Executive Summary

Informations
Name CVE-2020-13934 First vendor Publication 2020-07-14
Vendor Cve Last vendor Modification 2021-07-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13934

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-476 NULL Pointer Dereference
50 % CWE-401 Failure to Release Memory Before Removing Last Reference ('Memory Leak')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 524

Snort® IPS/IDS

Date Description
2020-10-22 Apache Tomcat HTTP/2 denial of service attempt
RuleID : 55801 - Revision : 1 - Type : SERVER-WEBAPP
2020-10-22 Apache Tomcat HTTP/2 denial of service attempt
RuleID : 55800 - Revision : 1 - Type : SERVER-WEBAPP

Sources (Detail)

Source Url
CONFIRM https://security.netapp.com/advisory/ntap-20200724-0003/
DEBIAN https://www.debian.org/security/2020/dsa-4727
MISC https://lists.apache.org/thread.html/r61f411cf82488d6ec213063fc15feeeb88e31b0...
https://www.oracle.com/security-alerts/cpuApr2021.html
https://www.oracle.com/security-alerts/cpujan2021.html
https://www.oracle.com/security-alerts/cpuoct2020.html
MLIST https://lists.apache.org/thread.html/ra072b1f786e7d139e86f1d1145572e0ff71cef3...
https://lists.debian.org/debian-lts-announce/2020/07/msg00017.html
N/A https://www.oracle.com//security-alerts/cpujul2021.html
SUSE http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.html
UBUNTU https://usn.ubuntu.com/4596-1/

Alert History

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Date Informations
2021-08-05 01:37:02
  • Multiple Updates
2021-07-21 17:23:38
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2021-07-21 05:23:04
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2021-07-16 01:35:39
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2021-06-15 00:23:08
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2021-05-05 01:38:35
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2021-05-04 13:49:14
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2021-04-22 02:59:54
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2021-01-20 21:23:21
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2020-12-08 01:29:06
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2020-10-28 00:22:56
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2020-10-27 00:23:12
  • Multiple Updates
2020-10-22 21:23:14
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2020-10-21 05:23:02
  • Multiple Updates
2020-09-03 01:29:34
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2020-07-30 05:22:48
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2020-07-28 09:22:46
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2020-07-24 21:23:00
  • Multiple Updates
2020-07-23 00:22:46
  • Multiple Updates
2020-07-18 21:23:04
  • Multiple Updates
2020-07-17 21:23:08
  • Multiple Updates
2020-07-14 21:23:05
  • First insertion