CVE-2017-13015

The EAP parser in tcpdump before 4.9.2 has a buffer over-read in print-eap.c:eap_print()

Critical · published September 14, 2017

CVSS v3.1
9.8
EPSS
2%
Percentile
83.7
In the wild
Unconfirmed
What it is

🚨 A sneaky buffer over-read lurks in tcpdump before version 4.9.2! This flaw could expose sensitive data like an open book on a crowded subway. 🔥 Think of this vulnerability like a waiter serving food from a plate that’s stacked too high—the bottom layers get ignored, and you might miss the critical ingredients hidden underneath. This buffer over-read can leak sensitive information, making it a potential feast for attackers! With this buffer over-read, an attacker could gain access to confidential information that should’ve stayed hidden. This could be absolutely devastating, allowing them to see data they shouldn’t and potentially compromise network security!

Put simply

Think of this vulnerability like a waiter serving food from a plate that’s stacked too high—the bottom layers get ignored, and you might miss the critical ingredients hidden underneath. This buffer over-read can leak sensitive information, making it a potential feast for attackers! The EAP parser in tcpdump fails to properly restrict memory reads, allowing it to read beyond the allocated buffer in print-eap.c, which can expose sensitive data.

What to do

With this buffer over-read, an attacker could gain access to confidential information that should’ve stayed hidden. This could be absolutely devastating, allowing them to see data they shouldn’t and potentially compromise network security! Upgrade tcpdump to version 4.9.2 or later immediately to close this critical vulnerability. Ensure that your systems are patched, and conduct a security audit to confirm that there are no lingering effects from previous versions. Don’t wait—this needs fixing now! You’ve got this! Follow these steps and help lock down your network against this vulnerability! 🛡️

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
0.02389 · 83.7th percentile
Published
2017-09-14T06:00Z
EPSS history
Timeline
  • 14 SEP 06:00Z
    The EAP parser in tcpdump before 4.9.2 has a buffer over-read in print-eap.c:eap_print()
    cvelistv5