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CVE Record

CVE-2017-20117: TrueConf Server group DOM cross site scripting

A vulnerability was found in TrueConf Server 4.3.7. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file /admin/group. The manipulation leads to basic cross site scripting (DOM). The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

LowCVSS 3.5Not KEV-listedUpdated
Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

TrueConf Server 4.3.7 has a DOM-based XSS issue in the admin group page. An attacker needs some privileges and user interaction, so business risk is limited. The main concern is unauthorized page behavior or content modification inside an administrative workflow, not server takeover.

Executive priority

Treat as routine remediation unless TrueConf administration is broadly exposed. The issue is low severity, but public disclosure means vulnerable legacy deployments should be found and addressed.

Technical view

The source describes CWE-80 DOM XSS in /admin/group for TrueConf Server 4.3.7. CVSS 3.1 is 3.5 with network access, low complexity, low privileges required, user interaction required, and integrity-only impact. The affected functionality is not further identified.

Likely exposure

Exposure is likely limited to organizations running TrueConf Server 4.3.7, especially where the admin interface is reachable by non-trusted users or broad internal audiences.

Exploitation context

Public exploit disclosure is referenced by Exploit-DB and VulDB. The CVE is not listed as KEV, and the supplied sources do not show active exploitation in the wild.

Researcher notes

Evidence is sparse: the vulnerable component is /admin/group, but the exact DOM sink and affected parameter are not described in the bundle. Avoid assuming broader TrueConf versions or confirmed exploitation without additional vendor or threat-intelligence evidence.

Mitigation direction

  • Check TrueConf guidance for a fixed release or vendor workaround.
  • Restrict access to the TrueConf administrative interface.
  • Limit administrative privileges to trusted users only.
  • Prioritize upgrade or retirement if version 4.3.7 is present.
  • Monitor administrative activity for unexpected group page changes.

Validation and detection

  • Inventory TrueConf Server instances and versions.
  • Confirm whether any instance runs TrueConf Server 4.3.7.
  • Review who can reach /admin/group and related admin paths.
  • Check whether compensating access controls protect the admin interface.
  • Verify remediation status against current vendor guidance.
Prepared
Confidence
medium
Sources
4

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · medium confidence lookup

CWE-80: 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 lookup
cve · low confidence lookup

CVE-2017-20117 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Low
CVSS
3.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
3.5CVSS 3.1LowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N2.11.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

3.5Low
CVSS 3.1 vector shape for CVE-2017-20117Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
TrueConfServer4.3.7Listed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-80 · source CWE mapping

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.