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CVE-2020-15107— x87 FPU operations in enclaves are vulnerable to ABI poisoning in openenclave

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.

openenclave 0.10.0之前版本中存在安全漏洞。攻击者可利用该漏洞绕过安全限制。

CVSS 5.3 · Medium EPSS 0.33% · P25
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I. Basic Information for CVE-2020-15107

Vulnerability Information
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Vulnerability Title
x87 FPU operations in enclaves are vulnerable to ABI poisoning in openenclave
Source: CVE Program / CVE List V5
Vulnerability Description
In openenclave before 0.10.0, enclaves that use x87 FPU operations are vulnerable to tampering by a malicious host application. By violating the Linux System V Application Binary Interface (ABI) for such operations, a host app can compromise the execution integrity of some x87 FPU operations in an enclave. Depending on the FPU control configuration of the enclave app and whether the operations are used in secret-dependent execution paths, this vulnerability may also be used to mount a side-channel attack on the enclave. This has been fixed in 0.10.0 and the current master branch. Users will need 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:L/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
openenclave 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
openenclave 0.10.0之前版本中存在安全漏洞。攻击者可利用该漏洞绕过安全限制。
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 < 0.10.0 -

II. Public POCs for CVE-2020-15107

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III. Intelligence Information for CVE-2020-15107

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Vendor Advisories for CVE-2020-15107 (1)

IV. Related Vulnerabilities

Same product: openenclave
Same vendor: openenclave

V. Comments for CVE-2020-15107

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