#VU43785 Buffer overflow in DHCP - CVE-2012-3570

Vulnerability identifier: #VU43785

Vulnerability risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-3570

CWE-ID: CWE-119

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
DHCP
Server applications / Other server solutions

Vendor: ISC

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

Buffer overflow in ISC DHCP 4.2.x before 4.2.4-P1, when DHCPv6 mode is enabled, allows remote attackers to cause a denial of service (segmentation fault and daemon exit) via a crafted client identifier parameter.

Mitigation
Install update from vendor's website.

Vulnerable software versions

DHCP: 4.2.0 - 4.2.4

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External links
https://lists.opensuse.org/opensuse-updates/2012-08/msg00030.html
https://security.gentoo.org/glsa/glsa-201301-06.xml
https://www.mandriva.com/security/advisories?name=MDVSA-2012:115
https://www.securityfocus.com/bid/54665
https://kb.isc.org/article/AA-00714

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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