Process crash via unchecked allocation-size overflow
Published Oct 30, 2024 · Updated Oct 31, 2024
Out-of-bounds write in radare2 5.8.0 through 5.9.4 allows local users to crash the process through the __bf_div function. The __bf_div routine computes an allocation size from attacker-controlled limb lengths without rejecting unsigned overflow, then memset writes beyond the undersized taba buffer. The attacker must invoke a local operation that reaches the bundled QuickJS arithmetic code; the bounded result is a radare2 process crash.
Summary
What happened
Out-of-bounds write in radare2 5.8.0 through 5.9.4 allows local users to crash the process through the __bf_div function. The __bf_div routine computes an allocation size from attacker-controlled limb lengths without rejecting unsigned overflow, then memset writes beyond the undersized taba buffer. The attacker must invoke a local operation that reaches the bundled QuickJS arithmetic code; the bounded result is a radare2 process crash.
The record
- CVE
- CVE-2024-48241
- Published
- Oct 30, 2024
- Updated
- Oct 31, 2024
- Vendor
- radareorg
- Product
- radare2
- Classifications
- CWE-787
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 30, 2024CVE publishedPublication date reported by the CVE source.
- Oct 31, 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=5.8.0 <=5.9.4
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
- CVE-2024-48241 __bf_div trigger analysisproof of concept · unverified
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Technologies
Your stack
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Your stack
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