CVE-2023-51079 mvel2 TimeOut error exists in the ParseTools.subCompileExpression method
An attacker can cause excessive CPU consumption in the MVEL library via crafted expressions, leading to a denial of service.
- 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-2023-51079?
CVE-2023-51079 is a medium-severity denial of service vulnerability in n/a, published on 27 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A long execution time can occur in the ParseTools.subCompileExpression method in MVEL 2.5.0.Final because of many Java class lookups. NOTE: the vendor disputes this because "the only thing that you could expect is that the parser will take a crazy amount of time to complete its task."
Which versions are affected by CVE-2023-51079?
2 open source packages ship an affected version, including org.mvel:mvel2. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.mvel:mvel2 Maven | All versions | None |
org.mvel:mvel2 Maven | All versions | None |
Products include Mvel Mvel.
How do I fix CVE-2023-51079?
No fix has been published for CVE-2023-51079 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-2023-51079 being exploited?
There is no known exploitation of CVE-2023-51079 in the wild and no public exploit code.
Sources
Also known as GHSA-h63j-xqx6-w58r.