Vulnerability CVE-2013-2494

Vulnerability Name:

CVE-2013-2494 (CCN-83144)

Assigned:

2013-03-26

Published:

2013-03-26

Updated:

2013-03-29

Summary:

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.

CVSS v3 Severity:

4.8 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): High Privileges Required (PR): Low User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

CVSS v2 Severity:

4.9 Medium (CVSS v2 Vector: AV:N/AC:H/Au:S/C:N/I:N/A:C)
3.6 Low (Temporal CVSS v2 Vector: AV:N/AC:H/Au:S/C:N/I:N/A:C/E:U/RL:OF/RC:C)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): High Authentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

4.9 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:S/C:N/I:N/A:C)
3.6 Low (CCN Temporal CVSS v2 Vector: AV:N/AC:H/Au:S/C:N/I:N/A:C/E:U/RL:OF/RC:C)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): High Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

Vulnerability Type:

CWE-119

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2013-2494

Source: CCN
Type: BID-58772
ISC DHCP 'libdns' CVE-2013-2494 Remote Denial of Service Vulnerability

Source: XF
Type: UNKNOWN
libdns-cve20132494-dos(83144)

Source: CCN
Type: ISC KB AA-00880
CVE-2013-2494: A Vulnerability in libdns Could Cause Excessive Memory Use in ISC DHCP 4.2

Source: CONFIRM
Type: Vendor Advisory
https://kb.isc.org/article/AA-00880/

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2013-2494

Vulnerable Configuration:

Configuration 1:

cpe:/a:isc:dhcp:4.2.0:-:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.0:a1:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.0:a2:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.0:b1:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.0:b2:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.0:p1:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.0:rc1:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.1:-:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.1:b1:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.1:rc1:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.2:-:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.2:b1:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.2:rc1:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.3:-:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.3:p1:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.3:p2:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.4:-:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.4:p1:*:*:*:*:*:*

OR cpe:/a:isc:dhcp:4.2.5:-:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:isc:dhcp:4.2.3:-:*:*:*:*:*:*