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CVE-2023-37464— Incorrect Authentication Tag length usage in AES GCM decryption in OpenIDC/cjose

Quick assessment

Affected
OpenIDC cjose
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.

Cisco cjose是美国思科（Cisco）公司的一个用来实现 Javascript 对象签名和加密 (JOSE) 的 C 库。 cjose存在加密问题漏洞，该漏洞源于 AES GCM 解密例程错误地使用了 JWE 中提供的实际身份验证标签中的标签长度。

CVSS 8.6 · High EPSS 0.71% · P52

Possible ATT&CK Techniques 1 AI

T1562.001
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I. Basic Information for CVE-2023-37464

Vulnerability Information
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Vulnerability Title
Incorrect Authentication Tag length usage in AES GCM decryption in OpenIDC/cjose
Source: CVE Program / CVE List V5
Vulnerability Description
OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption (JOSE). The AES GCM decryption routine incorrectly uses the Tag length from the actual Authentication Tag provided in the JWE. The spec says that a fixed length of 16 octets must be applied. Therefore this bug allows an attacker to provide a truncated Authentication Tag and to modify the JWE accordingly. Users should upgrade to a version >= 0.6.2.2. Users unable to upgrade should avoid using AES GCM encryption and replace it with another encryption algorithm (e.g. AES CBC).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用已被攻破或存在风险的密码学算法
Source: CVE Program / CVE List V5
Vulnerability Title
cjose 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco cjose是美国思科（Cisco）公司的一个用来实现 Javascript 对象签名和加密 (JOSE) 的 C 库。 cjose存在加密问题漏洞，该漏洞源于 AES GCM 解密例程错误地使用了 JWE 中提供的实际身份验证标签中的标签长度。
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
OpenIDC cjose < 0.6.2.2 -

II. Public POCs for CVE-2023-37464

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 11293 chars
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III. Intelligence Information for CVE-2023-37464

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Patches & Fixes for CVE-2023-37464 (1)

Vendor Advisories for CVE-2023-37464 (1)

Mailing List Discussions for CVE-2023-37464 (3)

Other References for CVE-2023-37464 (2)

IV. Related Vulnerabilities

Same product: cjose
Same vendor: OpenIDC
Same weakness: CWE-327

V. Comments for CVE-2023-37464

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