NULL pointer dereference in radare2 - CVE-2022-4843

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Main Vulnerability Database Vulnerabilities #VU79752

NULL pointer dereference in radare2 - CVE-2022-4843

Published: August 21, 2023


Vulnerability identifier: #VU79752
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-4843
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the r_io_bank_read_at() function in io_bank.c. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.


Affected software

radare2
Fedora
radare2
iaito

How to mitigate CVE-2022-4843

Install updates from vendor's website.

radare2 - update to 5.8.2
radare2 - addressed in versions 5.8.6-1.el7, 5.8.6-1.el8, 5.8.6-1.el9, 5.8.6-1.fc37, 5.8.6-1.fc38
iaito - addressed in versions 5.8.6-1.fc37, 5.8.6-1.fc38

External References

Related Security Bulletins