Arbitrary file disclosure via unchecked download path
Published Nov 12, 2021 · Updated Aug 4, 2024
Path traversal in ServerManagement allows remote authenticated users to read arbitrary server files through the /DownFile route. At commit 49491cc6f94980e6be7791d17be947c27071eb56, DownFile decodes the attacker-controlled filename and passes its directory and basename to send_from_directory without restricting the requested path. The route is guarded by cklogin, and reads are bounded by the service account's permissions; exposed credentials supply a path to later code execution.
Summary
What happened
Path traversal in ServerManagement allows remote authenticated users to read arbitrary server files through the /DownFile route. At commit 49491cc6f94980e6be7791d17be947c27071eb56, DownFile decodes the attacker-controlled filename and passes its directory and basename to send_from_directory without restricting the requested path. The route is guarded by cklogin, and reads are bounded by the service account's permissions; exposed credentials supply a path to later code execution.
The record
- CVE
- CVE-2021-43493
- Published
- Nov 12, 2021
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-22, T1005
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 12, 2021CVE 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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What is affected?
Affected products and versions are unavailable in this record.
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
- DownFile curl proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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