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 HTT

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 Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely.

Published 2020-02-24 22:15:12

Updated 2021-05-04 19:19:14

Source Apache Software Foundation

View at NVD, CVE.org

Products affected by CVE-2020-1935

Debian » Debian Linux » Version: 8.0
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Matching versions
Debian » Debian Linux » Version: 9.0
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Matching versions
Debian » Debian Linux » Version: 10.0
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Matching versions
Apache » Tomcat
Versions from including (>=) 8.5.0 and up to, including, (<=) 8.5.50
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
Matching versions
Apache » Tomcat
Versions from including (>=) 7.0.0 and up to, including, (<=) 7.0.99
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
Matching versions
Apache » Tomcat
Versions from including (>=) 9.0.0 and up to, including, (<=) 9.0.30
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone1
cpe:2.3:a:apache:tomcat:9.0.0:milestone1:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone10
cpe:2.3:a:apache:tomcat:9.0.0:milestone10:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone11
cpe:2.3:a:apache:tomcat:9.0.0:milestone11:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone12
cpe:2.3:a:apache:tomcat:9.0.0:milestone12:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone13
cpe:2.3:a:apache:tomcat:9.0.0:milestone13:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone14
cpe:2.3:a:apache:tomcat:9.0.0:milestone14:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone15
cpe:2.3:a:apache:tomcat:9.0.0:milestone15:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone16
cpe:2.3:a:apache:tomcat:9.0.0:milestone16:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone17
cpe:2.3:a:apache:tomcat:9.0.0:milestone17:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone18
cpe:2.3:a:apache:tomcat:9.0.0:milestone18:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone19
cpe:2.3:a:apache:tomcat:9.0.0:milestone19:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone2
cpe:2.3:a:apache:tomcat:9.0.0:milestone2:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone20
cpe:2.3:a:apache:tomcat:9.0.0:milestone20:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone21
cpe:2.3:a:apache:tomcat:9.0.0:milestone21:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone22
cpe:2.3:a:apache:tomcat:9.0.0:milestone22:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone23
cpe:2.3:a:apache:tomcat:9.0.0:milestone23:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone24
cpe:2.3:a:apache:tomcat:9.0.0:milestone24:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone25
cpe:2.3:a:apache:tomcat:9.0.0:milestone25:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone26
cpe:2.3:a:apache:tomcat:9.0.0:milestone26:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone27
cpe:2.3:a:apache:tomcat:9.0.0:milestone27:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone3
cpe:2.3:a:apache:tomcat:9.0.0:milestone3:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone4
cpe:2.3:a:apache:tomcat:9.0.0:milestone4:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone5
cpe:2.3:a:apache:tomcat:9.0.0:milestone5:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone6
cpe:2.3:a:apache:tomcat:9.0.0:milestone6:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone7
cpe:2.3:a:apache:tomcat:9.0.0:milestone7:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone8
cpe:2.3:a:apache:tomcat:9.0.0:milestone8:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0 Update Milestone9
cpe:2.3:a:apache:tomcat:9.0.0:milestone9:*:*:*:*:*:*
Matching versions
