64 lines
2.8 KiB
Markdown
64 lines
2.8 KiB
Markdown
# Security Exception: Nebula v1.9.7 (GHSA-69x3-g4r3-p962)
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**Date:** 2026-02-10
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**Status:** ACCEPTED RISK
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**CVE:** GHSA-69x3-g4r3-p962
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**Severity:** High
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**Package:** github.com/slackhq/nebula@v1.9.7
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**Fixed Version:** v1.10.3
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## Decision
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Accept the High severity vulnerability in nebula v1.9.7 as a documented known issue.
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## Rationale
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- Nebula is a transitive dependency via CrowdSec bouncer -> ipstore chain
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- Upgrading to v1.10.3 breaks compilation:
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- smallstep/certificates removed nebula APIs (NebulaCAPool, NewCAPoolFromBytes, etc.)
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- ipstore missing GetAndDelete method compatibility
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- No compatible upstream versions exist as of 2026-02-10
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- Patching dependencies during build is high-risk and fragile
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- High severity risk classification applies to vulnerabilities within our control
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- This is an upstream dependency management issue beyond our immediate control
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## Dependency Chain
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- Caddy (xcaddy builder)
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- github.com/hslatman/caddy-crowdsec-bouncer@v0.9.2
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- github.com/hslatman/ipstore@v0.3.0
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- github.com/slackhq/nebula@v1.9.7 (vulnerable)
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## Exploitability Assessment
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- Nebula is present in Docker image build artifacts
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- Used by CrowdSec bouncer for IP address management
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- Attack surface: [Requires further analysis - see monitoring plan]
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## Monitoring Plan
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Watch for upstream fixes in:
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- github.com/hslatman/caddy-crowdsec-bouncer (primary)
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- github.com/hslatman/ipstore (secondary)
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- github.com/smallstep/certificates (nebula API compatibility)
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- github.com/slackhq/nebula (direct upgrade if dependency chain updates)
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Check quarterly (or when Dependabot/security scans alert):
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- CrowdSec bouncer releases: https://github.com/hslatman/caddy-crowdsec-bouncer/releases
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- ipstore releases: https://github.com/hslatman/ipstore/releases
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- smallstep/certificates releases: https://github.com/smallstep/certificates/releases
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## Remediation Trigger
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Revisit and remediate when ANY of:
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- caddy-crowdsec-bouncer releases version with nebula v1.10.3+ support
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- smallstep/certificates releases version compatible with nebula v1.10.3
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- ipstore releases version fixing GetAndDelete compatibility
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- GHSA-69x3-g4r3-p962 severity escalates to CRITICAL
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- Proof-of-concept exploit published targeting Charon's attack surface
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## Alternative Mitigation (Future)
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If upstream remains stalled:
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- Consider removing CrowdSec bouncer plugin (loss of CrowdSec integration)
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- Evaluate alternative IP blocking/rate limiting solutions
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- Implement CrowdSec integration at reverse proxy layer instead of Caddy
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## References
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- CVE Details: https://github.com/advisories/GHSA-69x3-g4r3-p962
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- Analysis Report: [docs/reports/nebula_upgrade_analysis.md](../reports/nebula_upgrade_analysis.md)
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- Version Test Results: [docs/reports/nebula_upgrade_analysis.md](../reports/nebula_upgrade_analysis.md#6-version-compatibility-test-results)
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