UBUNTU-CVE-2017-17450
net/netfilter/xt_osf.c in the Linux kernel through 4.14.4 does not require the CAP_NET_ADMIN capability for add_callback and remove_callback operations, which allows local users to bypass intended access restrictions because the xt_osf_fingers data structure is shared across all net namespaces.
02 / AFFECTED SOFTWARE
Affected packages
126 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/xt_osf.c in the Linux kernel through 4.14.4 does not require the CAP_NET_ADMIN capability for add_callback and remove_callback operations, which allows local users to bypass intended access restrictions because the xt_osf_fingers 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=916a27901de01446bcf57ecca4783f6cff493309
- https://lkml.org/lkml/2017/12/5/982
- https://ubuntu.com/security/CVE-2017-17450
- https://ubuntu.com/security/notices/USN-3583-1
- https://ubuntu.com/security/notices/USN-3583-2
- 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-3632-1
- https://www.cve.org/CVERecord?id=CVE-2017-17450