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Ubuntu 22.04 LTS USN-7001-1 Critical: libxmltok Denial of Service

ubuntu
Calendar Grey September 12, 2024
Scroller Ubuntu
Vulnerabilities in libxmltok have been patched for Ubuntu versions 16.04 through 22.04, mitigating risks related to Denial of Service (DoS) and potential arbitrary code execution.
Several security issues were fixed in libxmltok.

Summary

Several security issues were fixed in libxmltok.

Software Description:

- libxmltok: XML Parser Toolkit, runtime libraries

Details:

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. (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-bit

platforms. An attacker could use this issue to cause a denial of service or

possibly execute arbitrary code. (CVE-2024-45491)

Topics%20covered

Topics Covered

security advisory software update DoS Ubuntu libxmltok

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS
   libxmltok1                      1.2-4ubuntu0.22.04.1~esm3
                                   Available with Ubuntu Pro

Ubuntu 20.04 LTS
   libxmltok1                      1.2-4ubuntu0.20.04.1~esm3
                                   Available with Ubuntu Pro

Ubuntu 18.04 LTS
   libxmltok1                      1.2-4ubuntu0.18.04.1~esm3
                                   Available with Ubuntu Pro

Ubuntu 16.04 LTS
   libxmltok1                      1.2-3ubuntu0.16.04.1~esm4
                                   Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References

  https://ubuntu.com/security/notices/USN-7001-1

  CVE-2024-45490, CVE-2024-45491

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7001-1

Topics%20covered

Topics Covered

security advisory software update DoS Ubuntu libxmltok

Package Information

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