drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in Tomcat
Name: |
Mehrere Probleme in Tomcat |
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ID: |
USN-4596-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 20.04 LTS |
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Datum: |
Mi, 21. Oktober 2020, 22:56 |
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Referenzen: |
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13934
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13935
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11996
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-9484 |
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Applikationen: |
Apache Tomcat |
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Originalnachricht |
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --===============3929735188944723581== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="KFjktjI8OB1hpVGJa8FIxhOLrzisxwsgb"
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --KFjktjI8OB1hpVGJa8FIxhOLrzisxwsgb Content-Type: multipart/mixed; boundary="jXNoAySdlsk3zZEO4P7QIPfq1mxicbLz5"
--jXNoAySdlsk3zZEO4P7QIPfq1mxicbLz5 Content-Type: text/plain; charset=utf-8 Content-Language: en-U Content-Transfer-Encoding: quoted-printable
========================================================================== Ubuntu Security Notice USN-4596-1 October 21, 2020
tomcat9 vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
Summary:
Several security issues were fixed in Tomcat.
Software Description: - tomcat9: Apache Tomcat 9 - Servlet and JSP engine
Details:
It was discovered that Tomcat did not properly manage HTTP/2 streams. An attacker could possibly use this to cause Tomcat to consume resources, resulting in a denial of service. (CVE-2020-11996)
It was discovered that Tomcat did not properly release the HTTP/1.1 processor after the upgrade to HTTP/2. An attacker could possibly use this to generate an OutOfMemoryException, resulting in a denial of service. (CVE-2020-13934)
It was discovered that Tomcat did not properly validate the payload length in a WebSocket frame. An attacker could possibly use this to trigger an infinite loop, resulting in a denial of service. (CVE-2020-13935)
It was discovered that Tomcat did not properly deserialize untrusted data. An attacker could possibly use this issue to execute arbitrary code. (CVE-2020-9484)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.04 LTS: libtomcat9-embed-java 9.0.31-1ubuntu0.1 libtomcat9-java 9.0.31-1ubuntu0.1 tomcat9 9.0.31-1ubuntu0.1 tomcat9-common 9.0.31-1ubuntu0.1
In general, a standard system update will make all the necessary changes.
References: https://usn.ubuntu.com/4596-1 CVE-2020-11996, CVE-2020-13934, CVE-2020-13935, CVE-2020-9484
Package Information: https://launchpad.net/ubuntu/+source/tomcat9/9.0.31-1ubuntu0.1
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