# CVE-2021-45423: pev: A Buffer Overflow vulnerabilityexists in Pev 0.81 via the pe_exports function from exports.c.

CVE-2021-45423 is fixed in pev on 1 platform by DEBIAN-CVE-2021-45423 (version 0.81-9), released March 13, 2023. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2021-45423
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0113
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 13, 2023

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | pev Debian 12.15 (bookworm) | 0.81-9 | [DEBIAN-CVE-2021-45423](https://patchblox.com/security/data/fix/linux/debian-cve-2021-45423.md) | Mar 13, 2023 |

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