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CVE-2020-15224— Socket syscalls can leak enclave memory contents in Open Enclave

Quick assessment

Affected
openenclave openenclave
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Open Enclave SDK是美国微软（Microsoft）公司的一款用于在C和C ++中构建安全区应用程序的SDK（软件开发工具包）。 Open Enclave 0.12.0 之前版本存在安全漏洞，该漏洞源于当Enclave应用程序使用套接字提供的系统调用时，会存在信息泄露漏洞。攻击者可利用该漏洞可以跨越信任边界从enclave堆读取特权数据。

CVSS 6.8 · Medium EPSS 0.64% · P50

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2020-15224

Vulnerability Information
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Vulnerability Title
Socket syscalls can leak enclave memory contents in Open Enclave
Source: CVE Program / CVE List V5
Vulnerability Description
In Open Enclave before version 0.12.0, an information disclosure vulnerability exists when an enclave application using the syscalls provided by the sockets.edl is loaded by a malicious host application. An attacker who successfully exploited the vulnerability could read privileged data from the enclave heap across trust boundaries. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The vulnerability would not allow an attacker to elevate user rights directly, but it could be used to obtain information otherwise considered confidential in an enclave, which could be used in further compromises. The issue has been addressed in version 0.12.0 and the current master branch. Users will need to to recompile their applications against the patched libraries to be protected from this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对外部实体的文件或目录可访问
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Open Enclave SDK 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Open Enclave SDK是美国微软（Microsoft）公司的一款用于在C和C ++中构建安全区应用程序的SDK（软件开发工具包）。 Open Enclave 0.12.0 之前版本存在安全漏洞，该漏洞源于当Enclave应用程序使用套接字提供的系统调用时，会存在信息泄露漏洞。攻击者可利用该漏洞可以跨越信任边界从enclave堆读取特权数据。
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
openenclave openenclave < 0.12.0 -

II. Public POCs for CVE-2020-15224

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III. Intelligence Information for CVE-2020-15224

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Patches & Fixes for CVE-2020-15224 (1)

Vendor Advisories for CVE-2020-15224 (1)

Other References for CVE-2020-15224 (1)

IV. Related Vulnerabilities

Same product: openenclave
Same vendor: openenclave
Same weakness: CWE-552

V. Comments for CVE-2020-15224

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