CVE-2021-3047— PAN-OS: Weak Cryptography Used in Web Interface Authentication
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I. Basic Information for CVE-2021-3047
Vulnerability Information
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Vulnerability Title
PAN-OS: Weak Cryptography Used in Web Interface Authentication
Source: NVD (National Vulnerability Database)
Vulnerability Description
A cryptographically weak pseudo-random number generator (PRNG) is used during authentication to the Palo Alto Networks PAN-OS web interface. This enables an authenticated attacker, with the capability to observe their own authentication secrets over a long duration on the PAN-OS appliance, to impersonate another authenticated web interface administrator's session. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.19; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14; PAN-OS 9.1 versions earlier than PAN-OS 9.1.10; PAN-OS 10.0 versions earlier than PAN-OS 10.0.4. PAN-OS 10.1 versions are not impacted.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用具有密码学弱点缺陷的PRNG
Source: NVD (National Vulnerability Database)
Vulnerability Title
Palo Alto Networks PAN-OS 安全特征问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Palo Alto Networks PAN-OS是美国Palo Alto Networks公司的一套为其防火墙设备开发的操作系统。 Palo Alto Networks PAN-OS Web 界面存在安全漏洞，该漏洞源于受影响产品使用了加密弱伪随机数生成器 (PRNG)。经过身份验证的攻击者能够在 PAN-OS 设备上长时间观察他们自己的身份验证秘密，从而模拟另一个经过身份验证的 Web 界面管理员会话。
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 |
|---|---|---|---|---|
| Palo Alto Networks | PAN-OS | 10.1.* | - |
II. Public POCs for CVE-2021-3047
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://security.paloaltonetworks.com/CVE-2021-3047x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-3047
Same Patch Batch · Palo Alto Networks · 2021-08-11 · 5 CVEs total
| CVE-2021-3050 | 8.8 HIGH | PAN-OS: OS Command Injection Vulnerability in Web Interface |
| CVE-2021-3046 | 6.8 MEDIUM | PAN-OS: Improper SAML Authentication Vulnerability in GlobalProtect Portal |
| CVE-2021-3048 | 5.9 MEDIUM | PAN-OS: Invalid URLs in an External Dynamic List (EDL) can Lead to Firewall Outage |
| CVE-2021-3045 | 4.9 MEDIUM | PAN-OS: OS Command Argument Injection in Web Interface |
IV. Related Vulnerabilities
Same product: PAN-OS
- CVE-2025-0116
PAN-OS: Firewall Denial of Service (DoS) Using a Specially C - CVE-2025-0115
PAN-OS: Authenticated Admin File Read Vulnerability in PAN-O - CVE-2025-0114
PAN-OS: Denial of Service (DoS) in GlobalProtect - CVE-2024-9471
PAN-OS: Privilege Escalation (PE) Vulnerability in XML API - CVE-2024-8691
PAN-OS: User Impersonation in GlobalProtect Portal
Same vendor: Palo Alto Networks
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Cortex XSOAR: Improper Verification of Cryptographic Signatu - CVE-2026-0231
Cortex XDR Broker VM: Sensitive Information Disclosure Vulne
Same weakness: CWE-338
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V. Comments for CVE-2021-3047
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