Memory disclosure via stale POST body length
Published Feb 19, 2020 · Updated Aug 4, 2024
Heap out-of-bounds read in coturn 4.5.1.1's administrative web server allows remote attackers to disclose memory via HTTPS POST data. The post_parse function skips leading CR or LF bytes by advancing the data pointer but leaves data_len unchanged, so memcpy reads beyond the request buffer. No authentication is required; a crafted body and Content-Length can expose adjacent request memory or cause other process misbehavior.
Summary
What happened
Heap out-of-bounds read in coturn 4.5.1.1's administrative web server allows remote attackers to disclose memory via HTTPS POST data. The post_parse function skips leading CR or LF bytes by advancing the data pointer but leaves data_len unchanged, so memcpy reads beyond the request buffer. No authentication is required; a crafted body and Content-Length can expose adjacent request memory or cause other process misbehavior.
The record
- CVE
- CVE-2020-6061
- Published
- Feb 19, 2020
- Updated
- Aug 4, 2024
- Vendor
- coturn
- Product
- coturn
- Classifications
- CWE-125, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 19, 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
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=CoTURN 4.5.1.1
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
- Cisco Talos crafted HTTPS POST proof of conceptproof of concept · 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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