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Ubuntu Security Notice USN-7001-1

Ubuntu Security Notice 7001-1 - Shang-Hung Wan discovered that Expat, contained within the xmltok library, did not properly handle certain function calls when a negative input length was provided. An attacker could use this issue to cause a denial of service or possibly execute arbitrary code. Shang-Hung Wan discovered that Expat, contained within the xmltok library, did properly handle the potential for an integer overflow on 32-bit platforms. An attacker could use this issue to cause a denial of service or possibly execute arbitrary code.

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==========================================================================Ubuntu Security Notice USN-7001-1September 12, 2024libxmltok vulnerabilities==========================================================================A security issue affects these releases of Ubuntu and its derivatives:- Ubuntu 22.04 LTS- Ubuntu 20.04 LTS- Ubuntu 18.04 LTS- Ubuntu 16.04 LTSSummary:Several security issues were fixed in libxmltok.Software Description:- libxmltok: XML Parser Toolkit, runtime librariesDetails:Shang-Hung Wan discovered that Expat, contained within the xmltok library,did not properly handle certain function calls when a negative input lengthwas provided. An attacker could use this issue to cause a denial of serviceor possibly execute arbitrary code. (CVE-2024-45490)Shang-Hung Wan discovered that Expat, contained within the xmltok library,did properly handle the potential for an integer overflow on 32-bitplatforms. An attacker could use this issue to cause a denial of service orpossibly execute arbitrary code. (CVE-2024-45491)Update instructions:The problem can be corrected by updating your system to the followingpackage versions:Ubuntu 22.04 LTS   libxmltok1                      1.2-4ubuntu0.22.04.1~esm3                                   Available with Ubuntu ProUbuntu 20.04 LTS   libxmltok1                      1.2-4ubuntu0.20.04.1~esm3                                   Available with Ubuntu ProUbuntu 18.04 LTS   libxmltok1                      1.2-4ubuntu0.18.04.1~esm3                                   Available with Ubuntu ProUbuntu 16.04 LTS   libxmltok1                      1.2-3ubuntu0.16.04.1~esm4                                   Available with Ubuntu ProIn general, a standard system update will make all the necessary changes.References:   https://ubuntu.com/security/notices/USN-7001-1   CVE-2024-45490, CVE-2024-45491

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Ubuntu Security Notice 7000-1 - Shang-Hung Wan discovered that Expat did not properly handle certain function calls when a negative input length was provided. An attacker could use this issue to cause a denial of service or possibly execute arbitrary code. Shang-Hung Wan discovered that Expat did properly handle the potential for an integer overflow on 32-bit platforms. An attacker could use this issue to cause a denial of service or possibly execute arbitrary code.

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