Apache » Tomcat » Version: 9.0.0
cpe:2.3:a:apache:tomcat:9.0.0:-:*:*:*:*:*:*
Matching versions
Oracle » Mysql Enterprise Monitor
Versions from including (>=) 8.0.0 and up to, including, (<=) 8.0.20
cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:*
Matching versions
Oracle » Mysql Enterprise Monitor
Versions from including (>=) 4.0.0 and up to, including, (<=) 4.0.12
cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:*
Matching versions
Oracle » Agile Engineering Data Management » Version: 6.2.1.0
cpe:2.3:a:oracle:agile_engineering_data_management:6.2.1.0:*:*:*:*:*:*:*
Matching versions
Oracle » Transportation Management » Version: 6.3.7
cpe:2.3:a:oracle:transportation_management:6.3.7:*:*:*:*:*:*:*
Matching versions
Oracle » Siebel Ui Framework
Versions up to, including, (<=) 20.5
cpe:2.3:a:oracle:siebel_ui_framework:*:*:*:*:*:*:*:*
Matching versions
Oracle » Hospitality Guest Access » Version: 4.2.0
cpe:2.3:a:oracle:hospitality_guest_access:4.2.0:*:*:*:*:*:*:*
Matching versions
Oracle » Hospitality Guest Access » Version: 4.2.1
cpe:2.3:a:oracle:hospitality_guest_access:4.2.1:*:*:*:*:*:*:*
Matching versions
Oracle » Retail Order Broker » Version: 15.0
cpe:2.3:a:oracle:retail_order_broker:15.0:*:*:*:*:*:*:*
Matching versions
Oracle » Agile Product Lifecycle Management » Version: 9.3.3
cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.3:*:*:*:*:*:*:*
Matching versions
Oracle » Agile Product Lifecycle Management » Version: 9.3.5
cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.5:*:*:*:*:*:*:*
Matching versions
Oracle » Agile Product Lifecycle Management » Version: 9.3.6
cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.6:*:*:*:*:*:*:*
Matching versions
Oracle » Instantis Enterprisetrack
Versions from including (>=) 17.1 and up to, including, (<=) 17.3
cpe:2.3:a:oracle:instantis_enterprisetrack:*:*:*:*:*:*:*:*
Matching versions
Oracle » Communications Instant Messaging Server » Version: 10.0.1.4.0
cpe:2.3:a:oracle:communications_instant_messaging_server:10.0.1.4.0:*:*:*:*:*:*:*
Matching versions
Oracle » Communications Element Manager » Version: 8.1.1
cpe:2.3:a:oracle:communications_element_manager:8.1.1:*:*:*:*:*:*:*
Matching versions
Oracle » Communications Element Manager » Version: 8.2.0
cpe:2.3:a:oracle:communications_element_manager:8.2.0:*:*:*:*:*:*:*
Matching versions
Oracle » Communications Element Manager » Version: 8.2.1
cpe:2.3:a:oracle:communications_element_manager:8.2.1:*:*:*:*:*:*:*
Matching versions
Oracle » Hyperion Infrastructure Technology » Version: 11.1.2.4
cpe:2.3:a:oracle:hyperion_infrastructure_technology:11.1.2.4:*:*:*:*:*:*:*
Matching versions
Oracle » Workload Manager » Version: 12.2.0.1
cpe:2.3:a:oracle:workload_manager:12.2.0.1:*:*:*:*:*:*:*
Matching versions
Oracle » Workload Manager » Version: 18C
cpe:2.3:a:oracle:workload_manager:18c:*:*:*:*:*:*:*
Matching versions
Oracle » Workload Manager » Version: 19C
cpe:2.3:a:oracle:workload_manager:19c:*:*:*:*:*:*:*
Matching versions
Oracle » Health Sciences Empirica Inspections » Version: 1.0.1.2
cpe:2.3:a:oracle:health_sciences_empirica_inspections:1.0.1.2:*:*:*:*:*:*:*
Matching versions
Oracle » Health Sciences Empirica Signal » Version: 7.3.3
cpe:2.3:a:oracle:health_sciences_empirica_signal:7.3.3:*:*:*:*:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 16.04 LTS Edition
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
Matching versions
Opensuse » Leap » Version: 15.1
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
Matching versions
Netapp » Oncommand System Manager
Versions from including (>=) 3.0.0 and up to, including, (<=) 3.1.3
cpe:2.3:a:netapp:oncommand_system_manager:*:*:*:*:*:*:*:*
Matching versions
Netapp » Data Availability Services » Version: N/A
cpe:2.3:a:netapp:data_availability_services:-:*:*:*:*:*:*:*
Matching versions

