CVE-2018-17974: broadcom tcpreplay Out-of-bounds Read
Vulnerability summary
CVE-2018-17974 is a medium (CVSS 5.5) Out-of-bounds Read vulnerability in broadcom tcpreplay. EPSS estimates a 0.99% chance of exploitation in the next 30 days, higher than 61.7% of scored vulnerabilities. 2 public exploits are recorded.
Advisory lineage
Upstream 0 · Downstream 3 · Related 2Timeline
- 03-10-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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 metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.99%
Chance of exploitation in the next 30 days
Percentile
62%
Versus all other CVEs
30-day change
0.00 pp
From 0.99% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundTcpreplay
Maturity: poc
Covering360
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Broadcom1 product
- tcpreplay4.3.0:beta1
Debian1 product
- tcpreplay< 4.3.1-1
Ubuntu1 product
- tcpreplay< 3.4.4-2+deb8u1ubuntu0.1~esm1 | < 4.2.6-1ubuntu0.1~esm1
3 vendors · 3 products
References
6 links- github.com/SegfaultMasters/covering360/tree/master/tcpreplayX Refsource MISCExploitThird Party AdvisoryREPORT
