Arbitrary file read via unrestricted API path
Published Feb 3, 2020 · Updated Sep 16, 2024
Arbitrary file read in CHANGING ServiSign 1.0.19.0617 and earlier allows remote attackers to read local files through a crafted webpage. A called DLL API accepts an attacker-chosen path without path filtering or access control, then returns the selected file's contents to webpage code. Exploitation requires a user with ServiSign installed to browse a malicious or compromised page; the exposed file can then be uploaded to the attacker.
Summary
What happened
Arbitrary file read in CHANGING ServiSign 1.0.19.0617 and earlier allows remote attackers to read local files through a crafted webpage. A called DLL API accepts an attacker-chosen path without path filtering or access control, then returns the selected file's contents to webpage code. Exploitation requires a user with ServiSign installed to browse a malicious or compromised page; the exposed file can then be uploaded to the attacker.
The record
- CVE
- CVE-2020-3926
- Published
- Feb 3, 2020
- Updated
- Sep 16, 2024
- Vendor
- CHANGING Information Technology Inc.
- Product
- ServiSign
- Classifications
- CWE-552, T1204
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 3, 2020CVE publishedPublication date reported by the CVE source.
- Sep 16, 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=0 <=1.0.19.0617
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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