Security readout for executives and security teams
Plain-English summary
CVE-2019-19455 is a local privilege escalation issue in Linux Wowza Streaming Engine before 4.8.5. Someone who already has local access could abuse insecure permissions to gain root-level control. The issue is fixed in Wowza Streaming Engine 4.8.5.
Executive priority
Prioritize remediation where Wowza runs on Linux production servers. Treat this as high impact because successful exploitation could grant root privileges, but urgency depends on local-access exposure and whether hosts are already updated.
Technical view
The CVE describes insecure permissions in /usr/local/WowzaStreamingEngine/manager/bin/ on Linux Wowza Streaming Engine before 4.8.5. A local attacker may write arbitrary commands into files that are then executed as root. Supplied sources do not provide CVSS, CWE, or broader affected-version detail.
Likely exposure
Exposure is most likely on Linux servers running Wowza Streaming Engine versions earlier than 4.8.5, especially systems with local users, shared administration, or service accounts that could interact with the affected installation path.
Exploitation context
The supplied bundle does not cite CISA KEV listing or active exploitation. The issue requires local access, so internet exposure alone is not enough; risk rises if an attacker compromises any low-privileged account on the server.
Researcher notes
Evidence is limited to the CVE description, Wowza release notes reference, and Wowza public CVE text. No CVSS score, CWE mapping, exploit confirmation, or detailed advisory content is included in the supplied bundle.
Mitigation direction
- Upgrade Wowza Streaming Engine to version 4.8.5 or later.
- Review Wowza release notes and vendor CVE text for deployment-specific guidance.
- Restrict local shell access to the streaming server.
- Review permissions on the Wowza manager bin directory.
- Monitor the affected path for unexpected file changes.
Validation and detection
- Inventory Wowza Streaming Engine versions on Linux hosts.
- Confirm no production host is running a version before 4.8.5.
- Check ownership and write permissions for the manager bin directory.
- Review recent file changes in the affected Wowza path.
- Assess whether untrusted local users or service accounts exist.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2019-19455 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.gruppotim.it/redteamCVE reference · x_refsource_MISC
- https://www.wowza.com/docs/wowza-streaming-engine-4-8-5-release-notesCVE reference · x_refsource_MISC
- https://raw.githubusercontent.com/WowzaMediaSystems/public_cve/main/wowza-streaming-engine/CVE-2019-19455.txtCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.