Memory disclosure and crash via malformed symbol
Published Nov 17, 2023 · Updated Aug 29, 2024
Out-of-bounds read in Liblisp through commit 4c65969 allows attackers to disclose memory or crash the interpreter via a malformed symbol. In eval.c, get_length treats a SYMBOL cell as if it has a second pointer slot and returns x->p[1].v without validating that the slot exists. Exploitation requires a consuming application or user to pass attacker-controlled Lisp input to the interpreter; the demonstrated result is an out-of-bounds read and process abort under AddressSanitizer.
Summary
What happened
Out-of-bounds read in Liblisp through commit 4c65969 allows attackers to disclose memory or crash the interpreter via a malformed symbol. In eval.c, get_length treats a SYMBOL cell as if it has a second pointer slot and returns x->p[1].v without validating that the slot exists. Exploitation requires a consuming application or user to pass attacker-controlled Lisp input to the interpreter; the demonstrated result is an out-of-bounds read and process abort under AddressSanitizer.
The record
- CVE
- CVE-2023-48025
- Published
- Nov 17, 2023
- Updated
- Aug 29, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-125, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 17, 2023CVE publishedPublication date reported by the CVE source.
- Aug 29, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
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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
- Liblisp out-of-bounds-read reproduction inputproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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