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CVE Record

CVE-2018-17883: An issue was discovered in Open Ticket Request System (OTRS) 6.0.x before 6.0.12.

An issue was discovered in Open Ticket Request System (OTRS) 6.0.x before 6.0.12. An attacker could send an e-mail message with a malicious link to an OTRS system or an agent. If a logged-in agent opens this link, it could cause the execution of JavaScript in the context of OTRS.

MediumCVSS 6.1Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a cross-site scripting issue in OTRS 6.0.x before 6.0.12. A malicious email link could trigger JavaScript inside OTRS if opened by a logged-in agent. Business risk is account-context abuse of a support platform, not server takeover based on the provided sources.

Executive priority

Treat this as a scheduled but prompt remediation for any legacy OTRS 6.0.x installation. Prioritize systems used by customer support or internet-facing teams because compromise can affect ticket data and agent trust.

Technical view

CVE-2018-17883 is CWE-79 XSS with CVSS 3.1 score 6.1. The attack is network-reachable, requires user interaction, and executes JavaScript in the OTRS context after a logged-in agent opens a malicious link delivered to OTRS or the agent.

Likely exposure

Organizations running OTRS 6.0.x before 6.0.12 are potentially exposed, especially where agents receive external email content or links. The bundle does not identify affected CPEs beyond the OTRS version statement.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation depends on convincing a logged-in OTRS agent to open a malicious link, limiting scale but still creating realistic phishing risk.

Researcher notes

Evidence supports reflected or link-triggered XSS in authenticated agent context. The provided CNA affected-product metadata is incomplete, but the description names OTRS 6.0.x before 6.0.12. No source in the bundle confirms weaponization or broader product impact.

Mitigation direction

  • Upgrade OTRS 6.0.x deployments to 6.0.12 or later where applicable.
  • Review OTRS Security Advisory 2018-06 for vendor-specific remediation details.
  • If upgrade timing is uncertain, check current vendor guidance for supported interim controls.
  • Reinforce agent handling of unexpected links received through ticket workflows.

Validation and detection

  • Inventory OTRS deployments and identify any 6.0.x versions below 6.0.12.
  • Confirm whether agents process externally supplied emails or links inside OTRS.
  • Review OTRS security notes to match installed versions against the advisory.
  • Check monitoring for suspicious agent-session behavior following email link interactions.
Prepared
Confidence
high
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-79: 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-2018-17883 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.1 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/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
6.1CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N2.82.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.1Medium
CVSS 3.1 vector shape for CVE-2018-17883Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/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
n/an/an/aListed
Weakness

CWE details

CWE-79

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