Time-of-check Time-of-use (TOCTOU) Affecting tomcat-servlet-4_0-api package, versions <9.0.36-3.90.1


medium

Snyk CVSS

    Attack Complexity High
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.04% (9th percentile)
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NVD
7 high
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SUSE
7 high
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Red Hat
7 high

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  • Snyk ID SNYK-SLES150-TOMCATSERVLET40API-2641545
  • published 14 Apr 2022
  • disclosed 3 Mar 2022

How to fix?

Upgrade SLES:15.0 tomcat-servlet-4_0-api to version 9.0.36-3.90.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat-servlet-4_0-api package and not the tomcat-servlet-4_0-api package as distributed by SLES. See How to fix? for SLES:15.0 relevant fixed versions and status.

The fix for bug CVE-2020-9484 introduced a time of check, time of use vulnerability into Apache Tomcat 10.1.0-M1 to 10.1.0-M8, 10.0.0-M5 to 10.0.14, 9.0.35 to 9.0.56 and 8.5.55 to 8.5.73 that allowed a local attacker to perform actions with the privileges of the user that the Tomcat process is using. This issue is only exploitable when Tomcat is configured to persist sessions using the FileStore.