PT-2022-17495 · Eclipse · Eclipse Californium
Nurullah Erinola
·
Published
2022-07-29
·
Updated
2022-08-05
·
CVE-2022-2576
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Eclipse Californium versions 2.0.0 through 2.7.2
Eclipse Californium versions 3.0.0 through 3.5.0
Description
The issue occurs when a DTLS resumption handshake falls back to a DTLS full handshake on a parameter mismatch without using a HelloVerifyRequest. This can result in message amplification, potentially leading to DDoS attacks on other peers, and high CPU load, leading to a DoS attack on the own peer. The misbehavior is specific to configurations where DTLS VERIFY PEERS ON RESUMPTION THRESHOLD values are larger than 0, especially when used with certificate-based cipher suites.
Recommendations
For Eclipse Californium versions 2.0.0 through 2.7.2, consider updating to a version where this issue is fixed.
For Eclipse Californium versions 3.0.0 through 3.5.0, consider updating to a version where this issue is fixed.
As a temporary workaround, consider setting DTLS VERIFY PEERS ON RESUMPTION THRESHOLD to 0 to prevent the misbehavior, but be aware of the potential security implications of this change.
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Eclipse Californium