What is CVE-2018-17974?

CVE-2018-17974 is a medium-severity vulnerability in Broadcom Tcpreplay, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2018-10-03.

How severe is CVE-2018-17974?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Out-of-bounds Read in Broadcom Tcpreplay

CVE-2018-17974

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.

Vulnerability class: Buffer Overflow

EPSS: 0.010 (58.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Broadcom Tcpreplay — versions 4.3.0
N/a — versions n/a

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-17974?: CVE-2018-17974 is a medium-severity vulnerability in Broadcom Tcpreplay, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2018-10-03.
How severe is CVE-2018-17974?: Medium severity. CVSS v3 base score is 5.5 out of 10.