Information disclosure in Apache Tomcat
CVE-2021-24122
When serving resources from a network location using the NTFS file system, Apache Tomcat versions 10.0.0-M1 to 10.0.0-M9, 9.0.0.M1 to 9.0.39, 8.5.0 to 8.5.59 and 7.0.0 to 7.0.106 were susceptible to JSP source code disclosure in some configurations. The root cause was the unexpected behaviour of the JRE API File.getCanonicalPath() which in turn was caused by the inconsistent behaviour of the Windows API (FindFirstFileW) in some circumstances.
Vulnerability class: Information Disclosure
EPSS: 0.229 (97.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Apache Tomcat — versions 9.0.0, 10.0.0
- Apache Software Foundation Tomcat — versions Apache Tomcat 10, Apache Tomcat 9, Apache Tomcat 8.5
- Oracle Agile_plm — versions 9.3.3, 9.3.6
- Debian Debian_linux — versions 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (Mailing List, x_refsource_MISC, Vendor Advisory)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security@apache.org (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-24122?
- CVE-2021-24122 is a medium-severity vulnerability in Apache Tomcat, classified under Information Disclosure. CVSS score: 5.9/10. Published 2021-01-14.
- How severe is CVE-2021-24122?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2021-24122 known to be exploited?
- 15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.