A heap-based buffer overflow issue was discovered in UPX in PackTmt::pack() in p_tmt.cpp file. The flow allows an attacker to cause a denial of service (abort) via a crafted file.
Published 2023-01-12 19:15:25
Updated 2024-12-12 01:15:48
View at NVD,   CVE.org
Vulnerability category: OverflowDenial of service

Products affected by CVE-2023-23456

Exploit prediction scoring system (EPSS) score for CVE-2023-23456

0.13%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 48 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-23456

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.5
MEDIUM CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
1.8
3.6
NIST
5.3
MEDIUM CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
1.8
3.4
Fedora Project 2024-04-19

CWE ids for CVE-2023-23456

  • A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
    Assigned by: patrick@puiterwijk.org (Secondary)
  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by:
    • nvd@nist.gov (Primary)
    • patrick@puiterwijk.org (Secondary)

References for CVE-2023-23456

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