CVEvulnerability
CVE-2019-7656
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-01-29
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
- Weaknesses
- CWE-732
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.
Affected configurations
• wowza streaming engine (<= 4.8.0)
Related
Weakness · CWE (1)
- CWE-732 Incorrect Permission Assignment for Critical Resource weakness
References
- https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2019-7656-PrivEscal-Wowza Exploit, Third Party Advisory
- https://raw.githubusercontent.com/WowzaMediaSystems/public_cve/main/wowza-streaming-engine/CVE-2019-7656.txt Third Party Advisory
- https://www.wowza.com/docs/wowza-streaming-engine-4-8-5-release-notes Release Notes, Vendor Advisory
- https://www.wowza.com/pricing/installer Vendor Advisory
- https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2019-7656-PrivEscal-Wowza Exploit, Third Party Advisory
- https://raw.githubusercontent.com/WowzaMediaSystems/public_cve/main/wowza-streaming-engine/CVE-2019-7656.txt Third Party Advisory
- https://www.wowza.com/docs/wowza-streaming-engine-4-8-5-release-notes Release Notes, Vendor Advisory
- https://www.wowza.com/pricing/installer Vendor Advisory