CVE-2020-12695

HIGHEPSS 96th pctl

7.5

CVSS v3

Description

The Open Connectivity Foundation UPnP specification before 2020-04-17 does not forbid the acceptance of a subscription request with a delivery URL on a different network segment than the fully qualified event-subscription URL, aka the CallStranger issue.

CWE-276

How to fix

Remediation Available

gupnpDebian

Fixed in:1.2.3-1CVE-2020-12695

gupnpUbuntu

Fixed in:1.2.3-0ubuntu0.20.04.1USN-4494-1

hostapdUbuntu

Fixed in:1:2.1-0ubuntu1.7+esm3USN-4734-2

Fixed in:1:2.4-0ubuntu6.7USN-4734-1

Fixed in:2:2.6-15ubuntu2.7USN-4734-1

Fixed in:2:2.9-1ubuntu4.2USN-4734-1

libgupnp-1.2-0Ubuntu

Fixed in:1.2.3-0ubuntu0.20.04.1USN-4494-1

minidlnaUbuntu

Fixed in:1.1.5+dfsg-2ubuntu0.1USN-4722-1

Fixed in:1.2.1+dfsg-1ubuntu0.18.04.1USN-4722-1

Fixed in:1.2.1+dfsg-1ubuntu0.20.04.1USN-4722-1

wpaUbuntu

Fixed in:2.1-0ubuntu1.7+esm3USN-4734-2

Fixed in:2.4-0ubuntu6.7USN-4734-1

Fixed in:2:2.6-15ubuntu2.7USN-4734-1

Fixed in:2:2.9-1ubuntu4.2USN-4734-1

wpasupplicantUbuntu

Fixed in:2.1-0ubuntu1.7+esm3USN-4734-2

Fixed in:2.4-0ubuntu6.7USN-4734-1

Fixed in:2:2.6-15ubuntu2.7USN-4734-1

Fixed in:2:2.9-1ubuntu4.2USN-4734-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:H

Exploit Intelligence

15.19%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

References

Third-Party Advisory16

Other references1

callstranger.com

Related Vulnerabilities

Other CWE-276 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2013-0632	Critical	9.8	94%	KEV	-
CVE-2017-11610	High	8.8	87%	-	Fix
CVE-2023-29919	Critical	9.1	60%	-	-
CVE-2019-17124	Critical	9.8	23%	-	-
CVE-2020-12608	High	7.8	22%	-	Fix
CVE-2021-3437	Critical	9.8	16%	-	Fix

Common questions

How do I fix CVE-2020-12695?

Published advisories record a fix for 7 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2020-12695 being actively exploited?

Not that we know of. CVE-2020-12695 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 15.2% is the estimated probability that it will be exploited in the next 30 days. That is higher than 96% of all scored CVEs.

How severe is CVE-2020-12695?

CVE-2020-12695 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2020-12695 affect?

Published advisories record a fix for gupnp (Debian), gupnp (Ubuntu), hostapd (Ubuntu), libgupnp-1.2-0 (Ubuntu), and 3 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.