CVE-2020-27718 — Uncontrolled Resource Consumption in F5 Big-ip Advanced WEB Application Firewall

CWE-400 — Uncontrolled Resource Consumption4 documents4 sources
Severity
7.5HIGHNVD
EPSS
0.6%
top 29.22%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
F5 Big-ip Advanced WEB Application FirewallF5 Big-ip Application Security Manager
Timeline
PublishedDec 24
Latest updateMay 24

Description

When a BIG-IP ASM or Advanced WAF system running version 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3, 13.1.0-13.1.3.4, 12.1.0-12.1.5.2, or 11.6.1-11.6.5.2 processes requests with JSON payload, an unusually large number of parameters can cause excessive CPU usage in the BIG-IP ASM bd process.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages2 packages

▶NVDf5/big-ip_application_security_manager13.1.0 — 13.1.3.5+5

🔴Vulnerability Details

2
GHSA
GHSA-gmqq-hrf4-4gvf: When a BIG-IP ASM or Advanced WAF system running version 16↗2022-05-24
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CVEList
CVE-2020-27718: When a BIG-IP ASM or Advanced WAF system running version 16↗2020-12-24
▶

📋Vendor Advisories

1
F5
CVE-2020-27718: When a BIG-IP ASM or Advanced WAF system running version 16↗2020-12-24
▶
CVE-2020-27718 — Uncontrolled Resource Consumption | cvebase