Executive Summary

Informations
Name CVE-2020-9484 First vendor Publication 2020-05-20
Vendor Cve Last vendor Modification 2020-10-20

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 7
Base Score 7 Environmental Score 7
impact SubScore 5.9 Temporal Score 7
Exploitabality Sub Score 1
 
Attack Vector Local Attack Complexity High
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:M/Au:N/C:P/I:P/A:P)
Cvss Base Score 4.4 Attack Range Local
Cvss Impact Score 6.4 Attack Complexity Medium
Cvss Expoit Score 3.4 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter="null" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-9484

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-502 Deserialization of Untrusted Data

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 484
Application 3
Os 1
Os 3
Os 2
Os 1

Snort® IPS/IDS

Date Description
2020-07-07 Apache Tomcat FileStore directory traversal attempt
RuleID : 54162 - Revision : 1 - Type : SERVER-WEBAPP

Sources (Detail)

Source Url
CONFIRM https://kc.mcafee.com/corporate/index?page=content&id=SB10332
https://security.netapp.com/advisory/ntap-20200528-0005/
DEBIAN https://www.debian.org/security/2020/dsa-4727
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
FULLDISC http://seclists.org/fulldisclosure/2020/Jun/6
GENTOO https://security.gentoo.org/glsa/202006-21
MISC http://packetstormsecurity.com/files/157924/Apache-Tomcat-CVE-2020-9484-Proof...
https://lists.apache.org/thread.html/r77eae567ed829da9012cadb29af17f2df8fa23b...
https://www.oracle.com/security-alerts/cpujul2020.html
https://www.oracle.com/security-alerts/cpuoct2020.html
MLIST https://lists.apache.org/thread.html/r123b3ebe389f46f9d337923f393cdae4d3e9b78...
https://lists.apache.org/thread.html/r26950738f4b4ca2d256597cf391d52d3450fa66...
https://lists.apache.org/thread.html/r7bc247fffcb1d58415215c861d2354bd653c862...
https://lists.apache.org/thread.html/raa4123e472175bb052fbba165d37187cea923f7...
https://lists.apache.org/thread.html/rb1c0fb105ce2b93b7ec6fc1b77dd208022621a9...
https://lists.apache.org/thread.html/rc8473b08abdf3c16494ed817bec1717a0ee0c80...
https://lists.apache.org/thread.html/rf59c72572b9fee674a5d5cc6afeca4ffc3918a0...
https://lists.apache.org/thread.html/rf70f53af27e04869bdac18b1fc14a3ee529e59e...
https://lists.debian.org/debian-lts-announce/2020/05/msg00020.html
https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html
https://lists.debian.org/debian-lts-announce/2020/07/msg00010.html
SUSE http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00057.html
UBUNTU https://usn.ubuntu.com/4448-1/

Alert History

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Date Informations
2020-10-21 05:23:09
  • Multiple Updates
2020-10-14 13:22:51
  • Multiple Updates
2020-10-13 17:22:54
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2020-09-03 01:31:20
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2020-08-11 05:22:56
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2020-07-18 21:23:10
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2020-07-15 09:23:10
  • Multiple Updates
2020-07-13 05:22:51
  • Multiple Updates
2020-07-07 21:22:59
  • Multiple Updates
2020-06-26 09:22:51
  • Multiple Updates
2020-06-23 09:22:51
  • Multiple Updates
2020-06-16 00:24:59
  • Multiple Updates
2020-06-04 21:23:27
  • Multiple Updates
2020-06-04 00:22:54
  • Multiple Updates
2020-06-03 13:22:51
  • Multiple Updates
2020-05-29 05:22:52
  • Multiple Updates
2020-05-28 17:22:52
  • Multiple Updates
2020-05-28 00:22:53
  • Multiple Updates
2020-05-25 09:22:59
  • Multiple Updates
2020-05-25 00:23:00
  • Multiple Updates
2020-05-24 05:22:59
  • Multiple Updates
2020-05-23 02:41:47
  • Multiple Updates
2020-05-23 02:41:08
  • First insertion