CVE-2019-9970
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Signal Private Messenger
PublishedMar 24, 2019
First seenMar 24, 2019
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| signal private_messenger | v ≤ 4.35.3 | — |
| signal signal-desktop | v ≤ 1.23.1 | — |
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