Security readout for executives and security teams
Plain-English summary
HCL Sametime has a CSRF issue in some Sametime Proxy REST APIs. With user interaction, an attacker may cause malicious actions in the application. Business risk is mainly unauthorized actions affecting confidentiality and integrity, not service outage.
Executive priority
Treat as a moderate-priority remediation item. It is not reported as exploited in the provided sources, but affected collaboration systems can carry sensitive business communications and identity-linked actions.
Technical view
CVE-2023-50349 is CWE-352 in HCL Sametime Proxy REST APIs. Affected versions are 11.5, 11.6, 11.6 IF1, 12.0, 12.0 FP1, 12.0.1, and 12.0.1 FP1. CVSS 3.1 is 5.9 with high confidentiality and integrity impact and no availability impact.
Likely exposure
Exposure is likely limited to organizations running listed HCL Sametime versions with the Sametime Proxy application and impacted REST APIs. The CVSS vector requires user interaction and physical attack vector, but the public bundle does not explain that scoring choice.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Public details identify the weakness class and affected versions, but do not name specific API endpoints or observed attacker activity.
Researcher notes
Evidence is limited to CVE metadata and the HCL advisory reference. The bundle does not provide endpoint names, proof-of-concept details, patch identifiers, or workaround specifics. Avoid assuming exploitability beyond the published CSRF description and CVSS scope.
Mitigation direction
- Check HCL advisory KB0109082 for fixed versions and official mitigation guidance.
- Inventory HCL Sametime deployments and compare versions against the affected list.
- Prioritize Sametime Proxy systems handling sensitive conversations or administrative workflows.
- Restrict unnecessary access to Sametime Proxy while remediation is planned.
- Monitor Sametime Proxy activity for unexpected state-changing actions.
Validation and detection
- Confirm whether Sametime Proxy is deployed and enabled in the environment.
- Record exact HCL Sametime version and fix pack level for each deployment.
- Review HCL KB0109082 for vendor-defined vulnerable and fixed builds.
- Verify CSRF protections on state-changing REST API workflows after remediation.
- Check logs for suspicious actions around high-value user sessions.
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.
CWE-352: 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-2023-50349 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
- 5.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/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:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N0.75.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0109082CVE reference
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.
Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.