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Google::Auth versions 0.12 for Perl allow server side request forgery via unvalidated credential_source URLs in AWS external account…

Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.

Published
Last modified
Published
Not listed in CISA KEV
5/100 · provisional
None on Exploit-DB, Metasploit or GitHub

Summary

Google::Auth for Perl, an authentication library used to obtain Google Cloud credentials, can be induced to send requests to arbitrary internal or metadata hosts when it processes an AWS external account configuration that the caller does not fully control. This server-side request forgery could expose internal services and cloud instance metadata endpoints to unauthorized requests.

Read the original description

Google::Auth versions 0.12 for Perl allow server side request forgery via unvalidated credential_source URLs in AWS external account credentials. An external_account configuration with the AWS subject token type selects Google::Auth::ExternalAccountCredentials::Aws. Its retrieve_subject_token sends requests to the imdsv2_session_token_url, url and region_url fields of credential_source without the host check that the other credential classes apply. Any caller that builds credentials from a configuration it does not fully control issues GET and PUT requests to hosts the configuration names, including internal services and link-local metadata endpoints.

Timeline

  1. CVE published
  2. First seen by cve.now

Affected versions

  • Google-Auth

    0.12

Evidence 1

  1. Link

Corrections

None so far.

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