CVE-2019-7656

Public Exploit

Description

A privilege escalation vulnerability in Wowza Streaming Engine 4.8.0 and earlier allows any unprivileged Linux user to escalate privileges to root. The installer sets too relaxed permissions on /usr/local/WowzaStreamingEngine/bin/* core program files. By injecting a payload into one of those files, it will run with the same privileges as the Wowza server, root. For example, /usr/local/WowzaStreamingEngine/bin/tune.sh could be replaced with a Trojan horse. This issue was resolved in Wowza Streaming Engine 4.8.5.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.08%
Vendor Advisory wowza.com Vendor Advisory wowza.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.wowza.com/pricing/installer vendor advisory
https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2019-7656-PrivEscal-Wowza third party advisory exploit
https://www.wowza.com/docs/wowza-streaming-engine-4-8-5-release-notes release notes vendor advisory
https://raw.githubusercontent.com/WowzaMediaSystems/public_cve/main/wowza-streaming-engine/CVE-2019-7656.txt third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-7656?
CVE-2019-7656 has been scored as a high severity vulnerability.
How to fix CVE-2019-7656?
To fix CVE-2019-7656, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-7656 being actively exploited in the wild?
It is possible that CVE-2019-7656 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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