Threat overview for CVE-2020-1935

Top countries where our scanners detected CVE-2020-1935

Top open port discovered on systems with this issue 80

IPs affected by CVE-2020-1935 304,035

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2020-1935!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2020-1935

EPSS FAQ

0.73%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 81 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-1935

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:N	8.6	4.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: None
4.8	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N	2.2	2.5	NIST
Attack Vector: Network Attack Complexity: High Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: Low Integrity: Low Availability: None

CWE ids for CVE-2020-1935

CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-1935

https://www.oracle.com/security-alerts/cpuoct2020.html

Oracle Critical Patch Update Advisory - October 2020
Third Party Advisory

CVEs referencing this url
https://lists.apache.org/thread.html/rc31cbabb46cdc58bbdd8519a8f64b6236b2635a3922bbeba0f0e3743@%3Ccommits.tomee.apache.org%3E

[jira] [Created] (TOMEE-2790) TomEE plus(7.0.7) is affected by CVE-2020-1935 & CVE-2019-17569 vulnerabilities - Pony Mail
Mailing List;Vendor Advisory

CVEs referencing this url
https://www.oracle.com/security-alerts/cpujul2020.html

Oracle Critical Patch Update Advisory - July 2020
Third Party Advisory

CVEs referencing this url
https://lists.apache.org/thread.html/ra5dee390ad2d60307b8362505c059cd6a726de4d146d63dfce1e05e7@%3Cusers.tomcat.apache.org%3E

Pony Mail!
Mailing List;Vendor Advisory
https://lists.apache.org/thread.html/r9ce7918faf347e7aac32be930bf26c233b0b140fe37af0bb294158b6@%3Cdev.tomcat.apache.org%3E

Pony Mail!
Mailing List;Vendor Advisory
https://www.debian.org/security/2020/dsa-4680

Debian -- Security Information -- DSA-4680-1 tomcat9
Third Party Advisory

CVEs referencing this url
https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html

[SECURITY] [DLA 2133-1] tomcat7 security update
Mailing List;Third Party Advisory

CVEs referencing this url
https://lists.apache.org/thread.html/r660cd379afe346f10d72c0eaa8459ccc95d83aff181671b7e9076919@%3Cusers.tomcat.apache.org%3E

Re: CVE-2020-1935 - Pony Mail
Mailing List;Vendor Advisory
https://www.debian.org/security/2020/dsa-4673

Debian -- Security Information -- DSA-4673-1 tomcat8
Third Party Advisory

CVEs referencing this url
https://security.netapp.com/advisory/ntap-20200327-0005/

February 2020 Apache Tomcat Vulnerabilities in NetApp Products | NetApp Product Security
Third Party Advisory

CVEs referencing this url
https://usn.ubuntu.com/4448-1/

USN-4448-1: Tomcat vulnerabilities | Ubuntu security notices | Ubuntu
Third Party Advisory

CVEs referencing this url
https://www.oracle.com/security-alerts/cpujan2021.html

Oracle Critical Patch Update Advisory - January 2021
Third Party Advisory

CVEs referencing this url
https://lists.apache.org/thread.html/r441c1f30a252bf14b07396286f6abd8089ce4240e91323211f1a2d75@%3Cusers.tomcat.apache.org%3E

CVE-2020-1935 - Pony Mail
Mailing List;Vendor Advisory
https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78@%3Ccommits.tomee.apache.org%3E

[jira] [Commented] (TOMEE-2790) TomEE plus(7.0.7) is affected by CVE-2020-1935 & CVE-2019-17569 vulnerabilities - Pony Mail
Mailing List;Vendor Advisory

CVEs referencing this url
https://lists.apache.org/thread.html/r80e9c8417c77d52c62809168b96912bda70ddf7748f19f8210f745b1@%3Cusers.tomcat.apache.org%3E

RE: CVE-2020-1935 - Pony Mail
Mailing List;Vendor Advisory
https://lists.apache.org/thread.html/rd547be0c9d821b4b1000a694b8e58ef9f5e2d66db03a31dfe77c4b18@%3Cusers.tomcat.apache.org%3E

RE: CVE-2020-1935 - Pony Mail
Mailing List;Vendor Advisory
https://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3E

[SECURITY] CVE-2020-1935 HTTP Request Smuggling - Pony Mail
Mailing List;Vendor Advisory
https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html

[SECURITY] [DLA 2209-1] tomcat8 security update
Mailing List;Third Party Advisory

CVEs referencing this url
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.html

[security-announce] openSUSE-SU-2020:0345-1: important: Security update
Broken Link;Mailing List;Third Party Advisory

CVEs referencing this url