Vulnerability Details : CVE-2019-7656
Potential exploit
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.
Vulnerability category: Gain privilege
Products affected by CVE-2019-7656
- cpe:2.3:a:wowza:streaming_engine:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-7656
0.09%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 26 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-7656
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
NIST | |
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2019-7656
-
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-7656
-
https://www.wowza.com/pricing/installer
Streaming Server Download | Wowza Media SystemsVendor Advisory
-
https://www.wowza.com/docs/wowza-streaming-engine-4-8-5-release-notes
Wowza Streaming Engine 4.8.5 Release NotesRelease Notes;Vendor Advisory
-
https://raw.githubusercontent.com/WowzaMediaSystems/public_cve/main/wowza-streaming-engine/CVE-2019-7656.txt
Third Party Advisory
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https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2019-7656-PrivEscal-Wowza
Disclosures/CVE-2019-7656-PrivEscal-Wowza at master · DrunkenShells/Disclosures · GitHubExploit;Third Party Advisory
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