CVE-2021-22548— Arbitrary enclave memory overread vulnerability in Asylo TrustedPrimitives::UntrustedCall
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I. Basic Information for CVE-2021-22548
Vulnerability Information
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Vulnerability Title
Arbitrary enclave memory overread vulnerability in Asylo TrustedPrimitives::UntrustedCall
Source: NVD (National Vulnerability Database)
Vulnerability Description
An attacker can change the pointer to untrusted memory to point to trusted memory region which causes copying trusted memory to trusted memory, if the latter is later copied out, it allows for reading of memory regions from the trusted region. It is recommended to update past 0.6.2 or git commit https://github.com/google/asylo/commit/53ed5d8fd8118ced1466e509606dd2f473707a5c
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
在缓冲区结束位置之后访问内存
Source: NVD (National Vulnerability Database)
Vulnerability Title
Google Asylo 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google Asylo是美国谷歌（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存在安全漏洞，该漏洞源于攻击者可利用该漏洞可以将指向不可信内存的指针指向可信内存区域，这将导致将可信内存复制到可信内存，如果之后将可信内存复制出来，则允许从可信区域读取内存区域。
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 ~ 0.6.2 | - |
II. Public POCs for CVE-2021-22548
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Google LLC · 2021-06-08 · 3 CVEs total
| CVE-2021-22549 | 6.5 MEDIUM | Arbitrary enclave memory overwrite vulnerability in Asylo TrustedPrimitives::UntrustedCall |
| CVE-2021-22550 | 6.5 MEDIUM | Enclave memory overwrite/overread vulnerability in Asylo UntrustedCacheMalloc::GetBuffer |
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-2020-8944
Unchecked buffer overrun in ecall_restore - CVE-2020-8942
Unchecked buffer overrun in enc_untrusted_read
Same vendor: Google LLC
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Same weakness: CWE-788
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V. Comments for CVE-2021-22548
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