CVE-2017-13041

The ICMPv6 parser in tcpdump before 4.9.2 has a buffer over-read in print-icmp6.c:icmp6_nodeinfo_print()

Critical · published September 14, 2017

CVSS v3.1
9.8
EPSS
5%
Percentile
91.6
In the wild
Unconfirmed
What it is

🚨 A sneaky buffer over-read in tcpdump could leave your system vulnerable to unexpected behavior! 🔥 Think of this like a waiter who keeps pouring wine into a glass that’s already full, causing it to overflow — data can spill out uncontrollably, leading to messy situations. An attacker could exploit this oversight to cause unexpected behavior, potentially crashing services or revealing sensitive information. It’s like letting a bull roam around a fine dining establishment; chaos could ensue!

Put simply

Think of this like a waiter who keeps pouring wine into a glass that’s already full, causing it to overflow — data can spill out uncontrollably, leading to messy situations. This vulnerability allows for a buffer over-read in the ICMPv6 parser of tcpdump versions prior to 4.9.2, meaning an attacker might manipulate buffer limits to access unauthorized data.

What to do

An attacker could exploit this oversight to cause unexpected behavior, potentially crashing services or revealing sensitive information. It’s like letting a bull roam around a fine dining establishment; chaos could ensue! Upgrade tcpdump to version 4.9.2 or later to close this critical vulnerability. It's important to audit your existing installations and ensure that any related services are also secured against potential exploits. You've got this! Just follow these steps, and you'll keep your systems safe and sound. 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.04598 · 91.6th percentile
Published
2017-09-14T06:00Z
EPSS history
Timeline
  • 14 SEP 06:00Z
    The ICMPv6 parser in tcpdump before 4.9.2 has a buffer over-read in print-icmp6.c:icmp6_nodeinfo_print()
    cvelistv5