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CVE-2024-6119— Possible denial of service in X.509 name checks

Quick assessment

Affected
OpenSSL OpenSSL
Exploitation
High exploitation probability; assess promptly
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 3.3版本、3.2版本、3.1版本和3.0版本存在安全漏洞，该漏洞源于允许读取无效的内存地址，从而导致应用程序进程异常终止。

AI Predicted 5.3 Difficulty: Moderate EPSS 66.58% · P99

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 4

VendorProduct Version RangeStatus
OpenSSL OpenSSL 3.3.0< 3.3.2 affected
3.2.0< 3.2.3 affected
3.1.0< 3.1.7 affected
3.0.0< 3.0.15 affected
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I. Basic Information for CVE-2024-6119

Vulnerability Information
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Vulnerability Title
Possible denial of service in X.509 name checks
Source: CVE Program / CVE List V5
Vulnerability Description
Issue summary: Applications performing certificate name checks (e.g., TLS clients checking server certificates) may attempt to read an invalid memory address resulting in abnormal termination of the application process. Impact summary: Abnormal termination of an application can a cause a denial of service. Applications performing certificate name checks (e.g., TLS clients checking server certificates) may attempt to read an invalid memory address when comparing the expected name with an `otherName` subject alternative name of an X.509 certificate. This may result in an exception that terminates the application program. Note that basic certificate chain validation (signatures, dates, ...) is not affected, the denial of service can occur only when the application also specifies an expected DNS name, Email address or IP address. TLS servers rarely solicit client certificates, and even when they do, they generally don't perform a name check against a reference identifier (expected identity), but rather extract the presented identity after checking the certificate chain. So TLS servers are generally not affected and the severity of the issue is Moderate. The FIPS modules in 3.3, 3.2, 3.1 and 3.0 are not affected by this issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用不兼容类型访问资源(类型混淆)
Source: CVE Program / CVE List V5
Vulnerability Title
OpenSSL 安全漏洞
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 3.3版本、3.2版本、3.1版本和3.0版本存在安全漏洞，该漏洞源于允许读取无效的内存地址，从而导致应用程序进程异常终止。
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 3.3.0 ~ 3.3.2 -

II. Public POCs for CVE-2024-6119

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III. Intelligence Information for CVE-2024-6119

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Patches & Fixes for CVE-2024-6119 (4)

Vendor Advisories for CVE-2024-6119 (1)

IV. Related Vulnerabilities

Same product: OpenSSL
Same vendor: OpenSSL
Same weakness: CWE-843

V. Comments for CVE-2024-6119

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