Client-memory disclosure via unchecked bandwidth result length
Published May 7, 2020 · Updated Aug 4, 2024
Out-of-bounds read in FreeRDP clients after 1.1 and before 2.0.0 allows remote attackers to read up to eight bytes of client memory. The autodetect_recv_bandwidth_measure_results parser reads two four-byte fields without first verifying that eight bytes remain in the response stream. A client must connect to an attacker-controlled RDP server and process its shortened Bandwidth Measure Results message, limiting the demonstrated consequence to disclosure of those bytes.
Summary
What happened
Out-of-bounds read in FreeRDP clients after 1.1 and before 2.0.0 allows remote attackers to read up to eight bytes of client memory. The autodetect_recv_bandwidth_measure_results parser reads two four-byte fields without first verifying that eight bytes remain in the response stream. A client must connect to an attacker-controlled RDP server and process its shortened Bandwidth Measure Results message, limiting the demonstrated consequence to disclosure of those bytes.
The record
- CVE
- CVE-2020-11047
- Published
- May 7, 2020
- Updated
- Aug 4, 2024
- Vendor
- FreeRDP
- Product
- FreeRDP
- Classifications
- CWE-125
- Attack vector
- network
- Privileges
- Unavailable
Timeline
How it unfolded
- May 7, 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
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=> 1.1, < 2.0.0
What conditions does exploitation require?
What is affected?
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
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo