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CVE Record

CVE-2017-20115: TrueConf Server Reflected cross site scripting

A vulnerability was found in TrueConf Server 4.3.7 and classified as problematic. This issue affects some unknown processing of the file /admin/conferences/list/. The manipulation of the argument sort leads to basic cross site scripting (Reflected). The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

LowCVSS 3.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

TrueConf Server 4.3.7 has a reflected cross-site scripting issue in an administrative conference list page. A logged-in user would need to be tricked into interacting with a crafted request. Business impact is limited but could allow content injection in an admin context.

Executive priority

Handle through normal vulnerability management unless the admin portal is externally reachable or used by many privileged users. Public exploit disclosure raises urgency, but the CVSS score and required user interaction keep this below emergency priority.

Technical view

The issue affects unknown processing in /admin/conferences/list/ where the sort argument can cause reflected XSS. CVSS 3.1 is 3.5 with network access, low complexity, low privileges required, and user interaction required. Sources identify TrueConf Server 4.3.7 only.

Likely exposure

Exposure is limited to organizations running TrueConf Server 4.3.7, especially where the administrative interface is reachable by users beyond trusted administrators or internal networks.

Exploitation context

The exploit has been publicly disclosed, including an Exploit-DB reference. The provided sources do not show CISA KEV listing or confirmed active exploitation.

Researcher notes

Evidence names only TrueConf Server 4.3.7 and the sort parameter on /admin/conferences/list/. The sources do not provide a vendor patch reference, broader version range, or active exploitation confirmation. Avoid assuming other TrueConf products or versions are affected.

Mitigation direction

  • Inventory TrueConf Server instances and identify any version 4.3.7 deployments.
  • Check TrueConf vendor guidance for fixed versions or supported remediation.
  • Restrict administrative interface access to trusted networks or VPN users.
  • Prioritize upgrade or compensating controls for internet-reachable admin portals.
  • Train administrators to avoid unsolicited links while remediation is pending.

Validation and detection

  • Confirm TrueConf Server version on each managed instance.
  • Identify whether /admin/conferences/list/ is reachable from untrusted networks.
  • Review access logs for unusual admin conference-list requests using sort parameters.
  • Verify admin access requires authentication and is limited to intended users.
  • Document whether vendor guidance or an upgrade path is available.
Prepared
Confidence
medium
Sources
4

Public sources used

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.

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cve · low confidence lookup

CVE-2017-20115 mapping review

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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-2017-20115Attack 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-80

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