critical
9.8
CWE
122 787
Advisory Published
Updated

CVE-2021-25668

First published: Thu Apr 22 2021(Updated: )

A vulnerability has been identified in SCALANCE X200-4P IRT (All versions < 5.5.1), SCALANCE X201-3P IRT (All versions < 5.5.1), SCALANCE X201-3P IRT PRO (All versions < 5.5.1), SCALANCE X202-2 IRT (All versions < 5.5.1), SCALANCE X202-2P IRT (incl. SIPLUS NET variant) (All versions < 5.5.1), SCALANCE X202-2P IRT PRO (All versions < 5.5.1), SCALANCE X204 IRT (All versions < 5.5.1), SCALANCE X204 IRT PRO (All versions < 5.5.1), SCALANCE X204-2 (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE X204-2FM (All versions < V5.2.5), SCALANCE X204-2LD (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE X204-2LD TS (All versions < V5.2.5), SCALANCE X204-2TS (All versions < V5.2.5), SCALANCE X206-1 (All versions < V5.2.5), SCALANCE X206-1LD (All versions < V5.2.5), SCALANCE X208 (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE X208PRO (All versions < V5.2.5), SCALANCE X212-2 (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE X212-2LD (All versions < V5.2.5), SCALANCE X216 (All versions < V5.2.5), SCALANCE X224 (All versions < V5.2.5), SCALANCE XF201-3P IRT (All versions < 5.5.1), SCALANCE XF202-2P IRT (All versions < 5.5.1), SCALANCE XF204 (All versions < V5.2.5), SCALANCE XF204 IRT (All versions < 5.5.1), SCALANCE XF204-2 (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE XF204-2BA IRT (All versions < 5.5.1), SCALANCE XF206-1 (All versions < V5.2.5), SCALANCE XF208 (All versions < V5.2.5). Incorrect processing of POST requests in the webserver may result in write out of bounds in heap. An attacker might leverage this to cause denial-of-service on the device and potentially remotely execute code.

Credit: productcert@siemens.com

Affected SoftwareAffected VersionHow to fix
Siemens Scalance X-200IRT<5.5.1
Siemens SCALANCE X200-4PIRT
Siemens SCALANCE X201-3P IRT<5.5.1
Siemens SCALANCE X201-3P IRT PRO
Siemens SCALANCE X201-3P IRT PRO<5.5.1
Siemens Scalance X201-3P IRT Pro Firmware
Siemens SCALANCE X202-2IRT firmware<5.5.1
Siemens SCALANCE X202-2IRT
Siemens SCALANCE X202-2P IRT PRO<5.5.1
Siemens Scalance X202-2P IRT PRO Firmware
Siemens SCALANCE X204IRT Firmware<5.5.1
Siemens SCALANCE X204IRT
Siemens Scalance X204IRT PRO Firmware<5.5.1
Siemens SCALANCE X204IRT PRO
Siemens Scalance X204-2<5.2.5
Siemens Scalance X204-2
Siemens Scalance X204-2FM Firmware<5.2.5
Siemens SCALANCE X204-2FM
Siemens Scalance X204-2LD TS<5.2.5
Siemens Scalance X204-2 Firmware
Siemens Scalance X204-2LD TS<5.2.5
Siemens SCALANCE X204-2LD TS
Siemens Scalance X204-2TS<5.2.5
Siemens SCALANCE X204-2TS
Siemens Scalance X206-1LD<5.2.5
Siemens Scalance X206-1 Firmware
Siemens Scalance X206-1LD<5.2.5
Siemens SCALANCE X206-1LD
Siemens Scalance X208 Pro Firmware<5.2.5
Siemens Scalance X208
Siemens Scalance X208 Pro Firmware<5.2.5
Siemens Scalance X208 Pro Firmware
Siemens Scalance X212-2LD<5.2.5
Siemens SCALANCE X212-2LD
Siemens Scalance X212-2LD Firmware<5.2.5
Siemens Scalance X212-2LD Firmware
Siemens Scalance X216 Firmware<5.2.5
Siemens SCALANCE X-200 Firmware
Siemens Scalance X224 Firmware<5.2.5
Siemens Scalance X224 Firmware
Siemens Scalance XF201-3P IRT<5.5.1
Siemens SCALANCE XF201-3P IRT
Siemens Scalance XF202-2P IRT<5.5.1
Siemens SCALANCE XF202-2P IRT
Siemens Scalance XF204 Firmware<5.2.5
Siemens Scalance XF204-2 Firmware
Siemens SCALANCE XF204IRT firmware<5.5.1
Siemens SCALANCE XF204IRT (6GK5204-0BA00-2BF2)
Siemens Scalance XF204-2 Firmware<5.2.5
Siemens SCALANCE XF204-2
Siemens SCALANCE XF204-2BA IRT Firmware<5.5.1
Siemens Scalance XF204-2BA IRT
Siemens Scalance XF206-1<5.2.5
Siemens SCALANCE XF206-1
Siemens Scalance XF208<5.2.5
Siemens Scalance XF208
Siemens SIPLUS NET SCALANCE X202-2P IRT<5.5.1
Siemens SCALANCE X202-2P IRT firmware

Remedy

https://cert-portal.siemens.com/productcert/pdf/ssa-187092.pdf

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-25668?

    CVE-2021-25668 has been classified with a moderate severity level, highlighting its potential risk.

  • How do I fix CVE-2021-25668?

    To remediate CVE-2021-25668, upgrade the affected SCALANCE devices to version 5.5.1 or later.

  • What devices are affected by CVE-2021-25668?

    CVE-2021-25668 affects various models of SCALANCE X200, X201, X202, X204, and XF series devices with firmware versions below 5.5.1.

  • Is CVE-2021-25668 exploitable remotely?

    Yes, CVE-2021-25668 can potentially be exploited remotely, allowing unauthorized access to affected devices.

  • What are the potential impacts of CVE-2021-25668?

    Exploitation of CVE-2021-25668 could lead to unauthorized access, data leakage, or manipulation of the firmware configuration.

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