Vulnerability Name:

CVE-2021-23028 (CCN-208078)

Assigned:2021-08-24
Published:2021-08-24
Updated:2021-09-24
Summary:On version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.2, and 13.1.x before 13.1.4, when JSON content profiles are configured for URLs as part of an F5 Advanced Web Application Firewall (WAF)/BIG-IP ASM security policy and applied to a virtual server, undisclosed requests may cause the BIG-IP ASM bd process to terminate.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-20
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-23028

Source: XF
Type: UNKNOWN
f5-cve202123028-dos(208078)

Source: CCN
Type: F5 Security Advisory K00602225
Advanced WAF and BIG-IP ASM vulnerability CVE-2021-23028

Source: MISC
Type: Mitigation, Vendor Advisory
https://support.f5.com/csp/article/K00602225

Vulnerable Configuration:Configuration 1:
  • cpe:/a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* (Version >= 13.1.3.5 and <= 13.1.3.6)
  • OR cpe:/a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* (Version >= 14.1.3.1 and <= 14.1.4.1)
  • OR cpe:/a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* (Version >= 15.1.1 and < 15.1.3.1)
  • OR cpe:/a:f5:big-ip_advanced_web_application_firewall:16.0.1:*:*:*:*:*:*:*
  • OR cpe:/a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* (Version >= 13.1..3.5 and <= 13.1.3.6)
  • OR cpe:/a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* (Version >= 14.1.3.1 and <= 14.1.4.1)
  • OR cpe:/a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* (Version >= 15.1.0 and < 15.1.3.1)
  • OR cpe:/a:f5:big-ip_application_security_manager:16.0.1:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:f5:big-ip:14.1.0:*:*:*:*:*:*:*
  • OR cpe:/a:f5:big-ip:13.1.0:*:*:*:*:*:*:*
  • OR cpe:/o:f5:big-ip:13.1.3:*:*:*:*:*:*:*
  • OR cpe:/o:f5:big-ip:15.1.0:*:*:*:*:*:*:*
  • OR cpe:/a:f5:big-ip:13.1.0:*:*:*:*:*:*:*
  • OR cpe:/o:f5:big-ip:13.1.3:*:*:*:*:*:*:*
  • OR cpe:/a:f5:big-ip:14.1.0:*:*:*:*:*:*:*
  • OR cpe:/o:f5:big-ip:15.1.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    f5 big-ip advanced web application firewall *
    f5 big-ip advanced web application firewall *
    f5 big-ip advanced web application firewall *
    f5 big-ip advanced web application firewall 16.0.1
    f5 big-ip application security manager *
    f5 big-ip application security manager *
    f5 big-ip application security manager *
    f5 big-ip application security manager 16.0.1
    f5 big-ip 14.1.0
    f5 big-ip 13.1.0
    f5 big-ip 13.1.3
    f5 big-ip 15.1.0
    f5 big-ip 13.1.0
    f5 big-ip 13.1.3
    f5 big-ip 14.1.0
    f5 big-ip 15.1.0