CVE-2022-1434