by Kastro
Paper/Archive/CVE-2021-45423

CVE-2021-45423

mitre — A Buffer Overflow vulnerabilityexists in Pev 0.81 via the pe_exports function from exports.c..

EPSS 1%public exploitCVSS 9.8
critical.is priorityof 100
53
CVSS 9.8 (ADP, NVD agree)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 66.3.663 × 2013.3Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
n/an/a–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

refgithub.com/merces/libpe/issues/35