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Deserialization of Untrusted Data Affecting tomcat-admin-webapps package, versions <0:7.0.76-12.el7_8

Severity

 Recommended
0.0
high
0
10

Based on CentOS security rating

    Threat Intelligence

    Exploit Maturity
    Proof of concept
    EPSS
    92.25% (99th percentile)

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  • Snyk ID SNYK-CENTOS7-TOMCATADMINWEBAPPS-2165678
  • published 26 Jul 2021
  • disclosed 20 May 2020
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Introduced: 20 May 2020

CVE-2020-9484 Open this link in a new tab
CWE-502 Open this link in a new tab

How to fix?

Upgrade Centos:7 tomcat-admin-webapps to version 0:7.0.76-12.el7_8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat-admin-webapps package and not the tomcat-admin-webapps package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

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.

References

CVSS Scores

version 3.1
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NVD

7 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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Red Hat

7 high
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SUSE

7.5 high