Vulnerability Name:

CVE-2020-5936 (CCN-190870)

Assigned:2020-10-28
Published:2020-10-28
Updated:2020-11-09
Summary:On BIG-IP LTM 15.1.0-15.1.0.5, 14.1.0-14.1.2.7, 13.1.0-13.1.3.4, and 12.1.0-12.1.5.1, the Traffic Management Microkernel (TMM) process may consume excessive resources when processing SSL traffic and client authentication are enabled on the client SSL profile.
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
5.9 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/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): High
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
5.4 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-400
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-5936

Source: XF
Type: UNKNOWN
f5-cve20205936-dos(190870)

Source: CCN
Type: F5 Security Advisory K44020030
BIG-IP Client SSL Security Advisory CVE-2020-5936

Source: MISC
Type: Vendor Advisory
https://support.f5.com/csp/article/K44020030

Vulnerable Configuration:Configuration 1:
  • cpe:/a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* (Version >= 12.1.0 and < 12.1.5.2)
  • OR cpe:/a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* (Version >= 13.1.0 and <= 13.1.3.4)
  • OR cpe:/a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* (Version >= 14.1.0 and < 14.1.2.8)
  • OR cpe:/a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* (Version >= 15.0.0 and < 15.1.1)

    • Configuration CCN 1:
  • cpe:/a:f5:big-ip_local_traffic_manager:15.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:f5:big-ip_local_traffic_manager:14.1.0:*:*:*:*:*:*:*
  • OR cpe:/a:f5:big-ip_local_traffic_manager:14.1.2:*:*:*:*:*:*:*
  • OR cpe:/a:f5:big-ip_local_traffic_manager:13.1.0:*:*:*:*:*:*:*
  • OR cpe:/a:f5:big-ip_local_traffic_manager:13.1.3:*:*:*:*:*:*:*
  • OR cpe:/a:f5:big-ip_local_traffic_manager:12.1.0:*:*:*:*:*:*:*
  • OR cpe:/a:f5:big-ip_local_traffic_manager:12.1.5:*:*:*:*:*:*:*
  • OR cpe:/a:f5:big-ip_local_traffic_manager:15.1.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    f5 big-ip local traffic manager *
    f5 big-ip local traffic manager *
    f5 big-ip local traffic manager *
    f5 big-ip local traffic manager *
    f5 big-ip local traffic manager 15.0.0
    f5 big-ip local traffic manager 14.1.0
    f5 big-ip local traffic manager 14.1.2
    f5 big-ip local traffic manager 13.1.0
    f5 big-ip local traffic manager 13.1.3
    f5 big-ip local traffic manager 12.1.0
    f5 big-ip local traffic manager 12.1.5
    f5 big-ip local traffic manager 15.1.0