CVE-2018-0175KEV · OVERDUECWE-119

Cisco IOS, XR, and XE Software Buffer Overflow Vulnerability

High · published March 28, 2018

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 8.0. It is confirmed in active exploitation. It sits in the 89.0th percentile for exploit probability.

1680
days past CISA
deadline
CVSS v3.1
8.0
EPSS
3%
Percentile
89.0
In the wild
Confirmed
What it is

🚨 A sneaky format string vulnerability in Cisco's LLDP subsystem could let an adjacent attacker wreak havoc - think of it as a neighbor having the keys to your house! 🔥 Picture a restaurant where a diner can not only place an order but change the entire menu - that's how this vulnerability lets attackers execute arbitrary code without any authentication. They just need to be close enough! If exploited, this vulnerability can lead to a denial of service (DoS) condition or allow attackers to run arbitrary code with elevated privileges. This means they could potentially take over devices, leading to devastating consequences for network security and stability.

Put simply

Picture a restaurant where a diner can not only place an order but change the entire menu - that's how this vulnerability lets attackers execute arbitrary code without any authentication. They just need to be close enough! This format string vulnerability in the Link Layer Discovery Protocol (LLDP) subsystem affects multiple Cisco software versions, allowing attackers to manipulate memory and execute arbitrary code with high privileges.

What to do

If exploited, this vulnerability can lead to a denial of service (DoS) condition or allow attackers to run arbitrary code with elevated privileges. This means they could potentially take over devices, leading to devastating consequences for network security and stability. To protect your systems, update Cisco IOS Software, IOS XE Software, and IOS XR Software to the latest patched versions. Regularly audit your network devices for any signs of this vulnerability and ensure proper access controls are in place to minimize risk. You’ve got this! Taking these steps will lock down your network and keep those digital intruders at bay! 🛡️

The record
Technical detail
CVSS v3.1
8.0 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.03478 · 89.0th percentile
Weakness
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer
Published
2018-03-28T22:00Z
KEV added
2022-03-03 · due 2022-03-17
EPSS history
Timeline
  • 03 MAR 00:00Z
    Added to CISA KEV — remediate by Mar 17
    kev
  • 28 MAR 22:00Z
    Format String vulnerability in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could…
    cvelistv5