Security readout for executives and security teams
Plain-English summary
This vulnerability is an XSS issue in Liferay’s Redirect administration page. An attacker could inject script or HTML through a destination URL parameter. The public bundle names affected Liferay Portal 7.3.2 through 7.3.5 and Liferay DXP 7.3 before fix pack 1.
Executive priority
Treat this as a targeted remediation item for affected Liferay environments, not a broad emergency. Prioritize systems with exposed administration interfaces or high-value authenticated users.
Technical view
CVE-2021-29045 affects the Redirect module redirection administration page. The vulnerable parameter is _com_liferay_redirect_web_internal_portlet_RedirectPortlet_destinationURL, which may accept attacker-controlled script or HTML. No CVSS, CWE, or exploit details were provided in the bundle.
Likely exposure
Exposure is likely limited to organizations running the named Liferay Portal or DXP versions, especially where the Redirect administration function is reachable by untrusted or compromised users.
Exploitation context
The bundle describes remote injection of arbitrary web script or HTML, but does not provide evidence of active exploitation. The CVE is not marked as CISA KEV in the supplied data.
Researcher notes
Evidence is sparse: the bundle provides affected versions, vulnerable component, parameter, and vendor reference, but no CVSS, CWE, PoC, or exploitation confirmation. Avoid assuming impact beyond XSS without vendor details.
Mitigation direction
- Identify Liferay Portal and DXP versions in use.
- Apply Liferay’s relevant fixed release or DXP 7.3 fix pack 1 or later.
- Follow the linked Liferay advisory for product-specific remediation details.
- Restrict administrative access to trusted users while remediation is pending.
Validation and detection
- Confirm no production instance runs Liferay Portal 7.3.2 through 7.3.5.
- Confirm Liferay DXP 7.3 instances have fix pack 1 or later.
- Review Redirect administration access for unexpected users or changes.
- Check the vendor advisory for any version-specific notes.
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
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ATT&CK lookup starting points
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CVE-2021-29045 mapping review
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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.
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
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ADP provider summaries
Source materials
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.