Integer overflow in LZ4

1) Integer overflow

EUVDB-ID: #VU53441

Risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/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-2014-4715

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in LZ4 library on certain 32-bit platforms. A remote attacker can create a specially crafted archive, trick the victim into opening it,trigger integer overflow and execute arbitrary code on the target system.

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

Mitigation

Install updates from vendor's website.

Vulnerable software versions

LZ4: r116 - r118

CPE2.3

• cpe:2.3:a:lz4:lz4:r116:*:*:*:*:*:*:*
• cpe:2.3:a:lz4:lz4:r117:*:*:*:*:*:*:*
• cpe:2.3:a:lz4:lz4:r118:*:*:*:*:*:*:*

External links

https://blog.securitymouse.com/2014/07/i-was-wrong-proving-lz4-exploitable.html
https://fastcompression.blogspot.fr/2014/07/software-vulnerabilities-how-it-works.html
https://secunia.com/advisories/59770
https://code.google.com/p/lz4/issues/detail?id=134
https://code.google.com/p/lz4/source/detail?r=119

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted archive.

Is there known malware, which exploits this vulnerability?

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