CVE-2021-20305
Quick assessment
Affected
n/a nettle
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.
Linux Nettle是Linux开源的一个应用软件。包含的设计适合很容易在许多情况下一个低级别的密码库。 Linux Nettle 中存在缓冲区错误漏洞。该漏洞源于椭圆曲线加密点 (ECC) 乘法函数被调用超出范围的缩放器。
Possible ATT&CK Techniques 1 AI
T1556 · Modify Authentication Process
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I. Basic Information for CVE-2021-20305
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in Nettle in versions before 3.7.2, where several Nettle signature verification functions (GOST DSA, EDDSA & ECDSA) result in the Elliptic Curve Cryptography point (ECC) multiply function being called with out-of-range scalers, possibly resulting in incorrect results. This flaw allows an attacker to force an invalid signature, causing an assertion failure or possible validation. The highest threat to this vulnerability is to confidentiality, integrity, as well as system availability.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用已被攻破或存在风险的密码学算法
Source: CVE Program / CVE List V5
Vulnerability Title
Linux Nettle 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux Nettle是Linux开源的一个应用软件。包含的设计适合很容易在许多情况下一个低级别的密码库。 Linux Nettle 中存在缓冲区错误漏洞。该漏洞源于椭圆曲线加密点 (ECC) 乘法函数被调用超出范围的缩放器。
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 |
|---|---|---|---|---|
| - | nettle | nettle 3.7.2 | - |
|
II. Public POCs for CVE-2021-20305
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-20305 (4)
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https://bugzilla.redhat.com/show_bug.cgi?id=1942533 x_refsource_MISC
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https://security.netapp.com/advisory/ntap-20211022-0002/ x_refsource_CONFIRM
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Mailing List Discussions for CVE-2021-20305 (2)
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQKWVVMAIDAJ7YAA3VVO32BHLDOH2E63/ vendor-advisory x_refsource_FEDORA
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Same Patch Batch · n/a · 2021-04-05 · 15 CVEs total
| CVE-2021-30141 | Friendica 安全漏洞 | |
| CVE-2021-20307 | lianhaidong libpano13 格式化字符串错误漏洞 | |
| CVE-2021-20308 | HTMLDOC 输入验证错误漏洞 | |
| CVE-2020-19595 | Core FTP 缓冲区错误漏洞 | |
| CVE-2020-19596 | Core FTP Server 缓冲区错误漏洞 | |
| CVE-2021-30109 | froala editor 跨站脚本漏洞 | |
| CVE-2021-30055 | Knowage SQL注入漏洞 | |
| CVE-2021-30056 | Knowage 跨站脚本漏洞 | |
| CVE-2021-30057 | Knowage 注入漏洞 | |
| CVE-2021-30058 | Knowage 跨站脚本漏洞 | |
| CVE-2021-29996 | Mark Text 跨站脚本漏洞 | |
| CVE-2021-29261 | svelte 安全漏洞 | |
| CVE-2021-28832 | VSCodeVim 安全漏洞 | |
| CVE-2020-17453 | WSO2 Management Console 跨站脚本漏洞 |
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V. Comments for CVE-2021-20305
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