Vulnerability CVE-2018-5520

Vulnerability Name:

CVE-2018-5520 (CCN-142675)

Assigned:

2018-05-01

Published:

2018-05-01

Updated:

2020-08-24

Summary:

On an F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.1, or 11.2.1-11.6.3.1 system configured in Appliance mode, the TMOS Shell (tmsh) may allow an administrative user to use the dig utility to gain unauthorized access to file system resources.

CVSS v3 Severity:

4.4 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N)
3.9 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): High Privileges Required (PR): High User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): None Availibility (A): None

4.4 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N)
3.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): High Privileges Required (PR): High User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): None Availibility (A): None

CVSS v2 Severity:

3.5 Low (CVSS v2 Vector: AV:N/AC:M/Au:S/C:P/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Medium Authentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Partial Integrity (I): None Availibility (A): None

4.9 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:S/C:C/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): High Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Complete Integrity (I): None Availibility (A): None

Vulnerability Type:

CWE-863

Vulnerability Consequences:

Obtain Information

References:

Source: MITRE
Type: CNA
CVE-2018-5520

Source: CCN
Type: SECTRACK ID: 1040798
F5 BIG-IP Flaw in TMOS Shell Lets Remote Authenticated Administrative Users Obtain Potentially Sensitive Information

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1040798

Source: XF
Type: UNKNOWN
f5-cve20185520-info-disc(142675)

Source: CCN
Type: F5 Security Advisory K02043709
Appliance mode tmsh access vulnerability CVE-2018-5520

Source: CONFIRM
Type: Vendor Advisory
https://support.f5.com/csp/article/K02043709

Vulnerable Configuration:

Configuration 1:

cpe:/a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* (Version >= 11.2.1 and <= 11.6.3)

OR cpe:/a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* (Version >= 12.1.0 and <= 12.1.3)

OR cpe:/a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* (Version >= 13.0.0 and <= 13.1.0)

Configuration 2:

cpe:/a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* (Version >= 11.2.1 and <= 11.6.3)

OR cpe:/a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* (Version >= 12.1.0 and <= 12.1.3)

OR cpe:/a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* (Version >= 13.0.0 and <= 13.1.0)

Configuration 3:

cpe:/a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* (Version >= 11.2.1 and <= 11.6.3)

OR cpe:/a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* (Version >= 12.1.0 and <= 12.1.3)

OR cpe:/a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* (Version >= 13.0.0 and <= 13.1.0)

Configuration 4:

cpe:/a:f5:big-ip_analytics:*:*:*:*:*:*:*:* (Version >= 11.2.1 and <= 11.6.3)

OR cpe:/a:f5:big-ip_analytics:*:*:*:*:*:*:*:* (Version >= 12.1.0 and <= 12.1.3)

OR cpe:/a:f5:big-ip_analytics:*:*:*:*:*:*:*:* (Version >= 13.0.0 and <= 13.1.0)

Configuration 5:

cpe:/a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* (Version >= 11.2.1 and <= 11.6.3)

OR cpe:/a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* (Version >= 12.1.0 and <= 12.1.3)

OR cpe:/a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* (Version >= 13.0.0 and <= 13.1.0)

Configuration 6:

cpe:/a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* (Version >= 11.2.1 and <= 11.6.3)

OR cpe:/a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* (Version >= 12.1.0 and <= 12.1.3)

OR cpe:/a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* (Version >= 13.0.0 and <= 13.1.0)

Configuration 7:

cpe:/a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* (Version >= 11.2.1 and <= 11.6.3)

OR cpe:/a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* (Version >= 12.1.0 and <= 12.1.3)

OR cpe:/a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* (Version >= 13.0.0 and <= 13.1.0)

Configuration 8:

cpe:/a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* (Version >= 11.2.1 and <= 11.6.3)

OR cpe:/a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* (Version >= 12.1.0 and <= 12.1.3)

OR cpe:/a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* (Version >= 13.0.0 and <= 13.1.0)

Configuration 9:

cpe:/a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* (Version >= 11.2.1 and <= 11.6.3)

OR cpe:/a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* (Version >= 12.1.0 and <= 12.1.3)

OR cpe:/a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* (Version >= 13.0.0 and <= 13.1.0)

Configuration 10:

cpe:/a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* (Version >= 11.2.1 and <= 11.6.3)

OR cpe:/a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* (Version >= 12.1.0 and <= 12.1.3)

OR cpe:/a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* (Version >= 13.0.0 and <= 13.1.0)

Configuration 11:

cpe:/a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* (Version >= 11.2.1 and <= 11.6.3)

OR cpe:/a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* (Version >= 12.1.0 and <= 12.1.3)

OR cpe:/a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* (Version >= 13.0.0 and <= 13.1.0)

Configuration 12:

cpe:/a:f5:big-ip_websafe:*:*:*:*:*:*:*:* (Version >= 11.2.1 and <= 11.6.3)

OR cpe:/a:f5:big-ip_websafe:*:*:*:*:*:*:*:* (Version >= 12.1.0 and <= 12.1.3)

OR cpe:/a:f5:big-ip_websafe:*:*:*:*:*:*:*:* (Version >= 13.0.0 and <= 13.1.0)

Configuration 13:

cpe:/a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* (Version >= 11.2.1 and <= 11.6.3)

OR cpe:/a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* (Version >= 12.1.0 and <= 12.1.3)

OR cpe:/a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* (Version >= 13.0.0 and <= 13.1.0)

Configuration CCN 1:

cpe:/a:f5:big-ip:11.2.1:*:*:*:*:*:*:*

OR cpe:/a:f5:big-ip:12.1.0:*:*:*:*:*:*:*

OR cpe:/a:f5:big-ip:13.0.0:*:*:*:*:*:*:*

OR cpe:/a:f5:big-ip:12.1.3.1:*:*:*:*:*:*:*

OR cpe:/a:f5:big-ip:13.1.0.5:*:*:*:*:*:*:*

OR cpe:/a:f5:big-ip:11.6.3.1:*:*:*:*:*:*:*

Denotes that component is vulnerable

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