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Standardmäßig ist der Prompt ausgewählt, der zuerst die Quelle prüft. Sie können zu einem direkten Befehl wechseln oder eine lokale Kopie herunterladen.
Lesen Sie SKILL.md und alle von SkillsMP angezeigten Begleitdateien, bevor Sie sich für eine Installation entscheiden.
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npx skills add https://github.com/CyberStrikeus/CyberStrike --skill cis-ubuntu1604-v200-3-3-2Der Befehl bleibt in einer Zeile. Scrollen Sie horizontal, um ihn vor dem Kopieren vollständig zu prüfen.
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macOS post-exploitation for credential harvesting, DTrace monitoring, TCC bypass, and stealth operations via native tools
Windows userland post-exploitation for credential harvesting, monitoring, AMSI/ETW bypass, and stealth operations
Kubernetes post-exploitation for container escape, secret extraction, RBAC abuse, and cluster persistence
Basierend auf der SOC-Berufsklassifikation
SKILL.md wird angezeigt
| name | cis-ubuntu1604-v200-3-3-2 |
| description | Ensure ICMP redirects are not accepted |
| category | cis-networking |
| version | 2.0.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-16.04","networking"] |
| cis_id | 3.3.2 |
| cis_benchmark | CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
ICMP redirect messages are packets that convey routing information and tell your host (acting as a router) to send packets via an alternate path. It is a way of allowing an outside routing device to update your system routing tables. By setting net.ipv4.conf.all.accept_redirects and net.ipv6.conf.all.accept_redirects to 0, the system will not accept any ICMP redirect messages, and therefore, won't allow outsiders to update the system's routing tables.
Attackers could use bogus ICMP redirect messages to maliciously alter the system routing tables and get them to send packets to incorrect networks and allow your system packets to be captured.
None.
Run the following commands and verify output matches:
sysctl net.ipv4.conf.all.accept_redirects
sysctl net.ipv4.conf.default.accept_redirects
grep "net\.ipv4\.conf\.all\.accept_redirects" /etc/sysctl.conf /etc/sysctl.d/*
grep "net\.ipv4\.conf\.default\.accept_redirects" /etc/sysctl.conf /etc/sysctl.d/*
IF IPv6 is enabled:
Run the following commands and verify output matches:
sysctl net.ipv6.conf.all.accept_redirects
sysctl net.ipv6.conf.default.accept_redirects
grep "net\.ipv6\.conf\.all\.accept_redirects" /etc/sysctl.conf /etc/sysctl.d/*
grep "net\.ipv6\.conf\.default\.accept_redirects" /etc/sysctl.conf /etc/sysctl.d/*
OR verify IPv6 is disabled.
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
And the grep commands should return:
net.ipv4.conf.all.accept_redirects= 0
net.ipv4.conf.default.accept_redirects= 0
If IPv6 is enabled:
net.ipv6.conf.all.accept_redirects = 0
net.ipv6.conf.default.accept_redirects = 0
And the grep commands should return:
net.ipv6.conf.all.accept_redirects= 0
net.ipv6.conf.default.accept_redirects= 0
Set the following parameters in /etc/sysctl.conf or a /etc/sysctl.d/* file:
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
Run the following commands to set the active kernel parameters:
sysctl -w net.ipv4.conf.all.accept_redirects=0
sysctl -w net.ipv4.conf.default.accept_redirects=0
sysctl -w net.ipv4.route.flush=1
IF IPv6 is enabled:
Set the following parameters in /etc/sysctl.conf or a /etc/sysctl.d/* file:
net.ipv6.conf.all.accept_redirects = 0
net.ipv6.conf.default.accept_redirects = 0
Run the following commands to set the active kernel parameters:
sysctl -w net.ipv6.conf.all.accept_redirects=0
sysctl -w net.ipv6.conf.default.accept_redirects=0
sysctl -w net.ipv6.route.flush=1
accept_redirects is enabled (set to 1) by default.
Version 7
5.1 Establish Secure Configurations - Maintain documented, standard security configuration standards for all authorized operating systems and software.
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