Vulnerability Name:

CVE-2018-5503 (CCN-140657)

Assigned:2018-03-22
Published:2018-03-22
Updated:2018-04-20
Summary:On F5 BIG-IP versions 13.0.0 - 13.1.0.3 or 12.0.0 - 12.1.3.1, TMM may restart when processing a specifically crafted page through a virtual server with an associated PEM policy that has content insertion as an action.
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:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
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-2018-5503

Source: CCN
Type: SECTRACK ID: 1040560
F5 BIG-IP Policy Enforcement Manager (PEM) Content Insertion Bug Lets Remote Users Deny Service

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1040560

Source: XF
Type: UNKNOWN
f5-cve20185503-dos(140657)

Source: CCN
Type: F5 Security Advisory K54562183
BIG-IP PEM vulnerability CVE-2018-5503

Source: CONFIRM
Type: Vendor Advisory
https://support.f5.com/csp/article/K54562183

Vulnerable Configuration:Configuration 1:
  • cpe:/a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* (Version >= 12.0.0 and < 12.1.3.2)
  • OR cpe:/a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* (Version >= 13.0.0 and < 13.1.0.4)

    • Configuration CCN 1:
  • cpe:/a:f5:big-ip:12.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:f5:big-ip:13.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:f5:big-ip:12.1.3.1:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    f5 big-ip policy enforcement manager *
    f5 big-ip policy enforcement manager *
    f5 big-ip 12.0.0
    f5 big-ip 13.0.0
    f5 big-ip 12.1.3.1