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Vulnerability Details :

CVE-2020-13657

Summary
Assigner-mitre
Assigner Org ID-8254265b-2729-46b6-b9e3-3dfca2d5bfca
Published At-29 Jun, 2020 | 17:51
Updated At-04 Aug, 2024 | 12:25
Rejected At-
Credits

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:mitre
Assigner Org ID:8254265b-2729-46b6-b9e3-3dfca2d5bfca
Published At:29 Jun, 2020 | 17:51
Updated At:04 Aug, 2024 | 12:25
Rejected At:
▼CVE Numbering Authority (CNA)

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 Products
Vendor
n/a
Product
n/a
Versions
Affected
  • n/a
Problem Types
TypeCWE IDDescription
textN/An/a
Type: text
CWE ID: N/A
Description: n/a
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://forum.avast.com/index.php?topic=234638.0
x_refsource_CONFIRM
https://forum.avast.com/index.php?topic=232423.0
x_refsource_CONFIRM
Hyperlink: https://forum.avast.com/index.php?topic=234638.0
Resource:
x_refsource_CONFIRM
Hyperlink: https://forum.avast.com/index.php?topic=232423.0
Resource:
x_refsource_CONFIRM
▼Authorized Data Publishers (ADP)
CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://forum.avast.com/index.php?topic=234638.0
x_refsource_CONFIRM
x_transferred
https://forum.avast.com/index.php?topic=232423.0
x_refsource_CONFIRM
x_transferred
Hyperlink: https://forum.avast.com/index.php?topic=234638.0
Resource:
x_refsource_CONFIRM
x_transferred
Hyperlink: https://forum.avast.com/index.php?topic=232423.0
Resource:
x_refsource_CONFIRM
x_transferred
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cve@mitre.org
Published At:29 Jun, 2020 | 18:15
Updated At:21 Jul, 2021 | 11:39

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.15.5MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Primary2.02.1LOW
AV:L/AC:L/Au:N/C:N/I:P/A:N
Type: Primary
Version: 3.1
Base score: 5.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Type: Primary
Version: 2.0
Base score: 2.1
Base severity: LOW
Vector:
AV:L/AC:L/Au:N/C:N/I:P/A:N
CPE Matches
avast
avast
>>avg_antivirus>>Versions before 20.4(exclusive)
cpe:2.3:a:avast:avg_antivirus:*:*:*:*:free:*:*:*
avast
avast
>>free_antivirus>>Versions before 20.4(exclusive)
cpe:2.3:a:avast:free_antivirus:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
NVD-CWE-noinfoPrimarynvd@nist.gov
CWE ID: NVD-CWE-noinfo
Type: Primary
Source: nvd@nist.gov
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://forum.avast.com/index.php?topic=232423.0cve@mitre.org
Release Notes
Vendor Advisory
https://forum.avast.com/index.php?topic=234638.0cve@mitre.org
Vendor Advisory
Hyperlink: https://forum.avast.com/index.php?topic=232423.0
Source: cve@mitre.org
Resource:
Release Notes
Vendor Advisory
Hyperlink: https://forum.avast.com/index.php?topic=234638.0
Source: cve@mitre.org
Resource:
Vendor Advisory

Change History

0
Information is not available yet

Similar CVEs

2Records found
CVE-2016-4025
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-5.5||MEDIUM
EPSS-0.06% / 18.84%
||
7 Day CHG~0.00%
Published-03 Nov, 2016 | 10:00
Updated-12 Apr, 2025 | 10:46
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Avast Internet Security v11.x.x, Pro Antivirus v11.x.x, Premier v11.x.x, Free Antivirus v11.x.x, Business Security v11.x.x, Endpoint Protection v8.x.x, Endpoint Protection Plus v8.x.x, Endpoint Protection Suite v8.x.x, Endpoint Protection Suite Plus v8.x.x, File Server Security v8.x.x, and Email Server Security v8.x.x allow attackers to bypass the DeepScreen feature via a DeviceIoControl call.

Action-Not Available
Vendor-avastn/a
Product-pro_antiviruspremieremail_server_securitybusiness_securityendpoint_protectionendpoint_protection_suiteendpoint_protection_suite_plusfree_antivirusinternet_securityendpoint_protection_plusfile_server_securityn/a
CVE-2020-25289
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-5.5||MEDIUM
EPSS-0.04% / 10.74%
||
7 Day CHG~0.00%
Published-13 Sep, 2020 | 19:35
Updated-04 Aug, 2024 | 15:33
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

The VPN service in AVAST SecureLine before 5.6.4982.470 allows local users to write to arbitrary files via an Object Manager symbolic link from the log directory (which has weak permissions).

Action-Not Available
Vendor-avastn/a
Product-secureline_vpnn/a
CWE ID-CWE-59
Improper Link Resolution Before File Access ('Link Following')
Details not found