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CVE-2021-40438

CVE-2021-40438 · mod_proxy SSRF

This page contains facts from public vulnerability sources. Check the original advisory before updating.

A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier.

CVSS 9.0 · Critical · EPSS 100.0% · In KEV · Public exploit · Fix available

Published
Updated

Stack: system · web

Affected products and versions

  • apache httpd

    Versions
    • ≥ Apache HTTP Server 2.4, ≤ 2.4.48: Affected (custom)

    No fix published

  • apache2 Debian:12

    Affected ranges
    • ECOSYSTEM: < 2.4.49-1

    Update to 2.4.49-1

  • apache2 Debian:13

    Affected ranges
    • ECOSYSTEM: < 2.4.49-1

    Update to 2.4.49-1

  • apache2 Debian:14

    Affected ranges
    • ECOSYSTEM: < 2.4.49-1

    Update to 2.4.49-1

  • apache2 Ubuntu:Pro:16.04:LTS

    Versions
    • 2.4.12-2ubuntu2
    • 2.4.17-1ubuntu1
    • 2.4.17-2ubuntu1
    • 2.4.17-3ubuntu1
    • 2.4.18-1ubuntu1
    • 2.4.18-2ubuntu1
    • 2.4.18-2ubuntu2
    • 2.4.18-2ubuntu3
    • 2.4.18-2ubuntu3.1
    • 2.4.18-2ubuntu3.2
    • 2.4.18-2ubuntu3.3
    • 2.4.18-2ubuntu3.4
    • 2.4.18-2ubuntu3.5
    • 2.4.18-2ubuntu3.7
    • 2.4.18-2ubuntu3.8
    • 2.4.18-2ubuntu3.9
    • 2.4.18-2ubuntu3.10
    • 2.4.18-2ubuntu3.12
    • 2.4.18-2ubuntu3.13
    • 2.4.18-2ubuntu3.14
    • 2.4.18-2ubuntu3.15
    • 2.4.18-2ubuntu3.17
    • 2.4.18-2ubuntu3.17+esm1
    • 2.4.18-2ubuntu3.17+esm2
    Affected ranges
    • ECOSYSTEM: < 2.4.18-2ubuntu3.17+esm3

    Update to 2.4.18-2ubuntu3.17+esm3

  • apache2 Ubuntu:18.04:LTS

    Versions
    • 2.4.27-2ubuntu3
    • 2.4.29-1ubuntu1
    • 2.4.29-1ubuntu2
    • 2.4.29-1ubuntu3
    • 2.4.29-1ubuntu4
    • 2.4.29-1ubuntu4.1
    • 2.4.29-1ubuntu4.2
    • 2.4.29-1ubuntu4.3
    • 2.4.29-1ubuntu4.4
    • 2.4.29-1ubuntu4.5
    • 2.4.29-1ubuntu4.6
    • 2.4.29-1ubuntu4.7
    • 2.4.29-1ubuntu4.8
    • 2.4.29-1ubuntu4.10
    • 2.4.29-1ubuntu4.11
    • 2.4.29-1ubuntu4.12
    • 2.4.29-1ubuntu4.13
    • 2.4.29-1ubuntu4.14
    • 2.4.29-1ubuntu4.16
    • 2.4.29-1ubuntu4.17
    Affected ranges
    • ECOSYSTEM: < 2.4.29-1ubuntu4.18

    Update to 2.4.29-1ubuntu4.18

  • apache2 Ubuntu:20.04:LTS

    Versions
    • 2.4.41-1ubuntu1
    • 2.4.41-4ubuntu1
    • 2.4.41-4ubuntu2
    • 2.4.41-4ubuntu3
    • 2.4.41-4ubuntu3.1
    • 2.4.41-4ubuntu3.3
    • 2.4.41-4ubuntu3.4
    • 2.4.41-4ubuntu3.5
    Affected ranges
    • ECOSYSTEM: < 2.4.41-4ubuntu3.6

    Update to 2.4.41-4ubuntu3.6

Original sources

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