CVE-2020-13934
HIGH severity · CVSS 7.5 · CWE-401
7.5CVSS HIGH
Summary
An h2c direct connection to Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56 did not release the HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient number of such requests were made, an OutOfMemoryException could occur leading to a denial of service.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)64%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (4)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://lists.apache.org/thread.html/r61f411cf82488d6ec213063fc15feeeb88e31b0ca9c29652ee4f962e%40%3Cannounce.tomcat.apache.org%3EAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.htmlAdvisory
- https://lists.apache.org/thread.html/ra072b1f786e7d139e86f1d1145572e0ff71cef38a96d9c6f5362aac8%40%3Cdev.tomcat.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2020/07/msg00017.htmlAdvisory
- https://security.netapp.com/advisory/ntap-20200724-0003/Advisory
- https://usn.ubuntu.com/4596-1/Advisory
- https://www.debian.org/security/2020/dsa-4727Advisory