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CVE-2020-12695

Good to know:

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Date: June 8, 2020

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.

Severity Score

Related Resources (26)

https://usn.ubuntu.com/4494-1/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MZDWHKGN3LMGSUEOAAVAMOD3IUIPJVOJ/
https://www.callstranger.com
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RQEYVY4D7LASH6AI4WK3IK2QBFHHF3Q2/
https://security.alpinelinux.org/vuln/CVE-2020-12695
https://security-tracker.debian.org/tracker/CVE-2020-12695
https://www.tenable.com/blog/cve-2020-12695-callstranger-vulnerability-in-universal-plug-and-play-upnp-puts-billions-of
https://www.debian.org/security/2020/dsa-4806
http://www.openwall.com/lists/oss-security/2020/06/08/2
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3SHL4LOFGHJ3DIXSUIQELGVBDJ7V7LB/
https://lists.debian.org/debian-lts-announce/2020/08/msg00013.html
https://www.debian.org/security/2021/dsa-4898
https://github.com/corelight/callstranger-detector
https://lists.debian.org/debian-lts-announce/2020/08/msg00011.html
https://nvd.nist.gov/vuln/detail/CVE-2020-12695
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RQEYVY4D7LASH6AI4WK3IK2QBFHHF3Q2/
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-12695
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MZDWHKGN3LMGSUEOAAVAMOD3IUIPJVOJ/
https://github.com/yunuscadirci/CallStranger
https://www.kb.cert.org/vuls/id/339275
https://lists.debian.org/debian-lts-announce/2020/12/msg00017.html
https://access.redhat.com/security/cve/CVE-2020-12695
https://corelight.blog/2020/06/10/detecting-the-new-callstranger-upnp-vulnerability-with-zeek/
http://packetstormsecurity.com/files/158051/CallStranger-UPnP-Vulnerability-Checker.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L3SHL4LOFGHJ3DIXSUIQELGVBDJ7V7LB/
https://www.mend.io/vulnerability-database/CVE-2020-12695

Severity Score

Weakness Type (CWE)

Incorrect Default Permissions

CWE-276

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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