Information disclosure and crash via unchecked section names
Published Jan 24, 2022 · Updated Apr 22, 2025
Out-of-bounds read in elfspirit before 1.1 allows local users to disclose process memory or crash the parser via a crafted ELF file. The parse function derives section-name pointers from attacker-controlled string-table offsets and uses them as strings without checking that they remain inside the mapped file. Exploitation requires the crafted file to be parsed; the demonstrated consequence is a parser crash, while the advisory also reports disclosure of mapped process memory.
Summary
What happened
Out-of-bounds read in elfspirit before 1.1 allows local users to disclose process memory or crash the parser via a crafted ELF file. The parse function derives section-name pointers from attacker-controlled string-table offsets and uses them as strings without checking that they remain inside the mapped file. Exploitation requires the crafted file to be parsed; the demonstrated consequence is a parser crash, while the advisory also reports disclosure of mapped process memory.
The record
- CVE
- CVE-2022-21711
- Published
- Jan 24, 2022
- Updated
- Apr 22, 2025
- Vendor
- liyansong2018
- Product
- elfspirit
- Classifications
- CWE-125, CAPEC-540, T1499.004
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 24, 2022CVE publishedPublication date reported by the CVE source.
- Apr 22, 2025Record 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=< 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.
Weakness, pattern, technique
Public exploit references
- Crafted ELF proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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