Information disclosure in VMware Spring Session

CVE-2023-20866

In Spring Session version 3.0.0, the session id can be logged to the standard output stream. This vulnerability exposes sensitive information to those who have access to the application logs and can be used for session hijacking. Specifically, an application is vulnerable if it is using HeaderHttpSessionIdResolver.

Vulnerability class: Information Disclosure

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (49.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-20866: held from 0.007 to 0.007.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

  • VMware Spring Session — versions 3.0.0
  • Spring Session — versions Spring session versions 3.0.x prior to 3.0.1

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2023-20866?
CVE-2023-20866 is a medium-severity vulnerability in VMware Spring Session, classified under Information Disclosure. CVSS score: 6.5/10. Published 2023-04-13.
How severe is CVE-2023-20866?
Medium severity. CVSS v3 base score is 6.5 out of 10.