ICSA-21-159-08: Siemens TIM 1531 IRC
CISA advisory · released 2021-06-08
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 2, 2025-05-06 (final)
CISA's summary
Summary: The latest update for TIM 1531 IRC fixes a vulnerability that could allow a remote attacker to cause a denial-of-service under certain circumstances. Siemens has released an update for the TIM 1531 IRC and recommends to update to the latest version.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | TIM 1531 IRC (incl. SIPLUS NET variants) | <V2.2 |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2018-0732 — CVE-2018-0732 · CWE-400
During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack.
Acknowledgments, as the advisory lists them
- Siemens ProductCERT: reporting this vulnerability to CISA.
The advisory's legal notice
Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter "License Terms"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use.
Sources
DeSpy's copy of this version is dated 2026-09-28.
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