#VU39625 NULL pointer dereference in radare2 - CVE-2017-6197

Vulnerability identifier: #VU39625

Vulnerability risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-6197

CWE-ID: CWE-476

Exploitation vector: Local

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. A remote attacker can trigger denial of service conditions via a crafted binary file, as demonstrated by the r_read_le32 function.

Mitigation
Install update from vendor's website.

Vulnerable software versions

radare2: 1.2.1

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External links
https://www.securityfocus.com/bid/96433
https://github.com/radare/radare2/commit/1ea23bd6040441a21fbcfba69dce9a01af03f989
https://github.com/radare/radare2/issues/6816

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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