Incorrect Default Permissions The advisory has been revoked - it doesn't affect any version of package libupnp (opens in a new tab)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1604-LIBUPNP-1078725
- published14 Sept 2020
- disclosed8 Jun 2020
Introduced: 8 Jun 2020
CVE-2020-12695 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:16.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libupnp package and not the libupnp package as distributed by Ubuntu.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2020-12695
- https://www.debian.org/security/2020/dsa-4806
- https://www.debian.org/security/2021/dsa-4898
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L3SHL4LOFGHJ3DIXSUIQELGVBDJ7V7LB/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MZDWHKGN3LMGSUEOAAVAMOD3IUIPJVOJ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RQEYVY4D7LASH6AI4WK3IK2QBFHHF3Q2/
- http://packetstormsecurity.com/files/158051/CallStranger-UPnP-Vulnerability-Checker.html
- https://corelight.blog/2020/06/10/detecting-the-new-callstranger-upnp-vulnerability-with-zeek/
- https://github.com/corelight/callstranger-detector
- https://github.com/yunuscadirci/CallStranger
- https://www.callstranger.com
- https://www.kb.cert.org/vuls/id/339275
- https://www.tenable.com/blog/cve-2020-12695-callstranger-vulnerability-in-universal-plug-and-play-upnp-puts-billions-of
- https://lists.debian.org/debian-lts-announce/2020/08/msg00011.html
- https://lists.debian.org/debian-lts-announce/2020/08/msg00013.html
- https://lists.debian.org/debian-lts-announce/2020/12/msg00017.html
- http://www.openwall.com/lists/oss-security/2020/06/08/2
- https://usn.ubuntu.com/4494-1/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3SHL4LOFGHJ3DIXSUIQELGVBDJ7V7LB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MZDWHKGN3LMGSUEOAAVAMOD3IUIPJVOJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RQEYVY4D7LASH6AI4WK3IK2QBFHHF3Q2/