Mageia 2020-0277: tomcat security update

    Date 05 Jul 2020
    204
    Posted By LinuxSecurity Advisories
    Updated tomcat packages fix security vulnerability: When using Apache Tomcat versions 9.0.0.M1 to 9.0.34, 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
    MGASA-2020-0277 - Updated tomcat packages fix security vulnerability
    
    Publication date: 05 Jul 2020
    URL: https://advisories.mageia.org/MGASA-2020-0277.html
    Type: security
    Affected Mageia releases: 7
    CVE: CVE-2020-9484
    
    Updated tomcat packages fix security vulnerability:
    
    When using Apache Tomcat versions 9.0.0.M1 to 9.0.34, 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 (CVE-2020-9484).
    
    References:
    - https://bugs.mageia.org/show_bug.cgi?id=26657
    - https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.35
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-9484
    
    SRPMS:
    - 7/core/tomcat-9.0.35-1.mga7
    

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