CVE-2021-40511 Denial of service in n/a
An XML Entity Expansion vulnerability in OBDA Mastro allows attackers to cause a denial of service via billion laughs attack.
- 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-2021-40511?
CVE-2021-40511 is a high-severity denial of service vulnerability in n/a, published on 21 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OBDA systems’ Mastro 1.0 is vulnerable to XML Entity Expansion (aka “billion laughs”) attack allowing denial of service.
Weakness: CWE-776
Which versions are affected by CVE-2021-40511?
It affects 1 product.
Products include Obdasystems Mastro.
How do I fix CVE-2021-40511?
No fix has been published for CVE-2021-40511 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-40511 being exploited?
There is no known exploitation of CVE-2021-40511 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-cv78-jp3v-7557.