Buffer overflow in ISC Dhcp

1) Buffer overflow

EUVDB-ID: #VU42941

Risk: Low

CVSSv4.0: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2013-2494

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote #AU# to perform a denial of service (DoS) attack.

libdns in ISC DHCP 4.2.x before 4.2.5-P1 allows remote name servers to cause a denial of service (memory consumption) via vectors involving a regular expression, as demonstrated by a memory-exhaustion attack against a machine running a dhcpd process, a related issue to CVE-2013-2266.

Mitigation

Install update from vendor's website.

Vulnerable software versions

DHCP: 4.2.0 - 4.2.5

CPE2.3

• cpe:2.3:a:isc:dhcp:4.2.5:*:*:*:*:*:*:*

External links

https://kb.isc.org/article/AA-00880/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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