Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2009-2958

Severity CVSS v4.0:
Pending analysis
Type:
CWE-399 Resource Management Errors
Publication date:
02/09/2009
Last modified:
09/04/2025

Description

The tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a TFTP read (aka RRQ) request with a malformed blksize option.

Impact

Vector 2.0
AV:N/AC:M/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
4.30
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:* 2.49 (including)
cpe:2.3:a:thekelleys:dnsmasq:0.4:*:*:*:*:*:*:*
cpe:2.3:a:thekelleys:dnsmasq:0.5:*:*:*:*:*:*:*
cpe:2.3:a:thekelleys:dnsmasq:0.6:*:*:*:*:*:*:*
cpe:2.3:a:thekelleys:dnsmasq:0.7:*:*:*:*:*:*:*
cpe:2.3:a:thekelleys:dnsmasq:0.95:*:*:*:*:*:*:*
cpe:2.3:a:thekelleys:dnsmasq:0.96:*:*:*:*:*:*:*
cpe:2.3:a:thekelleys:dnsmasq:0.98:*:*:*:*:*:*:*
cpe:2.3:a:thekelleys:dnsmasq:0.992:*:*:*:*:*:*:*
cpe:2.3:a:thekelleys:dnsmasq:0.996:*:*:*:*:*:*:*
cpe:2.3:a:thekelleys:dnsmasq:1.0:*:*:*:*:*:*:*
cpe:2.3:a:thekelleys:dnsmasq:1.2:*:*:*:*:*:*:*
cpe:2.3:a:thekelleys:dnsmasq:1.3:*:*:*:*:*:*:*
cpe:2.3:a:thekelleys:dnsmasq:1.4:*:*:*:*:*:*:*
cpe:2.3:a:thekelleys:dnsmasq:1.5:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools