CVE-2021-27335 Deserialization in n/a
Insecure Java deserialization in KollectApps allows remote attackers to execute arbitrary code via crafted serialized objects.
- 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-2021-27335?
CVE-2021-27335 is a critical unsafe deserialization vulnerability in n/a, published on 18 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
KollectApps before 4.8.16c is affected by insecure Java deserialization, leading to Remote Code Execution via a ysoserial.payloads.CommonsCollections parameter.
Weakness: CWE-502
Which versions are affected by CVE-2021-27335?
It affects 1 product.
Products include Kollectapp Kollect.
How do I fix CVE-2021-27335?
No fix has been published for CVE-2021-27335 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2021-27335 being exploited?
There is no known exploitation of CVE-2021-27335 in the wild and no public exploit code.
Sources
Also known as GHSA-2xp2-6xw3-mw59.