Auth bypass in Linux Kernel
CVE-2019-17055
base_sock_create in drivers/isdn/mISDN/socket.c in the AF_ISDN network module in the Linux kernel through 5.3.2 does not enforce CAP_NET_RAW, which means that unprivileged users can create a raw socket, aka CID-b91ee4aa2a21.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (43.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Linux Kernel
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Debian Linux — versions 8.0
- Fedoraproject Fedora — versions 29
- openSUSE Leap — versions 15.0, 15.1
- Red Hat Enterprise Linux Desktop — versions 6.0
- Red Hat Enterprise Linux Server — versions 6.0
- Red Hat Enterprise Linux Workstation — versions 6.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- seclists.org/bugtraq/2019/Nov/11 (mailing-list, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2… (VDB Entry, Third Party Advisory)
- usn.ubuntu.com/4185-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4184-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4186-1/ (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-11/msg00035.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-11/msg00039.html (vendor-advisory, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-17055?
- CVE-2019-17055 is a low-severity vulnerability in Linux Kernel, classified under Missing Authorization. CVSS score: 3.3/10. Published 2019-10-01.
- How severe is CVE-2019-17055?
- Low severity. CVSS v3 base score is 3.3 out of 10.
- Is CVE-2019-17055 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.