Vulnerability identifier: #VU6349
Vulnerability risk: High
CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-121
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
libevent
Universal components / Libraries /
Libraries used by multiple products
Vendor: libevent
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to boundary error in evutil_parse_sockaddr_port() function in evutil.c within libevent library before 2.1.6-beta. A remote attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Mitigation
Update to version 2.1.6-beta or later.
Vulnerable software versions
libevent: 2.1.6
External links
http://www.openwall.com/lists/oss-security/2017/01/31/17
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.