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Dnsmasq < 2.73rc4 DoS Vulnerability

Information

Severity

Severity

Medium

Family

Family

Denial of Service

CVSSv2 Base

CVSSv2 Base

6.4

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:N/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

1 year ago

Modified

Modified

1 year ago

Summary

Dnsmasq is prone to a Denial of Service (DoS) vulnerability.

Insight

Insight

The tcp_request function in Dnsmasq does not properly handle the return value of the setup_reply function, which allows remote attackers to read process memory and cause a denial of service (out-of-bounds read and crash) via a malformed DNS request.

Affected Software

Affected Software

Dnsmasq prior to 2.73rc4.

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

Update to version 2.73rc4 or later.

Common Vulnerabilities and Exposures (CVE)