CVE-2021-32163 Privilege escalation in MOSN
Attackers can escalate privileges in MOSN by exploiting case-sensitive JWT authorization checks, requiring an upgrade to secure the service mesh.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-32163?
CVE-2021-32163 is a critical authentication bypass vulnerability in n/a, published on 17 Feb 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Authentication vulnerability in MOSN v.0.23.0 allows attacker to escalate privileges via case-sensitive JWT authorization.
Weakness: CWE-863
Which versions are affected by CVE-2021-32163?
3 open source packages ship an affected version, including mosn.io/mosn. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mosn.io/mosn Go | All versions | 0.23.0 |
mosn.io/mosn Go | All versions | 0.23.0 |
mosn.io/mosn Go | All versions | 0.23.0 |
Products include Linuxfoundation Modular Open Smart Network.
How do I fix CVE-2021-32163?
Upgrade mosn.io/mosn to 0.23.0 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-32163 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-32163 exists.
Sources
Also known as GHSA-5vx9-j5cw-47vq, GO-2023-1582.