CVE-2019-9970
6.5 · MEDIUMOverview
CVE-2019-9970 is a medium-severity vulnerability affecting signal private_messenger. It was published on March 24, 2019 and has a CVSS 3.0 base score of 6.5 (MEDIUM).
This vulnerability has a CVSS 3.0 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Open Whisper Signal (aka Signal-Desktop) through 1.23.1 and the Signal Private Messenger application through 4.35.3 for Android are vulnerable to an IDN homograph attack when displaying messages containing URLs. This occurs because the application produces a clickable link even if (for example) Latin and Cyrillic characters exist in the same domain name, and the available font has an identical representation of characters from different alphabets.
Remediation
Check the references section for vendor advisories and patches from signal. Update private_messenger 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 |
|---|---|---|---|
| signal | private_messenger | 0 | Affected |
| signal | signal-desktop | 0 | Affected |
Frequently Asked Questions
What is CVE-2019-9970?
CVE-2019-9970 is a medium-severity vulnerability affecting signal private_messenger. It was published on March 24, 2019 and has a CVSS 3.0 base score of 6.5 (MEDIUM).
How severe is CVE-2019-9970?
This vulnerability has a CVSS 3.0 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2019-9970?
Check the references section for vendor advisories and patches from signal. Update private_messenger 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-2019-9970?
CyberStrike's AI-powered security agents can automatically detect CVE-2019-9970 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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