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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --------------v9y0cuqXCKM6q1CFk9TIrexy Content-Type: multipart/mixed; boundary="------------2WwAApxkHRT60payeEp045sb"; protected-headers="v1" From: Bruce Cable <bruce.cable@canonical.com> Reply-To: Ubuntu Security <security@ubuntu.com> To: ubuntu-security-announce@lists.ubuntu.com Message-ID: <83767fbd-00bf-4b85-9894-82196ea79c91@canonical.com> Subject: [USN-7199-1] xmltok library vulnerabilities
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========================================================================== Ubuntu Security Notice USN-7199-1 January 13, 2025
libxmltok vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 24.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in libxmltok.
Software Description: - libxmltok: XML Parser Toolkit, runtime libraries
Details:
It was discovered that Expat, contained within the xmltok library, incorrectly handled malformed XML data. If a user or application were tricked into opening a crafted XML file, an attacker could cause a denial of service, or possibly execute arbitrary code. (CVE-2015-1283, CVE-2016-0718, CVE-2016-4472, CVE-2019-15903)
It was discovered that Expat, contained within the xmltok library, incorrectly handled XML data containing a large number of colons, which could lead to excessive resource consumption. If a user or application were tricked into opening a crafted XML file, an attacker could possibly use this issue to cause a denial of service. (CVE-2018-20843)
It was discovered that Expat, contained within the xmltok library, incorrectly handled certain input, which could lead to an integer overflow. If a user or application were tricked into opening a crafted XML file, an attacker could possibly use this issue to cause a denial of service. (CVE-2021-46143, CVE-2022-22822, CVE-2022-22823, CVE-2022-22824, CVE-2022-22825, CVE-2022-22826, CVE-2022-22827)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 24.10 libxmltok1t64 1.2-4.1ubuntu3.1
Ubuntu 24.04 LTS libxmltok1t64 1.2-4.1ubuntu2.24.0.4.1+esm2 Available with Ubuntu Pro
Ubuntu 22.04 LTS libxmltok1 1.2-4ubuntu0.22.04.1~esm4 Available with Ubuntu Pro
Ubuntu 20.04 LTS libxmltok1 1.2-4ubuntu0.20.04.1~esm4 Available with Ubuntu Pro
Ubuntu 18.04 LTS libxmltok1 1.2-4ubuntu0.18.04.1~esm4 Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References: https://ubuntu.com/security/notices/USN-7199-1 CVE-2015-1283, CVE-2016-0718, CVE-2016-4472, CVE-2018-20843, CVE-2019-15903, CVE-2021-46143, CVE-2022-22822, CVE-2022-22823, CVE-2022-22824, CVE-2022-22825, CVE-2022-22826, CVE-2022-22827
Package Information: https://launchpad.net/ubuntu/+source/libxmltok/1.2-4.1ubuntu3.1
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