CVE-2017-18509

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Source
https://cve.org/CVERecord?id=CVE-2017-18509
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2017-18509.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2017-18509
Aliases
Downstream
Related
Published
2019-08-13T14:15:11.977Z
Modified
2026-02-11T13:59:34.692552Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

An issue was discovered in net/ipv6/ip6mr.c in the Linux kernel before 4.11. By setting a specific socket option, an attacker can control a pointer in kernel land and cause an inetcsklistenstop general protection fault, or potentially execute arbitrary code under certain circumstances. The issue can be triggered as root (e.g., inside a default LXC container or with the CAPNETADMIN capability) or after namespace unsharing. This occurs because sktype and protocol are not checked in the appropriate part of the ip6mroute* functions. NOTE: this affects Linux distributions that use 4.9.x longterm kernels before 4.9.187.

References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
99253eb750fda6a644d5188fb26c43bad8d5a745
Introduced
c470abd4fde40ea6a0846a2beab642a578c0b8cd
Fixed
a351e9b9fc24e982ec2f0e76379a49826036da12

Affected versions

v4.*
v4.10

Database specific

vanir_signatures 
[
    {
        "signature_type": "Function",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git@99253eb750fda6a644d5188fb26c43bad8d5a745",
        "digest": {
            "function_hash": "334410933136282710967774068023981460530",
            "length": 2763.0
        },
        "target": {
            "file": "net/ipv6/ip6mr.c",
            "function": "ip6_mroute_setsockopt"
        },
        "id": "CVE-2017-18509-3385e0c1",
        "deprecated": false,
        "signature_version": "v1"
    },
    {
        "signature_type": "Line",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git@99253eb750fda6a644d5188fb26c43bad8d5a745",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "298009621754784947338976317639313641580",
                "238898635758313853733269622164346830466",
                "164981494354328959081603277826549826038",
                "54730709383692090809855170929975497157",
                "100812824994221953414922115304082628324",
                "161321961574033993320537476681077070219",
                "307616960852696608536787177282000021506",
                "260955927640175033788372205548123349701",
                "3013348516959180471679634323967881011",
                "36801583908514757786675713252300506322",
                "238898635758313853733269622164346830466",
                "164981494354328959081603277826549826038"
            ]
        },
        "target": {
            "file": "net/ipv6/ip6mr.c"
        },
        "id": "CVE-2017-18509-4347aeea",
        "deprecated": false,
        "signature_version": "v1"
    },
    {
        "signature_type": "Function",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git@99253eb750fda6a644d5188fb26c43bad8d5a745",
        "digest": {
            "function_hash": "213724507498041325655797406518481755665",
            "length": 772.0
        },
        "target": {
            "file": "net/ipv6/ip6mr.c",
            "function": "ip6_mroute_getsockopt"
        },
        "id": "CVE-2017-18509-6d5b4664",
        "deprecated": false,
        "signature_version": "v1"
    }
]
source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2017-18509.json"