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ubuntucveUbuntu.comUB:CVE-2021-45423
HistoryMar 13, 2023 - 12:00 a.m.

CVE-2021-45423

2023-03-1300:00:00
ubuntu.com
ubuntu.com
8
cve-2021-45423
buffer overflow
pev 0.81
code execution
stack allocation
dynamic allocation
vulnerability

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

EPSS

0.003

Percentile

68.5%

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.

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

EPSS

0.003

Percentile

68.5%