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Ubuntu Security Notice USN-6402-2
November 27, 2023
libtommath vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.10
Summary:
LibTomMatch could be made to execute arbitrary code or
denial of service if it received a specially crafted input.
Software Description:
- libtommath: multiple-precision integer library [development files]
Details:
USN-6402-1 fixed vulnerabilities in LibTomMath. This update
provides the corresponding updates for Ubuntu 23.10.
Original advisory details:
 It was discovered that LibTomMath incorrectly handled certain inputs.
 An attacker could possibly use this issue to execute arbitrary code
 and cause a denial of service (DoS).
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.10:
  libtommath1                     1.2.0-6ubuntu0.23.10.1
In general, a standard system update will make all the necessary changes.
References:
  https://ubuntu.com/security/notices/USN-6402-2
  https://ubuntu.com/security/notices/USN-6402-1
  CVE-2023-36328
Package Information:
  https://launchpad.net/ubuntu/+source/libtommath/1.2.0-6ubuntu0.23.10.1