Improper Access Control in Avira Free Security Suite Vulnerability
CVE-2019-11396

7.8HIGH

Key Information:

Vendor

Avira

Status
Free Security Suite
Software Updater
Vendor
CVE Published:
29 August 2019

What is CVE-2019-11396?

An issue exists in Avira Free Security Suite 10 where inappropriate access rights are set on the SoftwareUpdater folder, allowing unprivileged users to manipulate files connected to privileged operations. By exploiting the creation of the SwuConfig.json file, an unauthenticated user can substitute legitimate files with symbolic links to arbitrary files. This results in elevated privilege scenarios during updates, where a privileged service inadvertently grants excessive write permissions, thereby exposing sensitive system areas to unauthorized file modifications.

References

http://packetstormsecurity.com/files/153868/Avira-Free-Se...
x_refsource_MISC
https://seclists.org/fulldisclosure/2019/Aug/1
mailing-listx_refsource_FULLDISC
https://medium.com/sidechannel-br/vulnerabilidade-no-avir...
x_refsource_MISC

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.