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

Quick assessment

Affected
OpenSSL OpenSSL
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenSSL是Openssl团队的一个开源的能够实现安全套接层（SSLv2/v3）和安全传输层（TLSv1）协议的通用加密库。该产品支持多种加密算法，包括对称密码、哈希算法、安全散列算法等。 OpenSSL存在安全漏洞，该漏洞源于不会加密全部数据，从而导致 16 个字节的明文泄露。

AI Predicted 5.9 Difficulty: Hard EPSS 4.42% · P91

Possible ATT&CK Techniques 1 AI

T1401.002
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I. Basic Information for CVE-2022-2097

Vulnerability Information
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Vulnerability Title
AES OCB fails to encrypt some bytes
Source: CVE Program / CVE List V5
Vulnerability 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).
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
OpenSSL 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenSSL是Openssl团队的一个开源的能够实现安全套接层（SSLv2/v3）和安全传输层（TLSv1）协议的通用加密库。该产品支持多种加密算法，包括对称密码、哈希算法、安全散列算法等。 OpenSSL存在安全漏洞，该漏洞源于不会加密全部数据，从而导致 16 个字节的明文泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenSSL OpenSSL Fixed in OpenSSL 3.0.5 (Affected 3.0.0-3.0.4) -

II. Public POCs for CVE-2022-2097

# POC Description Source Link Shenlong Link
1 A script to change OpenSSL versions on Ubuntu to 1.1.1q to protect against CVE-2022-2097. https://github.com/PeterThomasAwen/OpenSSLUpgrade1.1.1q-Ubuntu POC Details
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III. Intelligence Information for CVE-2022-2097

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Vendor Advisories for CVE-2022-2097 (7)

Mailing List Discussions for CVE-2022-2097 (3)

Other References for CVE-2022-2097 (2)

IV. Related Vulnerabilities

Same product: OpenSSL
Same vendor: OpenSSL

V. Comments for CVE-2022-2097

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