Avira Internet Security Arbitrary File Deletion via Improper Link Resolution

Avira Internet Security contains an improper link resolution vulnerability in the Software Updater component. During the update process, a privileged service running as SYSTEM deletes a file under C:\\ProgramData without validating whether the path resolves through a symbolic link or reparse point. A local attacker can create a malicious link to redirect the delete operation to an arbitrary file, resulting in deletion of attacker-chosen files with SYSTEM privileges. This may lead to local privilege escalation, denial of service, or system integrity compromise depending on the targeted file and operating system configuration.

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

在文件访问前对链接解析不恰当(链接跟随)

Avira Internet Security 安全漏洞

Avira Internet Security是德国Avira公司的一款网络安全防护软件。 Avira Internet Security存在安全漏洞，该漏洞源于Software Updater组件存在链接解析不当问题，可能导致本地攻击者删除任意文件，进而引发本地权限提升、拒绝服务或系统完整性破坏。

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