CVE-2020-7943

Puppet Server and PuppetDB provide useful performance and debugging information via their metrics API endpoints. For PuppetDB this may contain things like hostnames. Puppet Server reports resource names and titles for defined types (which may contain sensitive information) as well as function names and class names. Previously, these endpoints were open to the local network. PE 2018.1.13 & 2019.5.0, Puppet Server 6.9.2 & 5.3.12, and PuppetDB 6.9.1 & 5.2.13 disable trapperkeeper-metrics /v1 metrics API and only allows /v2 access on localhost by default. This affects software versions: Puppet Enterprise 2018.1.x stream prior to 2018.1.13 Puppet Enterprise prior to 2019.5.0 Puppet Server prior to 6.9.2 Puppet Server prior to 5.3.12 PuppetDB prior to 6.9.1 PuppetDB prior to 5.2.13 Resolved in: Puppet Enterprise 2018.1.13 Puppet Enterprise 2019.5.0 Puppet Server 6.9.2 Puppet Server 5.3.12 PuppetDB 6.9.1 PuppetDB 5.2.13

Published: 2020-03-11 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]

NVD Status：Modified，CVE State: published

View at NVD, CVE.org, EUVD

Threat Intelligence & Risk Assessment for CVE-2020-7943

EPSS CVSS CWE Affected OS Tracker

Conclusion & alert: CVE-2020-7943 is rated High Risk (68.3/100): CVSS High severity, with high exploitation likelihood (EPSS 65.37%, 98th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +3.87% over the last day, indicating growing attacker interest. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-7943

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-03-04	61.50%	65.37%	+3.87%
2	2026-03-01	65.37%	61.50%	-3.87%
3	2026-02-04	—	65.37%	—

Full EPSS history (52 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-7943

CVSS metrics for this CVE.

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.5	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:N) Service keeps running; no real outage angle.	3.9	3.6	[email protected]
5.0	2.0	MEDIUM	`AV:N/AC:L/Au:N/C:P/I:N/A:N` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:N) No integrity impact. Availability impact (A:N) No availability impact.	10.0	2.9	[email protected]

Weakness enumeration for CVE-2020-7943

CWE-276 MITRE ↗

OS Trackers for CVE-2020-7943

vendor	priority	summary	link
`debian`	low	CVE-2020-7943 low priority: Debian including 3 source packages (puppet, puppetdb, puppetserver), 7 status rows across 4 suites (bookworm, bullseye, sid, trixie): resolved 7.	https://security-tracker.debian.org/tracker/CVE-2020-7943
`redhat`	high	—	https://access.redhat.com/security/cve/CVE-2020-7943
`suse`	high	—	https://www.suse.com/security/cve/CVE-2020-7943/
`ubuntu`	medium	CVE-2020-7943 medium priority: Ubuntu including 2 source packages (puppet, puppetdb), 34 status rows across 17 suites (bionic, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 13, ignored 11, needs-triage 10.	https://ubuntu.com/security/CVE-2020-7943

Affected software / configurations for CVE-2020-7943

Vendor	Product	Version	Raw CPE
puppet	puppet_enterprise	>= 2018.1.0, < 2018.1.15	cpe:2.3:a:puppet:puppet_enterprise::::::::
puppet	puppet_enterprise	>= 2019.0, < 2019.7.0	cpe:2.3:a:puppet:puppet_enterprise::::::::
puppet	puppet_server	< 5.3.13	cpe:2.3:a:puppet:puppet_server::::::::
puppet	puppet_server	>= 6.0.0, < 6.11.1	cpe:2.3:a:puppet:puppet_server::::::::
puppet	puppetdb	< 5.2.15	cpe:2.3:a:puppet:puppetdb::::::::
puppet	puppetdb	>= 6.0.0, < 6.10.1	cpe:2.3:a:puppet:puppetdb::::::::

References for CVE-2020-7943

URL	Tags
https://puppet.com/security/cve/CVE-2020-7943/	Vendor Advisory

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