CVE-2021-45423

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.

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

1.13% chance of exploitation in the next 30 days, 64th percentile

Published

2023-03-13

Updated

2025-03-03

Proof-of-concept exploits (1)

• merces/libpe/issues/35

References

• CVE Record
• NVD entry

Related

• CVE-2021-45422
• CVE-2021-45425
• CVE-2021-45420
• CVE-2021-45427
• CVE-2021-45418
• CVE-2021-45428