SYSTEM-level file writes via firmware ZIP traversal
Published May 14, 2020 · Updated Aug 4, 2024
Path traversal in Opto 22 SoftPAC 9.6 and earlier allows remote authenticated users to write arbitrary files with SYSTEM privileges. SoftPAC Agent extracts firmware ZIP entries without sanitizing embedded paths, so traversal sequences place attacker-controlled files outside the intended directory. User-level access to the firmware-update path is required; a successful write can overwrite files available to the SYSTEM service and support code execution when combined with a loading primitive.
Summary
What happened
Path traversal in Opto 22 SoftPAC 9.6 and earlier allows remote authenticated users to write arbitrary files with SYSTEM privileges. SoftPAC Agent extracts firmware ZIP entries without sanitizing embedded paths, so traversal sequences place attacker-controlled files outside the intended directory. User-level access to the firmware-update path is required; a successful write can overwrite files available to the SYSTEM service and support code execution when combined with a loading primitive.
The record
- CVE
- CVE-2020-12042
- Published
- May 14, 2020
- Updated
- Aug 4, 2024
- Vendor
- Opto 22
- Product
- SoftPAC
- Classifications
- CWE-347, T0866
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 14, 2020CVE publishedPublication date reported by the CVE source.
- Aug 4, 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=SoftPAC Project Version 9.6 and prior
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
- SoftPAC chained laboratory proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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