Security readout for executives and security teams
Plain-English summary
CVE-2019-3786 affects Cloud Foundry BOSH Backup and Restore CLI before 1.5.0 in a specific etcd backup job scenario. An authenticated attacker could tamper with backup metadata so a restore exposes extra files from other jobs. The main business risk is unauthorized disclosure of sensitive deployment data, not service outage.
Executive priority
Prioritize remediation for Cloud Foundry environments that rely on BBR for etcd backups. The issue requires authenticated access, but the confidentiality impact can be high because backups may contain sensitive platform data.
Technical view
BBR did not verify the authenticity of backup scripts in BOSH. With low-privileged authenticated network access, an attacker could alter BBR job metadata to request additional backup files during restore. The cited description narrows practical exposure to clusters using the BBR etcd job from cfcr-etcd-release. CVSS 3.0 is 7.7, scope changed, confidentiality high.
Likely exposure
Most exposed organizations are Cloud Foundry operators using BOSH Backup and Restore CLI before 1.5.0 with the cfcr-etcd-release BBR job for etcd. Evidence does not support broad exposure across unrelated BOSH jobs or non-Cloud Foundry products.
Exploitation context
The source bundle reports remote authenticated exploitation conditions and no user interaction requirement. CISA KEV is false, and no provided source states active exploitation in the wild. Exploitation impact is framed as unauthorized access to backup files during restore.
Researcher notes
The record maps to CWE-269 and CVSS vector AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N. The source bundle is specific about vulnerable hooks being maintained only in cfcr-etcd-release, so avoid expanding affected scope without additional vendor evidence.
Mitigation direction
- Upgrade BOSH Backup and Restore CLI to version 1.5.0 or later.
- Identify deployments using the cfcr-etcd-release BBR job for etcd.
- Restrict who can modify BBR job metadata and restore inputs.
- Follow Cloud Foundry advisory guidance for affected CFCR etcd deployments.
- Investigate possible sensitive data exposure if backup metadata was untrusted.
Validation and detection
- Inventory BBR CLI versions across Cloud Foundry operations hosts.
- Check whether cfcr-etcd-release includes the BBR etcd job in use.
- Review restore workflows for unauthenticated or weakly controlled metadata inputs.
- Audit access logs for users modifying backup job metadata.
- Confirm post-upgrade restores still complete successfully in test environments.
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.
CWE-269: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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 lookupCVE-2019-3786 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.7 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
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 vector scores
1 official scoreWe 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.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N3.14Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.7HighVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cloudfoundry.org/blog/cve-2019-3786CVE reference · x_refsource_CONFIRM
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.
Improper Privilege Management
Improper Privilege Management represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.