CVE-2018-16586 — In Open Ticket Request System (OTRS) 4
In Open Ticket Request System (OTRS) 4.0.x before 4.0.32, 5.0.x before 5.0.30, and 6.0.x before 6.0.11, an attacker could send a malicious email to an OTRS system. If a logged in user opens it, the email could cause the browser to load external image or CSS resources.
Published
2018-09-28T00:00:00.000Z
Last modified
2024-08-05T10:24:32.876Z
01What is this vulnerability?
In Open Ticket Request System (OTRS) 4.0.x before 4.0.32, 5.0.x before 5.0.30, and 6.0.x before 6.0.11, an attacker could send a malicious email to an OTRS system. If a logged in user opens it, the email could cause the browser to load external image or CSS resources.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2018-09-28T00:00:00.000Z
- Last modified: 2024-08-05T10:24:32.876Z
09References
- community.otrs.com — https://community.otrs.com/security-advisory-2018-05-security-update-for-otrs-fr…
- www.debian.org — https://www.debian.org/security/2018/dsa-4317
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2018/09/msg00033.html
- github.com — https://github.com/OTRS/otrs/commit/baa92df09145b8ae2702a3a0e85d8ba55ec96302
- github.com — https://github.com/OTRS/otrs/commit/a808859a75c59ae3b7568f5cc4708c53462aa4c7
- github.com — https://github.com/OTRS/otrs/commit/09e80c7752b0d9080688e4597c7495dd109e0963
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