CVE-2017-2671

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

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

V2 Legend

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
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://access.redhat.com/errata/RHSA-2017:1842
https://access.redhat.com/errata/RHSA-2017:2077
https://access.redhat.com/errata/RHSA-2017:2669
https://access.redhat.com/errata/RHSA-2018:1854
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
https://github.com/danieljiang0415/android_kernel_crash_poc Third Party Advisory
https://github.com/torvalds/linux/commit/43a6684519ab0a6c52024b5e25322476cabad893 Issue Tracking Patch Third Party Advisory
https://twitter.com/danieljiang0415/status/845116665184497664 Third Party Advisory
https://usn.ubuntu.com/3754-1/
https://www.exploit-db.com/exploits/42135/
Configurations

Configuration 1 (hide)

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

12 Feb 2023, 23:29

Type Values Removed Values Added
Summary A race condition leading to a NULL pointer dereference was found in the Linux kernel's Link Layer Control implementation. A local attacker with access to ping sockets could use this flaw to crash the system. 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.
References
  • {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1436649', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1436649', 'tags': [], 'refsource': 'MISC'}
  • {'url': 'https://access.redhat.com/security/cve/CVE-2017-2671', 'name': 'https://access.redhat.com/security/cve/CVE-2017-2671', 'tags': [], 'refsource': 'MISC'}

02 Feb 2023, 16:18

Type Values Removed Values Added
References
  • (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1436649 -
  • (MISC) https://access.redhat.com/security/cve/CVE-2017-2671 -
Summary 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. A race condition leading to a NULL pointer dereference was found in the Linux kernel's Link Layer Control implementation. A local attacker with access to ping sockets could use this flaw to crash the system.
Information

Published : 2017-04-05 06:59

Updated : 2023-12-10 12:01

NVD link : CVE-2017-2671

Mitre link : CVE-2017-2671

CVE.ORG link : CVE-2017-2671

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo