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Junos IPv6 to IPv4 Translating Denial of Service Vulnerability

Information

Severity

Severity

Medium

Family

Family

JunOS Local Security Checks

CVSSv2 Base

CVSSv2 Base

5.4

CVSSv2 Vector

CVSSv2 Vector

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

Solution Type

Solution Type

Vendor Patch

Created

Created

9 years ago

Modified

Modified

5 years ago

Summary

DoS when translating from IPv6 to IPv4.

Insight

Insight

A denial of service (DoS) issue has been discovered in Juniper SRX Series products that can be exploited by remote unauthenticated attackers. This issue takes place when a certain malformed packet is translated from IPv6 to IPv4. When this malformed packet is sent to a vulnerable SRX Series device, the flowd process may crash.

Affected Software

Affected Software

Junos OS 11.4, 12.1, 12.1X44, 12.1X45 and 12.1X46.

Detection Method

Detection Method

Checks if a vulnerable OS build is present on the target host.

Solution

Solution

New builds of Junos OS software are available from Juniper. As a workaround disable NAT translation from IPv6 to IPv4 if not required.

Common Vulnerabilities and Exposures (CVE)