Integer overflow in radare2

1) Integer overflow

EUVDB-ID: #VU23422

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-19590

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to integer overflow for the variable "new_token_size" in the "r_asm_massemble" function in "libr/asm/asm.c". A remote attacker can trigger integer overflow, which will result in a Use-After-Free for the buffer tokens and cause a denial of service (DoS) condition or possibly execute arbitrary code via crafted input.

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

radare2: 1.0.0 - 4.0.0

CPE2.3

• cpe:2.3:a:radare:radare2:1.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:radare:radare2:1.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:radare:radare2:1.0.2:*:*:*:*:*:*:*

External links

https://github.com/radareorg/radare2/issues/15543

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.