CVE-2021-25668
Siemens SCALANCE Web Server Heap Buffer Overflow
Description
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.
INFO
Published Date :
April 22, 2021, 9:15 p.m.
Last Modified :
May 1, 2022, 1:10 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2021-25668
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-25668.
| URL | Resource |
|---|---|
| https://cert-portal.siemens.com/productcert/pdf/ssa-187092.pdf | Patch Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-25668 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-25668 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
May. 01, 2022
Action Type Old Value New Value Changed CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x204-2_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x204-2:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:scalance_x204-2_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.5 OR cpe:2.3:h:siemens:scalance_x204-2:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x204-2fm_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x204-2fm:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:scalance_x204-2fm_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.5 OR cpe:2.3:h:siemens:scalance_x204-2fm:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x204-2ld_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x204-2ld:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:scalance_x204-2ld_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.5 OR cpe:2.3:h:siemens:scalance_x204-2ld:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x204-2ld_ts_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x204-2ld_ts:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:scalance_x204-2ld_ts_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.5 OR cpe:2.3:h:siemens:scalance_x204-2ld_ts:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x204-2ts_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x204-2ts:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:scalance_x204-2ts_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.5 OR cpe:2.3:h:siemens:scalance_x204-2ts:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x206-1_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x206-1:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:scalance_x206-1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.5 OR cpe:2.3:h:siemens:scalance_x206-1:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x206-1ld_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x206-1ld:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:scalance_x206-1ld_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.5 OR cpe:2.3:h:siemens:scalance_x206-1ld:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x208_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x208:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:scalance_x208_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.5 OR cpe:2.3:h:siemens:scalance_x208:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x208pro_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x208pro:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:scalance_x208pro_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.5 OR cpe:2.3:h:siemens:scalance_x208pro:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x212-2_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x212-2:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:scalance_x212-2_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.5 OR cpe:2.3:h:siemens:scalance_x212-2:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x212-2ld_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x212-2ld:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:scalance_x212-2ld_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.5 OR cpe:2.3:h:siemens:scalance_x212-2ld:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x216_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x216:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:scalance_x216_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.5 OR cpe:2.3:h:siemens:scalance_x216:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x224_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x224:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:scalance_x224_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.5 OR cpe:2.3:h:siemens:scalance_x224:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_xf204_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_xf204:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:scalance_xf204_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.5 OR cpe:2.3:h:siemens:scalance_xf204:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_xf204-2_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_xf204-2:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:scalance_xf204-2_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.5 OR cpe:2.3:h:siemens:scalance_xf204-2:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_xf206-1_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_xf206-1:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:scalance_xf206-1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.5 OR cpe:2.3:h:siemens:scalance_xf206-1:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_xf208_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_xf208:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:scalance_xf208_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.5 OR cpe:2.3:h:siemens:scalance_xf208:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x202-2p_irt_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.5.1 OR cpe:2.3:h:siemens:scalance_x202-2p_irt:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Sep. 14, 2021
Action Type Old Value New Value Changed Description 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), SCALANCE X204-2FM (All versions), SCALANCE X204-2LD (incl. SIPLUS NET variant) (All versions), SCALANCE X204-2LD TS (All versions), SCALANCE X204-2TS (All versions), SCALANCE X206-1 (All versions), SCALANCE X206-1LD (All versions), SCALANCE X208 (incl. SIPLUS NET variant) (All versions), SCALANCE X208PRO (All versions), SCALANCE X212-2 (incl. SIPLUS NET variant) (All versions), SCALANCE X212-2LD (All versions), SCALANCE X216 (All versions), SCALANCE X224 (All versions), SCALANCE XF201-3P IRT (All versions < 5.5.1), SCALANCE XF202-2P IRT (All versions < 5.5.1), SCALANCE XF204 (All versions), SCALANCE XF204 IRT (All versions < 5.5.1), SCALANCE XF204-2 (incl. SIPLUS NET variant) (All versions), SCALANCE XF204-2BA IRT (All versions < 5.5.1), SCALANCE XF206-1 (All versions), SCALANCE XF208 (All versions). 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. 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. -
Initial Analysis by [email protected]
Apr. 30, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://cert-portal.siemens.com/productcert/pdf/ssa-187092.pdf No Types Assigned https://cert-portal.siemens.com/productcert/pdf/ssa-187092.pdf Patch, Vendor Advisory Added CWE NIST CWE-787 Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x200-4p_irt_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.5.1 OR cpe:2.3:h:siemens:scalance_x200-4p_irt:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x201-3p_irt_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.5.1 OR cpe:2.3:h:siemens:scalance_x201-3p_irt:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x201-3p_irt_pro_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.5.1 OR cpe:2.3:h:siemens:scalance_x201-3p_irt_pro:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x202-2_irt_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.5.1 OR cpe:2.3:h:siemens:scalance_x202-2_irt:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x202-2p_irt_pro_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.5.1 OR cpe:2.3:h:siemens:scalance_x202-2p_irt_pro:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x204_irt_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.5.1 OR cpe:2.3:h:siemens:scalance_x204_irt:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x204_irt_pro_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.5.1 OR cpe:2.3:h:siemens:scalance_x204_irt_pro:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x204-2_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x204-2:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x204-2fm_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x204-2fm:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x204-2ld_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x204-2ld:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x204-2ld_ts_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x204-2ld_ts:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x204-2ts_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x204-2ts:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x206-1_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x206-1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x206-1ld_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x206-1ld:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x208_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x208:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x208pro_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x208pro:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x212-2_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x212-2:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x212-2ld_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x212-2ld:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x216_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x216:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_x224_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_x224:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_xf201-3p_irt_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.5.1 OR cpe:2.3:h:siemens:scalance_xf201-3p_irt:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_xf202-2p_irt_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.5.1 OR cpe:2.3:h:siemens:scalance_xf202-2p_irt:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_xf204_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_xf204:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_xf204_irt_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.5.1 OR cpe:2.3:h:siemens:scalance_xf204_irt:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_xf204-2_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_xf204-2:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_xf204-2ba_irt_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.5.1 OR cpe:2.3:h:siemens:scalance_xf204-2ba_irt:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_xf206-1_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_xf206-1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_xf208_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_xf208:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-25668 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-25668
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.23 }} -0.10%
score
0.61881
percentile