Arbitrary file deletion via traversed filename
Published Feb 18, 2022 · Updated Aug 3, 2024
Path traversal in BigFileAgent 1.0.1.7 and earlier allows remote attackers to delete arbitrary Windows files through a malicious webpage. DeleteFileSys accepts ../ sequences in the FileName parameter and resolves them outside the developer-intended directory before deleting the target. The victim must visit an attacker-controlled page containing the crafted call, which can delete files accessible to BigFileAgent.
Summary
What happened
Path traversal in BigFileAgent 1.0.1.7 and earlier allows remote attackers to delete arbitrary Windows files through a malicious webpage. DeleteFileSys accepts ../ sequences in the FileName parameter and resolves them outside the developer-intended directory before deleting the target. The victim must visit an attacker-controlled page containing the crafted call, which can delete files accessible to BigFileAgent.
The record
- CVE
- CVE-2021-26619
- Published
- Feb 18, 2022
- Updated
- Aug 3, 2024
- Vendor
- Bluetree Co., Ltd
- Product
- BigFileAgent
- Classifications
- CWE-22, T1189
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 18, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <=1.0.1.7
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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