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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.010 (61.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 61.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Broadcom Tcpreplay — versions 4.3.0
Weakness classification (CWE)
References
- github.com/appneta/tcpreplay/issues/486 (Exploit, Third Party Advisory)
- github.com/SegfaultMasters/covering360/tree/master/tcpreplay (Exploit, Third Party Advisory)
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.