OS Command Injection in Radare radare2

1) OS Command Injection

EUVDB-ID: #VU35483

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-16718

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

In radare2 before 3.9.0, a command injection vulnerability exists in bin_symbols() in libr/core/cbin.c. By using a crafted executable file, it's possible to execute arbitrary shell commands with the permissions of the victim. This vulnerability is due to an insufficient fix for CVE-2019-14745 and improper handling of symbol names embedded in executables.

Mitigation

Install update from vendor's website.

Vulnerable software versions

radare2: 3.0.0 - 3.8.0

CPE2.3

• cpe:2.3:a:radare:radare2:3.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:radare:radare2:3.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:radare:radare2:3.1.0:*:*:*:*:*:*:*

External links

https://github.com/radareorg/radare2/commit/5411543a310a470b1257fb93273cdd6e8dfcb3af
https://github.com/radareorg/radare2/commit/dd739f5a45b3af3d1f65f00fe19af1dbfec7aea7
https://github.com/radareorg/radare2/compare/3.8.0...3.9.0

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.