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CVE-2021-3521

Quick assessment

Affected
n/a RPM
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.

Red Hat Enterprise Linux是美国红帽（Red Hat）公司的面向企业用户的Linux操作系统 Red Hat Enterprise Linux 存在数据伪造问题漏洞，该漏洞源于RPM的签名功能出现了错误。RPM在导入子项时，没有检查绑定签名。能够将恶意子密钥添加到合法公钥的远程攻击者可利用该漏洞可以在系统上运行恶意代码。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.32% · P25
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I. Basic Information for CVE-2021-3521

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
There is a flaw in RPM's signature functionality. OpenPGP subkeys are associated with a primary key via a "binding signature." RPM does not check the binding signature of subkeys prior to importing them. If an attacker is able to add or socially engineer another party to add a malicious subkey to a legitimate public key, RPM could wrongly trust a malicious signature. The greatest impact of this flaw is to data integrity. To exploit this flaw, an attacker must either compromise an RPM repository or convince an administrator to install an untrusted RPM or public key. It is strongly recommended to only use RPMs and public keys from trusted sources.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat Enterprise Linux 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat Enterprise Linux是美国红帽（Red Hat）公司的面向企业用户的Linux操作系统 Red Hat Enterprise Linux 存在数据伪造问题漏洞，该漏洞源于RPM的签名功能出现了错误。RPM在导入子项时，没有检查绑定签名。能够将恶意子密钥添加到合法公钥的远程攻击者可利用该漏洞可以在系统上运行恶意代码。
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
- RPM Fixed in rpm-4.18.0-beta1, rpm-4.18.0-alpha2, rpm-4.18.0-alpha1 . -

II. Public POCs for CVE-2021-3521

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III. Intelligence Information for CVE-2021-3521

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Patches & Fixes for CVE-2021-3521 (2)

Vendor Advisories for CVE-2021-3521 (3)

Same Patch Batch · n/a · 2022-08-22 · 22 CVEs total

CVE-2022-37133 D-Link DIR-816 安全漏洞
CVE-2022-35191 D-Link AC1200 安全漏洞
CVE-2022-38667 Crow 资源管理错误漏洞
CVE-2022-38668 Crow 信息泄露漏洞
CVE-2022-38171 XPDF 输入验证错误漏洞
CVE-2022-35150 BaijiaCMS 代码问题漏洞
CVE-2021-3659 Linux kernel 代码问题漏洞
CVE-2021-3639 mod_auth_mellon 输入验证错误漏洞
CVE-2021-3590 Foreman 安全漏洞
CVE-2021-3586 Red Hat OpenShift Service Mesh 安全特征问题漏洞
CVE-2021-3513 Red Hat Keycloak 安全漏洞
CVE-2021-3481 Libqt 缓冲区错误漏洞
CVE-2021-3442 Red Hat 3scale API Management Platform 输入验证错误漏洞
CVE-2020-27836 Red Hat OpenShift cluster-ingress-operator 安全漏洞
CVE-2022-37134 D-Link DIR-816 安全漏洞
CVE-2021-37289 PLANEX Chibi Fai 3 安全漏洞
CVE-2022-36251 Clinic’s Patient Management System 跨站脚本漏洞
CVE-2022-36198 Bus Pass Management System SQL注入漏洞
CVE-2022-35583 wkhtmltopdf 代码问题漏洞
CVE-2022-2873 Linux kernel 安全漏洞

Showing top 20 of 22 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: RPM
Same vendor: n/a
Same weakness: CWE-347

V. Comments for CVE-2021-3521

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