CVE-2021-45423

2023-03-1318:15:12

Alpine Linux Development Team

security.alpinelinux.org

buffer overflow

pev 0.81

arbitrary code execution

unix

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

9.9

Confidence

High

EPSS

0.003

Percentile

68.5%

JSON

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.

OSVersionArchitecturePackageVersionFilename
Alpineedge-communitynoarchpev< 0.82-r0UNKNOWN
Alpine3.18-communitynoarchpev< 0.82-r0UNKNOWN
Alpine3.19-communitynoarchpev< 0.82-r0UNKNOWN
Alpine3.20-communitynoarchpev< 0.82-r0UNKNOWN

OS	Version	Architecture	Package	Version	Filename
Alpine	edge-community	noarch	pev	< 0.82-r0	UNKNOWN
Alpine	3.18-community	noarch	pev	< 0.82-r0	UNKNOWN
Alpine	3.19-community	noarch	pev	< 0.82-r0	UNKNOWN
Alpine	3.20-community	noarch	pev	< 0.82-r0	UNKNOWN