CVE-2021-41093 Account takeover when having only access to a user's short lived token
Attackers with valid short-lived tokens can take over accounts by changing email addresses, requiring an upgrade to Wire iOS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-41093?
CVE-2021-41093 is a high-severity authentication bypass vulnerability in wireapp wire-ios, published on 4 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Wire is an open source secure messenger. In affected versions if the an attacker gets an old but valid access token they can take over an account by changing the email. This issue has been resolved in version 3.86 which uses a new endpoint which additionally requires an authentication cookie. See wire-ios-sync-engine and wire-ios-transport references. This is the root advisory that pulls the changes together.
Which versions are affected by CVE-2021-41093?
It affects 1 product.
Products include Wire Wire.
How do I fix CVE-2021-41093?
No fix has been published for CVE-2021-41093 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-41093 being exploited?
There is no known exploitation of CVE-2021-41093 in the wild and no public exploit code.