CVE-2018-17974 — MEDIUM (5.5)

Vulnerability Description

An issue was discovered in Tcpreplay 4.3.0 beta1. A heap-based buffer over-read was triggered in the function dlt_en10mb_encode() of the file plugins/dlt_en10mb/en10mb.c, due to inappropriate values in the function memmove(). The length (pktlen + ctx -> l2len) can be larger than source value (packet + ctx->l2len) because the function fails to ensure the length of a packet is valid. This leads to Denial of Service.

CVSS Score

5.5

MEDIUM

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Broadcom	Tcpreplay	4.3.0

Related Weaknesses (CWE)

CWE-125

References

https://github.com/SegfaultMasters/covering360/tree/master/tcpreplayExploitThird Party Advisory
https://github.com/appneta/tcpreplay/issues/486ExploitThird Party Advisory
https://github.com/SegfaultMasters/covering360/tree/master/tcpreplayExploitThird Party Advisory
https://github.com/appneta/tcpreplay/issues/486ExploitThird Party Advisory

FAQ

What is CVE-2018-17974?

CVE-2018-17974 is a vulnerability with a CVSS score of 5.5 (MEDIUM). An issue was discovered in Tcpreplay 4.3.0 beta1. A heap-based buffer over-read was triggered in the function dlt_en10mb_encode() of the file plugins/dlt_en10mb/en10mb.c, due to inappropriate values i...

How severe is CVE-2018-17974?

CVE-2018-17974 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-17974?

Check the references section above for vendor advisories and patch information. Affected products include: Broadcom Tcpreplay.