CVE-2021-27186 Null dereference in n/a
A NULL pointer dereference in Fluent Bit allows attackers to cause a denial of service via unvalidated memory allocation returns.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-27186?
CVE-2021-27186 is a high-severity vulnerability in n/a, published on 10 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Fluent Bit 1.6.10 has a NULL pointer dereference when an flb_malloc return value is not validated by flb_avro.c or http_server/api/v1/metrics.c.
Weakness: CWE-476
Which versions are affected by CVE-2021-27186?
1 open source package ship an affected version, including fluent-bit. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
fluent-bit Bitnami | From 1.6.10 | 1.6.11 |
Products include Treasuredata Fluent Bit.
How do I fix CVE-2021-27186?
Upgrade fluent-bit to 1.6.11 or later.
Is CVE-2021-27186 being exploited?
There is no known exploitation of CVE-2021-27186 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as BIT-fluent-bit-2021-27186, GHSA-gjm8-qc7w-3xxp.