Vulnerability identifier: #VU27339

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2015-1817

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
musl libc
Universal components / Libraries / Libraries used by multiple products

Vendor: GNU

Description

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

The vulnerability exists due to a boundary error within the inet_pton() function in network/inet_pton.c. A remote unauthenticated attacker can send specially crafted data to the application, trigger stack-based buffer overflow and execute arbitrary code on the target system.

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

Mitigation
Install update from vendor's website.

Vulnerable software versions

musl libc: 0.9.15 - 1.1.7

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External links
http://www.openwall.com/lists/oss-security/2015/03/30/3
http://www.securityfocus.com/bid/73408

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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.