Vulnerability Monitor

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CVE-2021-20285

A flaw was found in upx canPack in p_lx_elf.cpp in UPX 3.96. This flaw allows attackers to cause a denial of service (SEGV or buffer overflow and application crash) or possibly have unspecified other impacts via a crafted ELF. The highest threat from this vulnerability is to system availability.

Published

2021-03-26T17:15:13.140

Last Modified

2025-04-11T12:27:55.013

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.6 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:C

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: COMPLETE
Exploitability Score

8.6

Impact Score

8.5

Weaknesses
  • Type: Secondary
    CWE-119
  • Type: Primary
    CWE-787
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application upx upx 3.96 Yes
References