CVE-2019-9970 Other in n/a
Attackers can spoof URLs using IDN homographs in Signal messages, tricking users into clicking malicious links due to visual character similarity.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2019-9970?
CVE-2019-9970 is a medium-severity vulnerability in n/a, published on 24 Mar 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Which versions are affected by CVE-2019-9970?
It affects 2 products.
Products include Signal Private Messenger, Signal Signal-Desktop.
How do I fix CVE-2019-9970?
No fix has been published for CVE-2019-9970 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-9970 being exploited?
There is no known exploitation of CVE-2019-9970 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-9p53-vpmw-2w5c.