CVE-2021-25981 Talkyard - Insufficient Session Expiration
Attackers can reuse valid admin session tokens after logout to gain administrative privileges if they obtain the token via other means.
- 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-2021-25981?
CVE-2021-25981 is a critical authentication bypass vulnerability in debiki talkyard, published on 3 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In Talkyard, regular versions v0.2021.20 through v0.2021.33 and dev versions v0.2021.20 through v0.2021.34, are vulnerable to Insufficient Session Expiration. This may allow an attacker to reuse the admin’s still-valid session token even when logged-out, to gain admin privileges, given the attacker is able to obtain that token (via other, hypothetical attacks)
Weakness: CWE-613
Which versions are affected by CVE-2021-25981?
It affects 1 product.
Products include Talkyard Talkyard.
How do I fix CVE-2021-25981?
No fix has been published for CVE-2021-25981 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-2021-25981 being exploited?
There is no known exploitation of CVE-2021-25981 in the wild and no public exploit code.
Other vulnerabilities in debiki talkyard
Sources
Also known as GHSA-4jw2-24wg-vcf7.