CVE-2020-8939— Out of Bounds read in Asylo
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I. Basic Information for CVE-2020-8939
Vulnerability Information
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Vulnerability Title
Out of Bounds read in Asylo
Source: NVD (National Vulnerability Database)
Vulnerability Description
An out of bounds read on the enc_untrusted_inet_ntop function allows an attack to extend the result size that is used by memcpy() to read memory from within the enclave heap. We recommend upgrading past commit 6ff3b77ffe110a33a2f93848a6333f33616f02c4
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
跨界内存读
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。 Google Asylo 存在安全漏洞，该漏洞源于enc_untrusted_inet_ntop的越界读取允许攻击者可利用该漏洞扩展memcpy()用于从enclave堆中读取内存的结果大小。
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-2020-8939
| # | 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-2020-8938 | 5.3 MEDIUM | Arbitrary enclave memory location write from untrusted environment |
| 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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Privilege escalation in Google Drive for Desktop on MacOS - CVE-2022-3171
Memory handling vulnerability in ProtocolBuffers Java core a - CVE-2022-1941
Out of Memory issue in ProtocolBuffers for cpp and python
Same weakness: CWE-125
- CVE-2026-8177
XML::LibXML versions through 2.0210 for Perl read out-of-bou - CVE-2026-6104
Global buffer over-read in mb_convert_encoding() with attack - CVE-2026-7258
Out-of-bounds read in urldecode() on NetBSD - CVE-2026-8186
Open5GS NF client.c ogs_sbi_client_send_via_scp_or_sepp out- - CVE-2026-3508
ASUS System Control Interface 缓冲区错误漏洞
V. Comments for CVE-2020-8939
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