#VU82986 Heap-based buffer overflow in radare2 - CVE-2023-5686

Vulnerability identifier: #VU82986

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-5686

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
radare2
Universal components / Libraries / Software for developers

Vendor: Radare

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the java_print_opcode() function in radare2/shlr/java/code.c. A remote attacker can trick the victim to open a specially crafted file, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

radare2: 5.0.0 - 5.8.8

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External links
https://huntr.com/bounties/bbfe1f76-8fa1-4a8c-909d-65b16e970be0
https://github.com/radareorg/radare2/commit/1bdda93e348c160c84e30da3637acef26d0348de

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.