Vulnerability in Apache Tomcat
CVE-2020-1935
In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led to a possibility of HTTP R…
Vulnerability class: HTTP Request Smuggling
EPSS: 0.094 (94.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.
Affected products
- Apache Tomcat — versions Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50, 7.0.0 to 7.0.99
- Apache Tomcat — versions 9.0.0
- Netapp Data_availability_services
- Netapp Oncommand_system_manager
- Oracle Agile_engineering_data_management — versions 6.2.1.0
- Oracle Agile_product_lifecycle_management — versions 9.3.3, 9.3.5, 9.3.6
- Oracle Communications_element_manager — versions 8.1.1, 8.2.0, 8.2.1
- Oracle Communications_instant_messaging_server — versions 10.0.1.4.0
- Oracle Health_sciences_empirica_inspections — versions 1.0.1.2
- Oracle Health_sciences_empirica_signal — versions 7.3.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (Vendor Advisory, mailing-list, x_refsource_MLIST, Mailing List)
- security@apache.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security@apache.org (vendor-advisory, Mailing List, Third Party Advisory, Broken Link, x_refsource_SUSE)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- security@apache.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- security@apache.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security@apache.org (Third Party Advisory, x_refsource_MISC)
- security@apache.org (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-1935?
- CVE-2020-1935 is a medium-severity vulnerability in Apache Tomcat, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 4.8/10. Published 2020-02-24.
- How severe is CVE-2020-1935?
- Medium severity. CVSS v3 base score is 4.8 out of 10.
- Is CVE-2020-1935 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.