Vulnerability CVE-2020-13977

Vulnerability Name:

CVE-2020-13977 (CCN-183368)

Assigned:

2020-06-03

Published:

2020-06-03

Updated:

2021-07-21

Summary:

Nagios 4.4.5 allows an attacker, who already has administrative access to change the "URL for JSON CGIs" configuration setting, to modify the Alert Histogram and Trends code via crafted versions of the archivejson.cgi, objectjson.cgi, and statusjson.cgi files.
Note: this vulnerability has been mistakenly associated with CVE-2020-1408.

CVSS v3 Severity:

4.9 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N)
4.3 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N/E:U/RL:U/RC:R)

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

4.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)
3.8 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:U/RC:R)

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

CVSS v2 Severity:

4.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N)

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

4.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N)

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

Vulnerability Type:

CWE-74

Vulnerability Consequences:

Bypass Security

References:

Source: MITRE
Type: CNA
CVE-2020-13977

Source: CCN
Type: Aishee Blog, June 3, 2020
Nagios Core 4.4.5 URL Injection (CVE-2020-13977)

Source: MISC
Type: Exploit, Third Party Advisory
https://anhtai.me/nagios-core-4-4-5-url-injection/

Source: XF
Type: UNKNOWN
nagios-cve202013977-sec-bypass(183368)

Source: MISC
Type: Product, Third Party Advisory
https://github.com/sawolf/nagioscore/tree/url-injection-fix

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-01a2f76cc3

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-b5e897a2e5

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-5689072a7e

Source: CCN
Type: Nagios Web site
Nagios - The Industry Standard In IT Infrastructure Monitoring

Source: MISC
Type: Release Notes, Vendor Advisory
https://www.nagios.org/projects/nagios-core/history/4x/

Vulnerable Configuration:

Configuration 1:

cpe:/a:nagios:nagios:4.4.5:*:*:*:*:*:*:*

Configuration 2:

cpe:/o:fedoraproject:fedora:32:*:*:*:*:*:*:*

OR cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*

OR cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:nagios:nagios:4.4.5:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:113010	P	nagios-4.4.6-2.5 on GA media (Moderate)	2022-01-17
oval:org.opensuse.security:def:106456	P	Security update for ruby2.5 (Important)	2021-12-01
oval:org.opensuse.security:def:11213	P	Security update for nagios (Important)	2021-05-16
oval:org.opensuse.security:def:96481	P	Security update for nagios (Important)	2021-05-16
oval:org.opensuse.security:def:103171	P	Security update for nagios (Important)	2021-05-16
oval:org.opensuse.security:def:109828	P	Security update for nagios (Important)	2021-05-16
oval:org.opensuse.security:def:111378	P	Security update for nagios (Important)	2021-05-12

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