CVE-2020-11996 (GCVE-0-2020-11996)

Vulnerability from cvelistv5 – Published: 2020-06-26 16:27 – Updated: 2024-08-04 11:48
VLAI
Summary
A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent HTTP/2 connections, the server could become unresponsive.
Severity
No CVSS data available.
CWE
  • Denial of Service
Assigner
References
URL Tags
https://lists.apache.org/thread.html/r5541ef6b6b6… x_refsource_CONFIRM
https://lists.apache.org/thread.html/ra7092f74925… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rb4ee49ecc4c… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rb820f1a2a02… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r8f748458945… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r74f5a8204ef… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rea65d6ef2e4… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rc80b96b4b96… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r93ca628ef3a… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r8f3d416c193… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r9ad911fe494… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/ref0339792ac… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r6c29801370a… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r3ea96d8f36d… mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
https://www.debian.org/security/2020/dsa-4727 vendor-advisoryx_refsource_DEBIAN
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://lists.apache.org/thread.html/r2529016c311… mailing-listx_refsource_MLIST
https://www.oracle.com/security-alerts/cpuoct2020.html x_refsource_MISC
https://security.netapp.com/advisory/ntap-2020070… x_refsource_CONFIRM
https://usn.ubuntu.com/4596-1/ vendor-advisoryx_refsource_UBUNTU
https://www.oracle.com/security-alerts/cpujan2021.html x_refsource_MISC
https://lists.apache.org/thread.html/r5a4f80a6acc… mailing-listx_refsource_MLIST
Impacted products
Vendor Product Version
Apache Apache Tomcat Affected: 10.0.0-M1 to 10.0.0-M5
Affected: 9.0.0.M1 to 9.0.35
Affected: 8.5.0 to 8.5.55
Create a notification for this product.
Show details on NVD website
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.