High severity7.8NVD Advisory· Published Jan 29, 2020· Updated Jun 17, 2026
CVE-2019-7656
CVE-2019-7656
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.
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Affected products
2- Wowza/Streaming Enginedescription
- Range: <=4.8.0, <4.8.5
Patches
Vulnerability mechanics
References
4- github.com/DrunkenShells/Disclosures/tree/master/CVE-2019-7656-PrivEscal-WowzanvdExploitThird Party Advisory
- raw.githubusercontent.com/WowzaMediaSystems/public_cve/main/wowza-streaming-engine/CVE-2019-7656.txtnvdThird Party Advisory
- www.wowza.com/docs/wowza-streaming-engine-4-8-5-release-notesnvdRelease NotesVendor Advisory
- www.wowza.com/pricing/installernvdVendor Advisory
News mentions
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