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MitreCVE-2020-13657

HistoryJun 29, 2020 - 6:15 p.m.

CVE-2020-13657

2020-06-2918:15:11

mitre

web.nvd.nist.gov

cve-2020-13657

avast free antivirus

avg antivirus free

elevation of privilege

vulnerability

nvd

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:L/AC:L/Au:N/C:N/I:P/A:N

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

5.6

Confidence

High

EPSS

Percentile

5.1%

JSON

An elevation of privilege vulnerability exists in Avast Free Antivirus and AVG AntiVirus Free before 20.4 due to improperly handling hard links. The vulnerability allows local users to take control of arbitrary files.

Affected configurations

Nvd

Node

avastavg_antivirusRange<20.4free

avastfree_antivirusRange<20.4

VendorProductVersionCPE
avastavg_antivirus*cpe:2.3:a:avast:avg_antivirus:*:*:*:*:free:*:*:*
avastfree_antivirus*cpe:2.3:a:avast:free_antivirus:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
avast	avg_antivirus	*	cpe:2.3:a:avast:avg_antivirus:::::free:::*
avast	free_antivirus	*	cpe:2.3:a:avast:free_antivirus::::::::

References

forum.avast.com/index.php?topic=232423.0

forum.avast.com/index.php?topic=234638.0

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:L/AC:L/Au:N/C:N/I:P/A:N

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

5.6

Confidence

High

EPSS

Percentile

5.1%

JSON

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