CVE-2022-2097

AES OCB fails to encrypt some bytes

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).

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.55%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org Vendor Advisory debian.org Vendor Advisory openssl.org
Affected: OpenSSL OpenSSL
Published at:
Updated at:

References

Link Tags
https://www.openssl.org/news/secadv/20220705.txt vendor advisory
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=a98f339ddd7e8f487d6e0088d4a9a42324885a93
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=919925673d6c9cfed3c1085497f5dfbbed5fc431
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V6567JERRHHJW2GNGJGKDRNHR7SNPZK7/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R6CK57NBQFTPUMXAPJURCGXUYT76NQAK/ vendor advisory
https://security.netapp.com/advisory/ntap-20220715-0011/ third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VCMNWKERPBKOEBNL7CLTTX3ZZCZLH7XA/ vendor advisory
https://security.gentoo.org/glsa/202210-02 third party advisory vendor advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-332410.pdf third party advisory
https://www.debian.org/security/2023/dsa-5343 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2023/02/msg00019.html third party advisory mailing list
https://security.netapp.com/advisory/ntap-20230420-0008/
https://security.netapp.com/advisory/ntap-20240621-0006/

Frequently Asked Questions

What is the severity of CVE-2022-2097?
CVE-2022-2097 has been scored as a medium severity vulnerability.
How to fix CVE-2022-2097?
To fix CVE-2022-2097, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-2097 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-2097 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-2097?
CVE-2022-2097 affects OpenSSL OpenSSL.
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