Client filesystem write via print path traversal
Published Nov 22, 2023 · Updated Aug 2, 2024
Path traversal in TightGate-Pro Server before 2.0.406g allows remote authenticated users to write PDFs to connected client filesystems. The VNC print function accepts relative path components in spool filenames and transfers the resulting PDF outside the intended destination; Unicode characters also prevent post-transfer deletion. Access to an authenticated VNC session is required, and a SIGUSR2 signal to the VNC process triggers a malware-scanner-bypassing file transfer.
Summary
What happened
Path traversal in TightGate-Pro Server before 2.0.406g allows remote authenticated users to write PDFs to connected client filesystems. The VNC print function accepts relative path components in spool filenames and transfers the resulting PDF outside the intended destination; Unicode characters also prevent post-transfer deletion. Access to an authenticated VNC session is required, and a SIGUSR2 signal to the VNC process triggers a malware-scanner-bypassing file transfer.
The record
- CVE
- CVE-2023-47251
- Published
- Nov 22, 2023
- Updated
- Aug 2, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-22, T1105
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 22, 2023CVE publishedPublication date reported by the CVE source.
- Aug 2, 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?
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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
- SEC Consult TightGate-Pro file-transfer proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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