CVE-2019-11577

dhcpcd before 7.2.1 contains a buffer overflow in dhcp6_findna in dhcp6.c when reading NA/TA addresses

published April 28, 2019

Patch now

High probability of exploitation

NVD has not assigned a CVSS score to this record. It sits in the 99.0th percentile for exploit probability.

CVSS
โ€”
EPSS
53%
Percentile
99.0
In the wild
Unconfirmed
What it is

โš ๏ธ A clever little buffer overflow lurks in dhcpcd before version 7.2.1, waiting to trip up unsuspecting systems! ๐Ÿ” Think of this vulnerability like an overflowing bathtub that doesn't have an overflow drain โ€” once the water spills over, it can cause a real mess, potentially affecting the whole room! ๐Ÿ’ฆ If exploited, this buffer overflow could allow an attacker to insert malicious code, leading to unexpected behavior or crashes of the dhcpcd service. While it might not be actively targeted right now, the aftermath of a successful exploit could be a chaotic network environment!

Put simply

Think of this vulnerability like an overflowing bathtub that doesn't have an overflow drain โ€” once the water spills over, it can cause a real mess, potentially affecting the whole room! ๐Ÿ’ฆ This vulnerability occurs in the `dhcp6_findna` function in `dhcp6.c`, where insufficient checks during the processing of NA/TA addresses can lead to a buffer overflow. This means extra data can overwrite memory, potentially allowing attackers to execute harmful code.

What to do

If exploited, this buffer overflow could allow an attacker to insert malicious code, leading to unexpected behavior or crashes of the dhcpcd service. While it might not be actively targeted right now, the aftermath of a successful exploit could be a chaotic network environment! To safeguard against this issue, update dhcpcd to version 7.2.1 or higher immediately. Additionally, review your network configurations to ensure that outdated dhcpcd versions aren't lingering on any devices. ๐Ÿ›ก๏ธ You've got this! By taking these steps, you're protecting your network and keeping it running smooth. ๐Ÿš€

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.53095 ยท 99.0th percentile
Published
2019-04-28T15:22Z
EPSS history
Timeline
  • 28 APR 15:22Z
    dhcpcd before 7.2.1 contains a buffer overflow in dhcp6_findna in dhcp6.c when reading NA/TA addresses
    cvelistv5