Vulnerability Details : 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 2021-03-26 17:15:13
Updated 2022-08-05 17:44:39
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: OverflowMemory CorruptionDenial of service

Exploit prediction scoring system (EPSS) score for CVE-2021-20285

EPSS FAQ
0.07%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 30 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-20285

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
8.3
 HIGH AV:N/AC:M/Au:N/C:P/I:P/A:C
8.6
8.5
 NIST
6.6
 MEDIUM CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
1.8
4.7
 NIST

CWE ids for CVE-2021-20285

  • The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
    Assigned by: secalert@redhat.com (Secondary)
  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-20285

Products affected by CVE-2021-20285

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