VDE-2022-014

csafDEphoenix_contact_psirt

PHOENIX CONTACT: mGuard Device Manager affected by HTTP Request Smuggling of Apache Webserver

view advisory published 2022-04-12

Apache HTTP Server 2.4.52 and earlier fails to close inbound connection when errors are encountered discarding the request body, exposing the server to HTTP Request Smuggling. For the mGuard Device Manager only the mdm Installer for Windows is affected.

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describes (1)

Related CVEs.

IDseverity exploitable
CVE-2022-22720UScritical9.8Exploit
Apache HTTP Server 2.4.52 and earlier fails to close inbound connection when errors are encountered discarding the request body, exposing the server to HTTP Request Smuggling
02

references

External citations — patches, advisories, analysis.

03

remediations (2)

  • MitigationFirmware <=1.13.0.1 installed on FL MGUARD DM UNLIMITED

    This vulnerability is exploitable only if the ConfigPull functionality is used and config files are stored unencrypted. As a best practice and mitigation measure, we recommend storing configuration files encrypted with the device specific public key of the mGuard appliances.

  • FixedFirmware <=1.13.0.1 installed on FL MGUARD DM UNLIMITED

    PHOENIX CONTACT strongly recommends upgrading FL MGUARD DM UNLIMITED to version 1.13.0.2 or higher, which fixes this vulnerability.

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