Security readout for executives and security teams
Plain-English summary
MISP 2.4.128 had a broken access-control check in its attachment download path. In practical terms, a user might be able to download attachments they should not be allowed to access. The public bundle does not provide CVSS, affected-version range, or confirmed exploitation details.
Executive priority
Prioritize remediation for MISP systems containing sensitive threat intelligence or shared partner data. The issue is not confirmed exploited, but unauthorized attachment access could expose confidential indicators, reports, or evidence files.
Technical view
The issue is in app/Controller/AttributesController.php, where the attachment downloader had insufficient ACL checks. The referenced MISP commit is the only fix-related source in the bundle. Impact is best understood as an authorization weakness affecting attachment access, but the exact access conditions are not documented here.
Likely exposure
Clearly identified exposure is limited to MISP 2.4.128. The bundle does not confirm whether other MISP versions are affected, whether public access is required, or which user roles can trigger the vulnerable path.
Exploitation context
The CVE is not listed as KEV in the supplied bundle, and no cited source claims active exploitation. Treat exploit status as unconfirmed. Risk depends on whether sensitive attachments are stored in MISP and who can access the downloader route.
Researcher notes
Evidence is sparse: the CVE description names MISP 2.4.128 and insufficient ACL checks in the attachment downloader, with a single GitHub commit reference. No CVSS, CWE, exploit confirmation, or affected-version range is provided in the bundle.
Mitigation direction
- Upgrade MISP according to vendor guidance for CVE-2020-15411.
- Ensure the referenced MISP ACL fix is present in deployed code.
- Restrict MISP access to trusted users and networks where feasible.
- Review attachment permissions and remove unnecessary sensitive files.
- Monitor for unusual attachment download activity.
Validation and detection
- Inventory MISP instances and identify any running version 2.4.128.
- Check whether the referenced fix commit is present in deployed code.
- Review access logs for unexpected attachment downloads.
- Confirm users cannot access attachments outside their authorized events.
- Document any affected instances and remediation status.
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.
CVE-2020-15411 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/MISP/MISP/commit/d14ce7de709cdde3ecc9433e38e14c682894e88aCVE reference · x_refsource_MISC
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.