SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2022-2097

AES OCB mode for 32-bit x86 platforms using the AES-NI assembly optimised implementation will not encrypt the entirety of the data under some circumstances.

MEDIUM 5.3EPSS 4.68%

Does this matter?

Lower severity and a low EPSS score (4.68%). Track it; it rarely justifies an emergency change on its own.

Description

AES OCB mode for 32-bit x86 platforms using the AES-NI assembly optimised implementation will not encrypt the entirety of the data under some circumstances. This could reveal sixteen bytes of data that was preexisting in the memory that wasn't written. In the special case of "in place" encryption, sixteen bytes of the plaintext would be revealed. Since OpenSSL does not support OCB based cipher suites for TLS and DTLS, they are both unaffected. Fixed in OpenSSL 3.0.5 (Affected 3.0.0-3.0.4). Fixed in OpenSSL 1.1.1q (Affected 1.1.1-1.1.1p).

CVSS 3.1
5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS
4.68% probability · 91th percentile
CISA KEV
Not listed
Weakness
CWE-327
Affected
openssl/openssl · fedoraproject/fedora · netapp/active iq unified manager · netapp/clustered data ontap antivirus connector · netapp/h300s firmware · netapp/h500s firmware · netapp/h700s firmware · netapp/h410s firmware · netapp/h410c firmware · siemens/sinec ins · debian/debian linux
Source
openssl-security@openssl.org

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.