CVE-2019-13207

nsd-checkzone in NLnet Labs NSD 4.2.0 has a Stack-based Buffer Overflow in the dname_concatenate() function in dname.c

published July 3, 2019

CVSS
—
EPSS
2%
Percentile
80.8
In the wild
Unconfirmed
What it is

⚠️ A buffer overflow in the dname_concatenate() function? That’s like a soda bottle that's been shaken and is just waiting to explode! Think of this vulnerability as a party with an open invitation. If too many guests (data) show up, they start spilling out into the hallway, causing chaos everywhere! If an attacker manages to exploit this vulnerability, they could potentially execute arbitrary code, leading to a complete system compromise. This could escalate to data leaks or even a full-blown denial of service, turning your server into a party crasher's worst nightmare!

Put simply

Think of this vulnerability as a party with an open invitation. If too many guests (data) show up, they start spilling out into the hallway, causing chaos everywhere! The vulnerability in nsd-checkzone occurs due to a stack-based buffer overflow in the dname_concatenate() function used in NSD 4.2.0, which allows attackers to overflow the stack with malicious data.

What to do

If an attacker manages to exploit this vulnerability, they could potentially execute arbitrary code, leading to a complete system compromise. This could escalate to data leaks or even a full-blown denial of service, turning your server into a party crasher's worst nightmare! Update to the latest version of NSD and review your code for any unsafe data handling practices. It's essential to monitor your environment for any unusual activities that might indicate exploitation attempts. You've got this! Stay vigilant, and keep your systems safe! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02026 · 80.8th percentile
Published
2019-07-03T19:49Z
EPSS history
Timeline
  • 03 JUL 19:49Z
    nsd-checkzone in NLnet Labs NSD 4.2.0 has a Stack-based Buffer Overflow in the dname_concatenate() function in dname.c
    cvelistv5