critical
9.9
CWE
22
Advisory Published
Updated

CVE-2021-40358: Path Traversal

First published: Tue Nov 09 2021(Updated: )

A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3 UC04), SIMATIC PCS 7 V9.1 (All versions < V9.1 SP1), SIMATIC WinCC V15 and earlier (All versions < V15 SP1 Update 7), SIMATIC WinCC V16 (All versions < V16 Update 5), SIMATIC WinCC V17 (All versions < V17 Update 2), SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Update 19), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 5). Legitimate file operations on the web server of the affected systems do not properly neutralize special elements within the pathname. An attacker could then cause the pathname to resolve to a location outside of the restricted directory on the server and read, write or delete unexpected critical files.

Credit: productcert@siemens.com

Affected SoftwareAffected VersionHow to fix
SIEMENS SIMATIC PCS 7=8.2
SIEMENS SIMATIC PCS 7=9.0
SIEMENS SIMATIC PCS 7=9.1
Siemens Simatic WinCC=7.4
Siemens Simatic WinCC=7.4
Siemens Simatic WinCC=7.4-sp1
Siemens Simatic WinCC=7.4-sp1_update1
Siemens Simatic WinCC=7.4-sp1_update10
Siemens Simatic WinCC=7.4-sp1_update11
Siemens Simatic WinCC=7.4-sp1_update12
Siemens Simatic WinCC=7.4-sp1_update13
Siemens Simatic WinCC=7.4-sp1_update14
Siemens Simatic WinCC=7.4-sp1_update15
Siemens Simatic WinCC=7.4-sp1_update16
Siemens Simatic WinCC=7.4-sp1_update17
Siemens Simatic WinCC=7.4-sp1_update18
Siemens Simatic WinCC=7.4-sp1_update2
Siemens Simatic WinCC=7.4-sp1_update3
Siemens Simatic WinCC=7.4-sp1_update4
Siemens Simatic WinCC=7.4-sp1_update5
Siemens Simatic WinCC=7.4-sp1_update6
Siemens Simatic WinCC=7.4-sp1_update7
Siemens Simatic WinCC=7.4-sp1_update8
Siemens Simatic WinCC=7.4-sp1_update9
Siemens Simatic WinCC=7.4-update_1
Siemens Simatic WinCC=7.5
Siemens Simatic WinCC=7.5-sp1
Siemens Simatic WinCC=7.5-sp1_update1
Siemens Simatic WinCC=7.5-sp1_update2
Siemens Simatic WinCC=7.5-sp2
Siemens Simatic WinCC=7.5-sp2_update1
Siemens Simatic WinCC=7.5-sp2_update2
Siemens Simatic WinCC=7.5-sp2_update3
Siemens Simatic WinCC=7.5-sp2_update4
Siemens Simatic WinCC=15
Siemens Simatic WinCC=15.1
Siemens Simatic WinCC=15.1-update_1
Siemens Simatic WinCC=15.1-update_2
Siemens Simatic WinCC=15.1-update_3
Siemens Simatic WinCC=15.1-update_4
Siemens Simatic WinCC=15.1-update_5
Siemens Simatic WinCC=15.1-update_6
Siemens Simatic WinCC=16-update1
Siemens Simatic WinCC=16-update2
Siemens Simatic WinCC=16-update3
Siemens Simatic WinCC=16-update4
Siemens Simatic WinCC=17
Siemens Simatic WinCC=17-update1

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-40358?

    The severity of CVE-2021-40358 is critical.

  • Which versions of SIMATIC PCS 7 are affected by CVE-2021-40358?

    SIMATIC PCS 7 V8.2, SIMATIC PCS 7 V9.0, and SIMATIC PCS 7 V9.1 are affected by CVE-2021-40358.

  • Which versions of SIMATIC WinCC are affected by CVE-2021-40358?

    SIMATIC WinCC V15 and earlier, SIMATIC WinCC V16, and SIMATIC WinCC V17 are affected by CVE-2021-40358.

  • How severe is the vulnerability in CVE-2021-40358?

    The severity of the vulnerability in CVE-2021-40358 is critical with a CVSS score of 9.9.

  • Where can I find more information about CVE-2021-40358?

    You can find more information about CVE-2021-40358 at the following link: [link](https://cert-portal.siemens.com/productcert/pdf/ssa-840188.pdf).

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