• Sublime Core Feed
Medium Severity

Open redirect: LinkedIn Redirect

Description

Message contains use of a LinkedIn Redirect. The redirect contains a 3 second delay before redirecting the browser. This redirection has been abused by threat actors in the wild.

References

No references.

Sublime Security
Created Oct 10th, 2024 • Last updated Aug 5th, 2025
Source
type.inbound
and any(body.links,
        .href_url.domain.root_domain == "linkedin.com"
        and .href_url.path =~ "/redir/redirect"
        and strings.icontains(.href_url.query_params, 'url=')
        and not any(.href_url.query_params_decoded["url"],
                    strings.parse_url(.).domain.root_domain in (
                      "lnkd.in",
                      'linkedin.com'
                    )
        )
)

// negate highly trusted sender domains unless they fail DMARC authentication
and (
  (
    sender.email.domain.root_domain in $high_trust_sender_root_domains
    and not headers.auth_summary.dmarc.pass
  )
  or sender.email.domain.root_domain not in $high_trust_sender_root_domains
)
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