High CPU Usage in Eclipse Jetty due to Malformed TLS Frame
CVE-2021-28165

7.5HIGH

Key Information:

Vendor

The Eclipse Foundation

Status
Eclipse Jetty
Vendor
CVE Published:
1 April 2021

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 13%

What is CVE-2021-28165?

In Eclipse Jetty versions 7.2.2 through 9.4.38, as well as Jetty versions 10.0.0.alpha0 up to 10.0.1, and 11.0.0.alpha0 to 11.0.1, a vulnerability exists that can result in a denial of service. Specifically, upon receiving a large invalid TLS frame, the CPU usage can spike to 100%, leading to potential system unavailability. This flaw poses significant risks to services leveraging these versions, making it essential for affected users to update their Jetty installations.

Affected Version(s)

Eclipse Jetty 7.2.2

Eclipse Jetty <= 9.4.38

Eclipse Jetty 10.0.0.alpha0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

Jetty_v9.4.31_CVE-2021-28165
Created by hshivhare67

References

https://github.com/eclipse/jetty.project/security/advisor...
x_refsource_CONFIRM
https://lists.apache.org/thread.html/r17e26cf9a1e3cbc0952...
mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r5f172f2dd8fb02f032e...
mailing-listx_refsource_MLIST

EPSS Score

13% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.