CVE-2021-0276 Steel-Belted Radius Carrier Edition: Remote code execution vulnerability when EAP Authentication is configured.
A stack-based buffer overflow in Juniper SBR Carrier allows remote attackers to execute code or cause denial of service when EAP authentication is enabled.
- 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-2021-0276?
CVE-2021-0276 is a critical memory corruption vulnerability in Juniper Networks SBR Carrier, published on 15 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A stack-based Buffer Overflow vulnerability in Juniper Networks SBR Carrier with EAP (Extensible Authentication Protocol) authentication configured, allows an attacker sending specific packets causing the radius daemon to crash resulting with a Denial of Service (DoS) or leading to remote code execution (RCE). By continuously sending this specific packets, an attacker can repeatedly crash the radius daemon, causing a sustained Denial of Service (DoS). This issue affects Juniper Networks SBR Carrier: 8.4.1 versions prior to 8.4.1R19; 8.5.0 versions prior to 8.5.0R10; 8.6.0 versions prior to 8.6.0R4.
Which versions are affected by CVE-2021-0276?
It affects 1 product.
Products include Juniper Steel-Belted Radius Carrier.
How do I fix CVE-2021-0276?
No fix has been published for CVE-2021-0276 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-0276 being exploited?
There is no known exploitation of CVE-2021-0276 in the wild and no public exploit code.
Sources
Also known as GHSA-rhq8-hg5g-9g9g.