4.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
0.0004 Low
EPSS
Percentile
15.7%
The ping_unhash function in net/ipv4/ping.c in the Linux kernel through
4.10.8 is too late in obtaining a certain lock and consequently cannot
ensure that disconnect function calls are safe, which allows local users to
cause a denial of service (panic) by leveraging access to the protocol
value of IPPROTO_ICMP in a socket system call.
Author | Note |
---|---|
tyhicks | Ubuntu doesn’t enable unprivileged ping sockets by default |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 14.04 | noarch | linux | < 3.13.0-157.207 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < 4.4.0-79.100 | UNKNOWN |
ubuntu | 17.04 | noarch | linux | < 4.10.0-22.24 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1018.27 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-gke | < 4.4.0-1014.14 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-hwe | < 4.10.0-27.30~16.04.2 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-hwe-edge | < 4.10.0-27.30~16.04.2 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-lts-xenial | < 4.4.0-79.100~14.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-raspi2 | < 4.4.0-1057.64 | UNKNOWN |
ubuntu | 17.04 | noarch | linux-raspi2 | < 4.10.0-1006.8 | UNKNOWN |
openwall.com/lists/oss-security/2017/04/04/8
www.openwall.com/lists/oss-security/2017/03/24/6
github.com/danieljiang0415/android_kernel_crash_poc
launchpad.net/bugs/cve/CVE-2017-2671
nvd.nist.gov/vuln/detail/CVE-2017-2671
security-tracker.debian.org/tracker/CVE-2017-2671
twitter.com/danieljiang0415/status/845116665184497664
ubuntu.com/security/notices/USN-3312-1
ubuntu.com/security/notices/USN-3312-2
ubuntu.com/security/notices/USN-3314-1
ubuntu.com/security/notices/USN-3361-1
ubuntu.com/security/notices/USN-3754-1
www.cve.org/CVERecord?id=CVE-2017-2671
4.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
0.0004 Low
EPSS
Percentile
15.7%