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CVE-2019-17569

MEDIUMCVSS 4.8/10EPSS 8.87%

Last modified

CVE-2019-17569 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. The refactoring present in Apache Tomcat 9.0.28 to 9.0.30, 8.5.48 to 8.5.50 and 7.0.98 to 7.0.99 introduced a regression. The result of the regression was that invalid Transfer-Encoding headers were incorrectly processed leading 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. EPSS estimates a 8.87% chance of exploitation in the next 30 days.

Description

The refactoring present in Apache Tomcat 9.0.28 to 9.0.30, 8.5.48 to 8.5.50 and 7.0.98 to 7.0.99 introduced a regression. The result of the regression was that invalid Transfer-Encoding headers were incorrectly processed leading 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.

Metrics

CVSS 3.1
4.8/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS Probability
8.87%

94.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ApacheTomcat>= 7.0.98, <= 7.0.99
ApacheTomcat>= 8.5.48, <= 8.5.50
ApacheTomcat>= 9.0.28, <= 9.0.30
ApacheTomee7.0.7
OpensuseLeap15.1
NetappData Availability ServicesAll versions
NetappOncommand System Manager>= 3.0.0, <= 3.1.3
DebianDebian Linux9.0
DebianDebian Linux10.0
OracleAgile Engineering Data Management6.2.1.0
OracleAgile Plm9.3.3
OracleAgile Plm9.3.5
OracleAgile Plm9.3.6
OracleCommunications Instant Messaging Server10.0.1.4.0
OracleHealth Sciences Empirica Inspections1.0.1.2
OracleHealth Sciences Empirica Signal7.3.3
OracleHospitality Guest Access4.2.0
OracleHospitality Guest Access4.2.1
OracleInstantis Enterprisetrack>= 17.1, <= 17.3
OracleMysql Enterprise Monitor<= 4.0.12
OracleMysql Enterprise Monitor>= 8.0.0, <= 8.0.20
OracleTransportation Management6.3.7
OracleWorkload Manager12.2.0.1
OracleWorkload Manager18c
OracleWorkload Manager19c

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-17569?
The refactoring present in Apache Tomcat 9.0.28 to 9.0.30, 8.5.48 to 8.5.50 and 7.0.98 to 7.0.99 introduced a regression. The result of the regression was that invalid Transfer-Encoding headers were incorrectly processed leading 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.
How severe is CVE-2019-17569?
CVE-2019-17569 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 8.87% probability of exploitation in the next 30 days.
How do I fix CVE-2019-17569?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-17569?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST