SB2021031205 - Spoofing attack in NetBSD
Published: March 12, 2021
Security Bulletin ID
SB2021031205
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use of insufficiently random values (CVE-ID: N/A)
CWE-ID: CWE-330 - Use of Insufficiently Random Values
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a spoofing attack.
The vulnerability exists due to IP ID randomization is not enabled by default for IPv4 and IPv6 fragments and TCP ISS random generation has an information leak. A remote attacker can analyze packets received from the system and use the obtained information to spoof packets.
Remediation
Install update from vendor's website.