#VU49983 Input validation error in radare2 - CVE-2019-19647

Vulnerability identifier: #VU49983

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/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-2019-19647

CWE-ID: CWE-20

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 insufficient validation of user-supplied input within the  r_asm_pseudo_incbin(0 function at libr/asm/asm.c. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

radare2: 3.0.0 - 4.0.0

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External links
https://github.com/radareorg/radare2/issues/15545
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WRQXCOVFWZIIMAZIAAFAVQGZOS7LGHXP/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YQTOWEDFXDTGTD6D4NHRB4FUURQSTTEN/

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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.