What’s Vulnerable › Vulnerabilities

CVE-2022-2097: AES OCB fails to encrypt some bytes

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-07-05 · updated 2026-10-14
• Weakness: CWE-327

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).

Affected products

• Debian Linux: 10.0, 11.0
• Fedoraproject Fedora: 35, 36
• Active IQ Unified Manager for VMware vSphere, Linux, and Microsoft Windows: all versions
• NetApp Clustered Data Ontap Antivirus Connector: all versions
• NetApp H300S Firmware: all versions
• NetApp H410C Firmware: all versions
• NetApp H410S Firmware: all versions
• NetApp H500S Firmware: all versions
• NetApp H700S Firmware: all versions
• OpenSSL: from 1.1.1 before 1.1.1q; from 3.0.0 before 3.0.5 — fixed in 1.1.1q, 3.0.5
• Siemens SINEC INS: before 1.0; 1.0, 1.0-sp1, 1.0-sp2 — fixed in 1.0

How to fix

Upgrade to a fixed version: OpenSSL 1.1.1q, 3.0.5; Siemens SINEC INS 1.0. Check the vendor advisory for mitigations.

References

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

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