Local file disclosure via unsanitized DTD entities
Published Feb 11, 2021 · Updated Aug 3, 2024
XML external entity injection in Pelco Digital Sentry Server 7.18.72.11464 allows local users to read arbitrary files. DSControlPoint.exe parses an attacker-created ControlPointCacheShare.xml from the writable %APPDATA%\Pelco directory without blocking parameter entities, so a crafted DTD reads a local file and sends its contents to an attacker-controlled HTTP server. Exploitation requires access to create the cache file in a user profile and induce DSControlPoint.exe to parse it; the demonstrated consequence is out-of-band disclosure of local file contents.
Summary
What happened
XML external entity injection in Pelco Digital Sentry Server 7.18.72.11464 allows local users to read arbitrary files. DSControlPoint.exe parses an attacker-created ControlPointCacheShare.xml from the writable %APPDATA%\Pelco directory without blocking parameter entities, so a crafted DTD reads a local file and sends its contents to an attacker-controlled HTTP server. Exploitation requires access to create the cache file in a user profile and induce DSControlPoint.exe to parse it; the demonstrated consequence is out-of-band disclosure of local file contents.
The record
- CVE
- CVE-2021-27184
- Published
- Feb 11, 2021
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-611, T1005
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 11, 2021CVE 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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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
- Pelco Digital Sentry Server XXE proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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