• [SECURITY] [DSA 5265-1] tomcat9 security update

    From Markus Koschany@21:1/5 to All on Sun Oct 30 00:30:01 2022
    Hash: SHA512

    - ------------------------------------------------------------------------- Debian Security Advisory DSA-5265-1 security@debian.org https://www.debian.org/security/ Markus Koschany October 29, 2022 https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package : tomcat9
    CVE ID : CVE-2021-43980 CVE-2022-23181 CVE-2022-29885

    Several security vulnerabilities have been discovered in the Tomcat
    servlet and JSP engine.


    The simplified implementation of blocking reads and writes introduced in
    Tomcat 10 and back-ported to Tomcat 9.0.47 onwards exposed a long standing
    (but extremely hard to trigger) concurrency bug that could cause client
    connections to share an Http11Processor instance resulting in responses, or
    part responses, to be received by the wrong client.


    The fix for bug CVE-2020-9484 introduced a time of check, time of use
    vulnerability into Apache Tomcat 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.


    The documentation of Apache Tomcat for the EncryptInterceptor incorrectly
    stated it enabled Tomcat clustering to run over an untrusted network. This
    was not correct. While the EncryptInterceptor does provide confidentiality
    and integrity protection, it does not protect against all risks associated
    with running over any untrusted network, particularly DoS risks.

    For the stable distribution (bullseye), these problems have been fixed in version 9.0.43-2~deb11u4.

    We recommend that you upgrade your tomcat9 packages.

    For the detailed security status of tomcat9 please refer to
    its security tracker page at: https://security-tracker.debian.org/tracker/tomcat9

    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

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