CVE-2017-18367 Improper Input Validation in libseccomp-golang
Attackers can bypass seccomp restrictions by exploiting incorrect BPF generation in libseccomp-golang, allowing unauthorized syscall execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-18367?
CVE-2017-18367 is a high-severity vulnerability in n/a, published on 24 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
libseccomp-golang 0.9.0 and earlier incorrectly generates BPFs that OR multiple arguments rather than ANDing them. A process running under a restrictive seccomp filter that specified multiple syscall arguments could bypass intended access restrictions by specifying a single matching argument.
Weakness: CWE-20
Which versions are affected by CVE-2017-18367?
3 open source packages ship an affected version, including github.com/seccomp/libseccomp-golang. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/seccomp/libseccomp-golang Go | All versions | 0.9.1 |
github.com/seccomp/libseccomp-golang Go | All versions | 0.9.1 |
github.com/seccomp/libseccomp-golang Go | All versions | 0.9.1-0.20170424173420-06e7a29f36a3 |
Products include Libseccomp-Golang Project Libseccomp-Golang.
How do I fix CVE-2017-18367?
Upgrade github.com/seccomp/libseccomp-golang to a fixed version for your release line: 0.9.1 or 0.9.1-0.20170424173420-06e7a29f36a3.
Is CVE-2017-18367 being exploited?
There is no known exploitation of CVE-2017-18367 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2017-18367, DLA-2320-1, GHSA-58v3-j75h-xr49, GO-2020-0007, UBUNTU-CVE-2017-18367, USN-4574-1.