#VU79764 NULL pointer dereference in radare2 - CVE-2022-34520

Vulnerability identifier: #VU79764

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-34520

CWE-ID: CWE-476

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 perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in libr/bin/p/bin_xtr_xalz.c. A remote attacker can trigger denial of service conditions via a crafted binary file.

Mitigation
Install update from vendor's website.

Vulnerable software versions

radare2: 5.0.0 - 5.7.2

---

External links
https://github.com/radareorg/radare2/issues/20354
https://github.com/radareorg/radare2/commit/fc285cecb8469f0262db0170bf6dd7c01d9b8ed5

---

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.