#VU63785 Out-of-bounds read in radare2 - CVE-2022-1899

Vulnerability identifier: #VU63785

Vulnerability risk: Medium

CVSSv4.0: 7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2022-1899

CWE-ID: CWE-125

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 compromise the target system.

The vulnerability exists due to a boundary condition in string_scan_range. A remote attacker can trigger out-of-bounds read error and read contents of memory on the system or perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

radare2: 5.6.0 - 5.6.9

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External links
https://huntr.dev/bounties/8a3dc5cb-08b3-4807-82b2-77f08c137a04
https://github.com/radareorg/radare2/commit/193f4fe01d7f626e2ea937450f2e0c4604420e9d

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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. However, proof of concept for this vulnerability is available.