CVE-2023-26556
9.1 · CRITICALOverview
CVE-2023-26556 is a critical-severity vulnerability affecting iofinnet tss-lib. It was published on April 21, 2023 and has a CVSS 3.1 base score of 9.1 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
io.finnet tss-lib before 2.0.0 can leak a secret key via a timing side-channel attack because it relies on the scalar-multiplication implementation in Go crypto/elliptic, which is not constant time (there is an if statement in a loop). One leak is in ecdsa/keygen/round_2.go. (bnb-chain/tss-lib and thorchain/tss are also affected.)
Remediation
Check the references section for vendor advisories and patches from iofinnet. Update tss-lib to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| iofinnet | tss-lib | >= 0, < 2.0.0 | Affected |
References
Frequently Asked Questions
What is CVE-2023-26556?
CVE-2023-26556 is a critical-severity vulnerability affecting iofinnet tss-lib. It was published on April 21, 2023 and has a CVSS 3.1 base score of 9.1 (CRITICAL).
How severe is CVE-2023-26556?
This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2023-26556?
Check the references section for vendor advisories and patches from iofinnet. Update tss-lib to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2023-26556?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-26556 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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