Detections
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Siemens SCALANCE XCM332 Allocation of Resources Without Limits or Throttling (CVE-2022-32205)
medium Tenable OT Security Plugin ID 500992
Synopsis
The remote OT asset is affected by a vulnerability.Description
A malicious server can serve excessive amounts of `Set-Cookie:` headers in a HTTP response to curl and curl < 7.84.0 stores all of them. A sufficiently large amount of (big) cookies make subsequent HTTP requests to this, or other servers to which the cookies match, create requests that become larger than the threshold that curl uses internally to avoid sending crazy large requests (1048576 bytes) and instead returns an error.This denial state might remain for as long as the same cookies are kept, match and haven't expired. Due to cookie matching rules, a server on `foo.example.com` can set cookies that also would match for `bar.example.com`, making it it possible for a sister server to effectively cause a denial of service for a sibling site on the same second level domain using this method.This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.
Solution
The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.Siemens has released an update for the SCALANCE XCM332 and recommends updating to the latest version:
- SCALANCE XCM332 (6GK5332-0GA01-2AC2): Update to V2.2 or later version
As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at the Siemens Industrial Security web page.
For further inquiries on security vulnerabilities in Siemens products and solutions, users should contact the Siemens ProductCERT.
For more information see the associated Siemens security advisory SSA-558014 in HTML and CSAF.
See Also
http://seclists.org/fulldisclosure/2022/Oct/28
https://cert-portal.siemens.com/productcert/pdf/ssa-333517.pdf
https://security.gentoo.org/glsa/202212-01
https://hackerone.com/reports/1569946
http://www.nessus.org/u?59ba3f3e
http://www.nessus.org/u?4af41997
https://cert-portal.siemens.com/productcert/html/ssa-558014.html
https://www.debian.org/security/2022/dsa-5197
https://security.netapp.com/advisory/ntap-20220915-0003/
https://support.apple.com/kb/HT213488
https://www.cisa.gov/news-events/ics-advisories/icsa-23-103-09
Plugin Details
Severity: Medium
ID: 500992
Version: 1.3
Type: remote
Family: Tenable.ot
Published: 4/11/2023
Updated: 7/24/2023
Supported Sensors: Tenable OT Security
Risk Information
VPR
Risk Factor: Low
Score: 2.9
CVSS v2
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.4
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS Score Source: CVE-2022-32205
CVSS v3
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.9
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:siemens:scalance_sc622-2c_firmware, cpe:/o:siemens:scalance_sc626-2c_firmware, cpe:/o:siemens:scalance_xcm332_firmware, cpe:/o:siemens:scalance_sc642-2c_firmware, cpe:/o:siemens:scalance_sc636-2c_firmware, cpe:/o:siemens:scalance_sc632-2c_firmware, cpe:/o:siemens:scalance_sc646-2c_firmware
Required KB Items: Tenable.ot/Siemens
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 7/7/2022
Vulnerability Publication Date: 7/7/2022
Reference Information
CVE: CVE-2022-32205