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Sendmail smad Vulnerability

Information

Severity

Severity

High

Family

Family

Denial of Service

CVSSv2 Base

CVSSv2 Base

7.8

CVSSv2 Vector

CVSSv2 Vector

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

Solution Type

Solution Type

Vendor Patch

Created

Created

15 years ago

Modified

Modified

5 years ago

Summary

The remote host is subject to the 'smad' attack(sendmail accept dos).

Insight

Insight

Smad prevents sendmail from accepting legitimate connections. An attacker may use this flaw to prevent you from receiving any email, thus lowering the interest of being connected to internet. This attack is specific to some versions of the Linux kernel. There are various security bugs in the implementation of this service which can be used by an intruder to gain a root account rather easily.

Solution

Solution

Upgrade your Linux kernel to a newer version or filter incoming traffic to this port.