CVE-2020-8938— Arbitrary enclave memory location write from untrusted environment
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I. Basic Information for CVE-2020-8938
Vulnerability Information
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Vulnerability Title
Arbitrary enclave memory location write from untrusted environment
Source: NVD (National Vulnerability Database)
Vulnerability Description
An arbitrary memory overwrite vulnerability in Asylo versions up to 0.6.0 allows an attacker to make a host call to FromkLinuxSockAddr with attacker controlled content and size of klinux_addr which allows an attacker to write memory values from within the enclave. We recommend upgrading past commit a37fb6a0e7daf30134dbbf357c9a518a1026aa02
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Google Asylo 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google Asylo是美国Google公司的一个用于开发可信应用程序的框架。该软件支持创建一个可信任的执行环境，包括软件隔离和硬件隔离。 Asylo up to 0.6.0 存在安全漏洞，该漏洞允许攻击者可利用该漏洞通过攻击者可利用该漏洞控制的内容和klinux addr大小的klinuxsockaddr主机调用FromkLinuxSockAddr，这允许攻击者可利用该漏洞从enclave内写入内存值。
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 |
|---|---|---|---|---|
| Google LLC | Asylo | unspecified ~ 0.6.0 | - |
II. Public POCs for CVE-2020-8938
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Google LLC · 2020-12-15 · 10 CVEs total
| CVE-2020-8935 | 5.3 MEDIUM | Google Asylo 缓冲区错误漏洞 |
| CVE-2020-8936 | 5.3 MEDIUM | Arbitrary enclave memory overwrite vulnerability in ECall ecall_restore |
| CVE-2020-8937 | 5.3 MEDIUM | Arbitrary enclave memory location write from untrusted environment |
| CVE-2020-8939 | 5.3 MEDIUM | Out of Bounds read in Asylo |
| CVE-2020-8940 | 5.3 MEDIUM | Unchecked buffer overrun in enc_untrusted_recvmsg |
| CVE-2020-8941 | 5.3 MEDIUM | Unchecked buffer overrun in enc_untrusted_inet_pton |
| CVE-2020-8942 | 5.3 MEDIUM | Unchecked buffer overrun in enc_untrusted_read |
| CVE-2020-8943 | 5.3 MEDIUM | Unchecked buffer overrun in enc_untrusted_recvfrom |
| CVE-2020-8944 | 5.3 MEDIUM | Unchecked buffer overrun in ecall_restore |
IV. Related Vulnerabilities
Same product: Asylo
- CVE-2021-22552
Memory overread secure enclave in Asylo 0.6.2 - CVE-2021-22550
Enclave memory overwrite/overread vulnerability in Asylo Unt - CVE-2021-22549
Arbitrary enclave memory overwrite vulnerability in Asylo Tr - CVE-2021-22548
Arbitrary enclave memory overread vulnerability in Asylo Tru - CVE-2020-8944
Unchecked buffer overrun in ecall_restore
Same vendor: Google LLC
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V. Comments for CVE-2020-8938
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