Security readout for executives and security teams
Plain-English summary
This issue affects IPFire 2.21 Core Update 127. A lower-privileged authenticated attacker can store malicious JavaScript through the extrahd.cgi page, causing it to run in an administrator’s browser. Business impact is mainly administrative-session compromise risk, not direct device takeover.
Executive priority
Treat as a scheduled but timely remediation for affected IPFire appliances. Prioritize faster if the admin interface is broadly reachable or many users have appliance access.
Technical view
CVE-2019-25399 is a stored cross-site scripting issue in IPFire extrahd.cgi. The FS, PATH, and UUID parameters do not sufficiently neutralize script input. CVSS 3.1 is 6.4, with network access, low complexity, low privileges, changed scope, and low confidentiality and integrity impact.
Likely exposure
Exposure appears limited to IPFire 2.21 Core Update 127 systems where an attacker has authenticated access to the relevant administrative interface or can otherwise submit data processed by extrahd.cgi.
Exploitation context
A public ExploitDB entry exists, but the provided sources do not show CISA KEV listing or confirmed active exploitation. Successful abuse would target authenticated administrator browser context through stored script execution.
Researcher notes
Evidence names only IPFire 2.21 Core Update 127 and extrahd.cgi. The source bundle includes a public exploit reference, but no confirmed in-the-wild exploitation or specific fixed version. Avoid assuming other IPFire releases are affected without vendor confirmation.
Mitigation direction
- Identify any IPFire 2.21 Core Update 127 deployments.
- Review IPFire vendor guidance for fixed releases or supported upgrade paths.
- Restrict administrative interface access to trusted networks and users.
- Remove unnecessary low-privilege accounts with access to administration functions.
- Monitor administrative pages and logs for unexpected extrahd.cgi parameter values.
Validation and detection
- Confirm IPFire version and Core Update level on each appliance.
- Review whether extrahd.cgi is reachable from untrusted networks.
- Audit administrator and lower-privileged accounts for necessity.
- Check logs for suspicious submissions involving FS, PATH, or UUID fields.
- Verify remediation against vendor guidance after upgrading or configuration changes.
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.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2019-25399 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
- Medium
- CVSS
- 6.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N3.12.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-46344CVE reference · exploit
- IPFire Official WebsiteCVE reference · product
- IPFire 2.21 Core Update 127 DownloadCVE reference · patch
- VulnCheck Advisory: IPFire 2.21 Core Update 127 Stored XSS via extrahd.cgiCVE reference · third-party-advisory
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.