Security readout for executives and security teams
Plain-English summary
CVE-2021-3314 is a reflected cross-site scripting issue in Oracle GlassFish Server 3.1.2.18 and below. An attacker could trick an administrator into opening a crafted link to a vulnerable log viewer page, causing browser-executed content. The sources note this affects unsupported GlassFish versions, so replacement or isolation matters more than waiting for normal maintenance.
Executive priority
Prioritize this as a legacy-platform risk. It is not evidenced as actively exploited here, but unsupported internet-reachable administration surfaces create avoidable business exposure and should be retired or tightly isolated.
Technical view
The vulnerable path is /common/logViewer/logViewer.jsf in Oracle GlassFish Server 3.1.2.18 and earlier. User-supplied content can be reflected into the page and executed by the administrator's browser. The provided CVE data has no CVSS score, CWE mapping, or named patch, and KEV status is false.
Likely exposure
Exposure is most likely where legacy, unsupported Oracle GlassFish Server 3.1.2.18 or older remains deployed, especially if the administrative interface is reachable by administrators through email-linked or public URLs.
Exploitation context
The provided sources describe social delivery through a public or emailed URL and execution in an administrator's browser. They do not claim active exploitation, and the CVE is not listed as KEV in the bundle.
Researcher notes
Evidence is limited to the CVE description and linked advisory sources. No CVSS, CWE, exploit-in-the-wild evidence, or specific vendor patch is supplied. Validate exposure through version inventory and administrative interface reachability, not by attempting exploit reproduction.
Mitigation direction
- Remove or replace unsupported GlassFish versions where feasible.
- Restrict administrative interfaces to trusted management networks only.
- Consult Oracle or vendor guidance for supported migration or upgrade options.
- Train administrators not to open untrusted admin-console links.
- Monitor requests to the vulnerable log viewer path.
Validation and detection
- Inventory GlassFish deployments and confirm exact versions.
- Identify any instances running 3.1.2.18 or earlier.
- Check whether admin interfaces are reachable from untrusted networks.
- Review logs for unusual access to /common/logViewer/logViewer.jsf.
- Confirm unsupported GlassFish is absent from production environments.
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-2021-3314 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://n4nj0.github.io/advisories/oracle-glassfish-reflected-xss/CVE 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.