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CVE-2021-22981

Quick assessment

Affected
n/a BIG-IP
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.

F5 BIG-IP是美国F5公司的一款集成了网络流量管理、应用程序安全管理、负载均衡等功能的应用交付平台。 BIG-IP中存在安全漏洞，该漏洞源于不使用EMS的TLS连接在重新协商期间容易受到中间人攻击。

AI Predicted 7.4 Difficulty: Moderate EPSS 0.56% · P44

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2021-22981

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
On all versions of BIG-IP 12.1.x and 11.6.x, the original TLS protocol includes a weakness in the master secret negotiation that is mitigated by the Extended Master Secret (EMS) extension defined in RFC 7627. TLS connections that do not use EMS are vulnerable to man-in-the-middle attacks during renegotiation. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
BIG-IP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
F5 BIG-IP是美国F5公司的一款集成了网络流量管理、应用程序安全管理、负载均衡等功能的应用交付平台。 BIG-IP中存在安全漏洞，该漏洞源于不使用EMS的TLS连接在重新协商期间容易受到中间人攻击。
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
- BIG-IP All versions of 12.1.x and 11.6.x -

II. Public POCs for CVE-2021-22981

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III. Intelligence Information for CVE-2021-22981

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Vendor Advisories for CVE-2021-22981 (1)

Same Patch Batch · n/a · 2021-02-12 · 25 CVEs total

CVE-2021-22982 AskF5 BIG-IP 缓冲区错误漏洞
CVE-2013-20001 OpenZFS 安全漏洞
CVE-2021-27190 Advisto PEEL SHOPPING 跨站脚本漏洞
CVE-2021-27205 Telegram 信息泄露漏洞
CVE-2021-27204 Telegram 信息泄露漏洞
CVE-2021-27187 Sovremennye Delovye Tekhnologii FX Aggregator 安全漏洞
CVE-2021-27188 Sovremennye Delovye Tekhnologii FX Aggregator 安全漏洞
CVE-2021-27197 Pelco Digital Sentry Server 访问控制错误漏洞
CVE-2021-22975 BIG-IP 安全漏洞
CVE-2021-22973 F5 BIG-IP 缓冲区错误漏洞
CVE-2021-22974 BIG-IP 竞争条件问题漏洞
CVE-2021-22976 BIG-IP Advanced WAF 和 ASM 资源管理错误漏洞
CVE-2021-26751 Nedi Consulting NeDi SQL注入漏洞
CVE-2021-22985 BIG-IP APM 资源管理错误漏洞
CVE-2021-22980 Microsoft Edge 代码问题漏洞
CVE-2021-22979 BIG-IP 跨站脚本漏洞
CVE-2021-22983 F5 BIG-IP AFM 跨站脚本漏洞
CVE-2021-22978 F5 BIG-IP 跨站脚本漏洞
CVE-2021-22984 F5 BIG-IP ASM 输入验证错误漏洞
CVE-2021-22977 BIG-IP 安全漏洞

Showing top 20 of 25 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: BIG-IP
Same vendor: n/a

V. Comments for CVE-2021-22981

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