CVE-2021-22958: Server-Side Request Forgery (SSRF)

October 12, 2021 (updated October 18, 2021)

A Server-Side Request Forgery vulnerability was found in concrete5 < 8.5.5 that allowed a decimal notation encoded IP address to bypass the limitations in place for localhost allowing interaction with local services. Impact can vary depending on services exposed.CVSSv2.0 AV:A/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N

References

documentation.concretecms.org/developers/introduction/version-history/855-release-notes
github.com/advisories/GHSA-284f-f2hw-j2gx
github.com/concrete5/concrete5/pull/8826
hackerone.com/reports/863221
nvd.nist.gov/vuln/detail/CVE-2021-22958

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