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x/vulndb: potential Go vuln in github.com/envoyproxy/envoy: CVE-2020-15104 #2279

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tatianab opened this issue Nov 8, 2023 · 1 comment
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x/vulndb: potential Go vuln in github.com/envoyproxy/envoy: CVE-2020-15104 #2279

tatianab opened this issue Nov 8, 2023 · 1 comment
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excluded: LEGACY_FALSE_POSITIVE (DO NOT USE) Vulnerability marked as false positive before we introduced the triage process

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@tatianab
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tatianab commented Nov 8, 2023

CVE-2020-15104 references github.com/envoyproxy/envoy, which may be a Go module.

Description:
In Envoy before versions 1.12.6, 1.13.4, 1.14.4, and 1.15.0 when validating TLS certificates, Envoy would incorrectly allow a wildcard DNS Subject Alternative Name apply to multiple subdomains. For example, with a SAN of *.example.com, Envoy would incorrectly allow nested.subdomain.example.com, when it should only allow subdomain.example.com. This defect applies to both validating a client TLS certificate in mTLS, and validating a server TLS certificate for upstream connections. This vulnerability is only applicable to situations where an untrusted entity can obtain a signed wildcard TLS certificate for a domain of which you only intend to trust a subdomain of. For example, if you intend to trust api.mysubdomain.example.com, and an untrusted actor can obtain a signed TLS certificate for *.example.com or *.com. Configurations are vulnerable if they use verify_subject_alt_name in any Envoy version, or if they use match_subject_alt_names in version 1.14 or later. This issue has been fixed in Envoy versions 1.12.6, 1.13.4, 1.14.4, 1.15.0.

References:

Cross references:

See doc/triage.md for instructions on how to triage this report.

modules:
    - module: github.com/envoyproxy/envoy
      vulnerable_at: 1.28.0
      packages:
        - package: envoy
cves:
    - CVE-2020-15104
references:
    - advisory: https://github.com/envoyproxy/envoy/security/advisories/GHSA-w5f5-6qhq-hhrg
@tatianab tatianab added the excluded: LEGACY_FALSE_POSITIVE (DO NOT USE) Vulnerability marked as false positive before we introduced the triage process label Nov 8, 2023
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Change https://go.dev/cl/540721 mentions this issue: data/excluded: batch add 135 excluded reports

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@GoVulnBot GoVulnBot mentioned this issue Jul 1, 2024
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