UBUNTU-CVE-2017-17448
net/netfilter/nfnetlink_cthelper.c in the Linux kernel through 4.14.4 does not require the CAP_NET_ADMIN capability for new, get, and del operations, which allows local users to bypass intended access restrictions because the nfnl_cthelper_list data structure is shared across all net namespaces.
02 / AFFECTED SOFTWARE
Affected packages
128 explicit affected versions
9 explicit affected versions
49 explicit affected versions
70 explicit affected versions
30 explicit affected versions
12 explicit affected versions
10 explicit affected versions
31 explicit affected versions
10 explicit affected versions
8 explicit affected versions
44 explicit affected versions
41 explicit affected versions
26 explicit affected versions
51 explicit affected versions
6 explicit affected versions
12 explicit affected versions
1 explicit affected versions
1 explicit affected versions
23 explicit affected versions
1 explicit affected versions
3 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
net/netfilter/nfnetlink_cthelper.c in the Linux kernel through 4.14.4 does not require the CAP_NET_ADMIN capability for new, get, and del operations, which allows local users to bypass intended access restrictions because the nfnl_cthelper_list data structure is shared across all net namespaces.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf.git/commit/?id=4b380c42f7d00a395feede754f0bc2292eebe6e5
- https://patchwork.kernel.org/patch/10089373/
- https://ubuntu.com/security/CVE-2017-17448
- https://ubuntu.com/security/notices/USN-3617-1
- https://ubuntu.com/security/notices/USN-3617-2
- https://ubuntu.com/security/notices/USN-3617-3
- https://ubuntu.com/security/notices/USN-3619-1
- https://ubuntu.com/security/notices/USN-3619-2
- https://ubuntu.com/security/notices/USN-3620-1
- https://ubuntu.com/security/notices/USN-3620-2
- https://ubuntu.com/security/notices/USN-3632-1
- https://www.cve.org/CVERecord?id=CVE-2017-17448