Out-of-bounds read via unterminated hostname buffer
Published Aug 27, 2024 · Updated Aug 27, 2024
An out-of-bounds read in wolfSSL 5.7.0 and earlier allows remote attackers to overread memory through a non-terminated hostname buffer. MatchDomainName ignores the caller-supplied length and scans str for a NULL terminator, reading one byte beyond the supplied array. Reachability requires an application to call the OpenSSL-compatibility X509_check_host API with a non-NULL-terminated name, a use the vendor describes as uncommon.
Summary
What happened
An out-of-bounds read in wolfSSL 5.7.0 and earlier allows remote attackers to overread memory through a non-terminated hostname buffer. MatchDomainName ignores the caller-supplied length and scans str for a NULL terminator, reading one byte beyond the supplied array. Reachability requires an application to call the OpenSSL-compatibility X509_check_host API with a non-NULL-terminated name, a use the vendor describes as uncommon.
The record
- CVE
- CVE-2024-5991
- Published
- Aug 27, 2024
- Updated
- Aug 27, 2024
- Vendor
- wolfSSL
- Product
- wolfSSL
- Classifications
- CWE-125, CAPEC-100, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 27, 2024CVE publishedPublication date reported by the CVE source.
- Aug 27, 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 <=5.7.0
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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