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Alpine Linux: CVE-2021-45423: Classic Buffer Overflow

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Alpine Linux: CVE-2021-45423: Classic Buffer Overflow

Severity
10
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
Published
03/13/2023
Created
08/23/2024
Added
08/22/2024
Modified
10/02/2024

Description

A Buffer Overflow vulnerabilityexists in Pev 0.81 via the pe_exports function from exports.c.. The array offsets_to_Names is dynamically allocated on the stack using exp->NumberOfFunctions as its size. However, the loop uses exp->NumberOfNames to iterate over it and set its components value. Therefore, the loop code assumes that exp->NumberOfFunctions is greater than ordinal at each iteration. This can lead to arbitrary code execution.

Solution(s)

  • alpine-linux-upgrade-pev

References

  • https://attackerkb.com/topics/cve-2021-45423
  • CVE - 2021-45423
  • https://security.alpinelinux.org/vuln/CVE-2021-45423
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