Parser panic via empty phone-context indexing
Published Sep 19, 2023 · Updated Sep 24, 2024
Out-of-bounds access in affected Whisperfish phonenumber releases allows remote attackers to trigger a panic via crafted RFC3966 input. In src/parser/rfc3966.rs, phone_number reads byte zero of an empty phone-context value before checking for a leading plus sign, so .;phone-context= triggers the panic. Reachability requires a consuming application to pass attacker-controlled phone-number text to the library; an uncaught panic can terminate its process without exposing or modifying data.
Summary
What happened
Out-of-bounds access in affected Whisperfish phonenumber releases allows remote attackers to trigger a panic via crafted RFC3966 input. In src/parser/rfc3966.rs, phone_number reads byte zero of an empty phone-context value before checking for a leading plus sign, so .;phone-context= triggers the panic. Reachability requires a consuming application to pass attacker-controlled phone-number text to the library; an uncaught panic can terminate its process without exposing or modifying data.
The record
- CVE
- CVE-2023-42444
- Published
- Sep 19, 2023
- Updated
- Sep 24, 2024
- Vendor
- Whisperfish
- Product
- phonenumber
- Classifications
- CWE-392, CWE-248, CWE-1284, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 19, 2023CVE publishedPublication date reported by the CVE source.
- Sep 24, 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=< 0.2.5+8.11.3
- Affected versionversion=>= 0.3.0, < 0.3.3+8.3.19
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
- Empty phone-context RFC3966 crash inputproof of concept · demonstrated
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Technologies
Your stack
See the directory against your own environment.
Your stack
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