Application crash via unchecked PYC size multiplication
Published Jul 27, 2022 · Updated Aug 3, 2024
Integer overflow in Rizin 0.4.0 and earlier allows context-dependent attackers to crash the application through a crafted PYC binary. The get_long_object function multiplies an attacker-controlled long-object size by 15 using signed integer arithmetic without rejecting overflow; subsequent parsing writes beyond the resulting heap allocation. A local user must open the crafted binary, and the demonstrated consequence is a process abort with no reported data disclosure or modification.
Summary
What happened
Integer overflow in Rizin 0.4.0 and earlier allows context-dependent attackers to crash the application through a crafted PYC binary. The get_long_object function multiplies an attacker-controlled long-object size by 15 using signed integer arithmetic without rejecting overflow; subsequent parsing writes beyond the resulting heap allocation. A local user must open the crafted binary, and the demonstrated consequence is a process abort with no reported data disclosure or modification.
The record
- CVE
- CVE-2022-34612
- Published
- Jul 27, 2022
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-190, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 27, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 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?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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
- Malformed PYC binary crash reproducerproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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