CVE-2017-2671

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.

CVSS v3.0 5.5 MEDIUM
CVSS v2.0 4.9 MEDIUM

5.5^/10

CVSS v3.0 : MEDIUM

Vector : AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.9^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:N/C:N/I:N/A:C

Exploitability : 3.9 / Impact : 6.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
https://twitter.com/danieljiang0415/status/845116665184497664	Third Party Advisory
https://github.com/torvalds/linux/commit/43a6684519ab0a6c52024b5e25322476cabad893	Issue Tracking Patch Third Party Advisory
https://github.com/danieljiang0415/android_kernel_crash_poc	Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/net/ipv4/ping.c?id=43a6684519ab0a6c52024b5e25322476cabad893	Issue Tracking Patch Third Party Advisory
http://openwall.com/lists/oss-security/2017/04/04/8	Mailing List Third Party Advisory
http://www.securityfocus.com/bid/97407	Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/42135/
https://access.redhat.com/errata/RHSA-2017:2669
https://access.redhat.com/errata/RHSA-2017:2077
https://access.redhat.com/errata/RHSA-2017:1842
https://access.redhat.com/errata/RHSA-2018:1854
https://usn.ubuntu.com/3754-1/

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Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Information

Published : 2017-04-04 23:59

Updated : 2023-02-12 15:29

NVD link : CVE-2017-2671

Mitre link : CVE-2017-2671

JSON object : View

CWE

NVD-CWE-noinfo

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Products Affected

linux

linux_kernel

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