Code execution via dangling RDP audio pointers
Published Jun 7, 2023 · Updated Oct 10, 2024
Use-after-free in Apache Guacamole 0.9.10 through 1.5.1 allows remote authenticated users to execute code in the guacd process. After user teardown, audio_buffer_ack follows the audio buffer's dangling user and socket pointers when the RDP host closes audio input, invoking a freed socket lock handler. Exploitation requires an RDP connection with audio input and connection sharing plus favorable heap and timing conditions; successful control runs with guacd privileges.
Summary
What happened
Use-after-free in Apache Guacamole 0.9.10 through 1.5.1 allows remote authenticated users to execute code in the guacd process. After user teardown, audio_buffer_ack follows the audio buffer's dangling user and socket pointers when the RDP host closes audio input, invoking a freed socket lock handler. Exploitation requires an RDP connection with audio input and connection sharing plus favorable heap and timing conditions; successful control runs with guacd privileges.
The record
- CVE
- CVE-2023-30576
- Published
- Jun 7, 2023
- Updated
- Oct 10, 2024
- Vendor
- The Apache Software Foundation
- Product
- Apache Guacamole
- Classifications
- CWE-416, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 7, 2023CVE publishedPublication date reported by the CVE source.
- Oct 10, 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=0.9.10 <=1.5.1
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.
Public exploit references
- SonarSource RDP audio use-after-free demonstrationfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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