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CVE-2022-3602— X.509 Email Address 4-byte Buffer Overflow

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 3.0.0 到 3.0.6版本存在安全漏洞，该漏洞源于在 X.509 证书验证中可以触发缓冲区溢出，特别是在名称约束检查中，攻击者利用该漏洞可以导致服务崩溃（导致拒绝服务）或潜在的远程代码执行。

AI Predicted 8.1 Difficulty: Moderate EPSS 90.77% · P100
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I. Basic Information for CVE-2022-3602

Vulnerability Information
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Vulnerability Title
X.509 Email Address 4-byte Buffer Overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed the malicious certificate or for the application to continue certificate verification despite failure to construct a path to a trusted issuer. An attacker can craft a malicious email address to overflow four attacker-controlled bytes on the stack. This buffer overflow could result in a crash (causing a denial of service) or potentially remote code execution. Many platforms implement stack overflow protections which would mitigate against the risk of remote code execution. The risk may be further mitigated based on stack layout for any given platform/compiler. Pre-announcements of CVE-2022-3602 described this issue as CRITICAL. Further analysis based on some of the mitigating factors described above have led this to be downgraded to HIGH. Users are still encouraged to upgrade to a new version as soon as possible. In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects. Fixed in OpenSSL 3.0.7 (Affected 3.0.0,3.0.1,3.0.2,3.0.3,3.0.4,3.0.5,3.0.6).
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 缓冲区错误漏洞
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 3.0.0 到 3.0.6版本存在安全漏洞，该漏洞源于在 X.509 证书验证中可以触发缓冲区溢出，特别是在名称约束检查中，攻击者利用该漏洞可以导致服务崩溃（导致拒绝服务）或潜在的远程代码执行。
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 3.0.7 (Affected 3.0.0,3.0.1,3.0.2,3.0.3,3.0.4,3.0.5,3.0.6) -

II. Public POCs for CVE-2022-3602

# POC Description Source Link Shenlong Link
1 Operational information regarding CVE-2022-3602 and CVE-2022-3786, two vulnerabilities in OpenSSL 3 https://github.com/NCSC-NL/OpenSSL-2022 POC Details
2 None https://github.com/colmmacc/CVE-2022-3602 POC Details
3 None https://github.com/eatscrayon/CVE-2022-3602-poc POC Details
4 cve-2022-3602 poc https://github.com/attilaszia/cve-2022-3602 POC Details
5 SpookySSL CVE-2022-3602 SSLv3 Scanner for Windows, Linux, macOS https://github.com/alicangnll/SpookySSL-Scanner POC Details
6 None https://github.com/rbowes-r7/cve-2022-3602-and-cve-2022-3786-openssl-poc POC Details
7 Detects attempts at exploitation of CVE-2022-3602, a remote code execution vulnerability in OpenSSL v 3.0.0 through v.3.0.6 https://github.com/corelight/CVE-2022-3602 POC Details
8 None https://github.com/cybersecurityworks553/CVE-2022-3602-and-CVE-2022-3786 POC Details
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III. Intelligence Information for CVE-2022-3602

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Vendor Advisories for CVE-2022-3602 (5)

Exploits & Public PoCs for CVE-2022-3602 (1)

Mailing List Discussions for CVE-2022-3602 (32)

Other References for CVE-2022-3602 (2)

IV. Related Vulnerabilities

Same product: OpenSSL
Same vendor: OpenSSL

V. Comments for CVE-2022-3602

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