CVE-2021-33420 replicator vulnerable to Deserialization of Untrusted Data
Remote attackers can execute arbitrary code by exploiting a deserialization vulnerability in the replicator library's fromSerializable function.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-33420?
CVE-2021-33420 is a critical unsafe deserialization vulnerability in n/a, published on 15 Dec 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A deserialization issue discovered in inikulin replicator before 1.0.4 allows remote attackers to run arbitrary code via the fromSerializable function in TypedArray object.
Weakness: CWE-502
Which versions are affected by CVE-2021-33420?
2 open source packages ship an affected version, including replicator. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
replicator npm | All versions | 1.0.4 |
replicator npm | All versions | 1.0.4 |
Products include Replicator Project Replicator.
How do I fix CVE-2021-33420?
Upgrade replicator to 1.0.4 or later.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2021-33420 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-33420 exists.
Sources
Also known as GHSA-hw46-vg6w-88fj.