CVE Vulnerabilities

CVE-2019-20051

Incorrect Calculation

Published: Dec 27, 2019 | Modified: Nov 07, 2023
CVSS 3.x
5.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM

A floating-point exception was discovered in PackLinuxElf::elf_hash in p_lx_elf.cpp in UPX 3.95. The vulnerability causes an application crash, which leads to denial of service.

Weakness

The product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management.

Affected Software

Name Vendor Start Version End Version
Upx Upx_project 3.95 (including) 3.95 (including)
Upx-ucl Ubuntu bionic *
Upx-ucl Ubuntu disco *
Upx-ucl Ubuntu eoan *
Upx-ucl Ubuntu trusty *
Upx-ucl Ubuntu xenial *

Potential Mitigations

  • Use languages, libraries, or frameworks that make it easier to handle numbers without unexpected consequences.
  • Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++).
  • Use languages, libraries, or frameworks that make it easier to handle numbers without unexpected consequences.
  • Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++).

References