vulnwire
7.8high

CVE-2017-16995in critical feed4 exploits

The check_alu_op function in kernel/bpf/verifier.c in the Linux kernel through 4.4 allows local users to cause a denial of service (memory…

Published 8 y ago · modified 4 mo ago · JSON

CVSS
7.8
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
30.1%
percentile 98%
Public exploits
4
Metasploit · Exploit-DB

The check_alu_op function in kernel/bpf/verifier.c in the Linux kernel through 4.4 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging incorrect sign extension.

Exploit prediction (EPSS)

30.05% probability of exploitation in the next 30 days, higher than 98% of all scored CVEs.

Exploits and detections

  • Metasploit exploit/linux/local/bpf_sign_extension_priv_esc Linux BPF Sign Extension Local Privilege Escalation · metasploit exploit, great rank · 2017-11-12
  • EDB-45058 Linux - BPF Sign Extension Local Privilege Escalation (Metasploit) · local · 2018-07-19
  • EDB-45010 Linux Kernel < 4.13.9 (Ubuntu 16.04 / Fedora 27) - Local Privilege Escalation · local · 2018-07-10
  • EDB-44298 Linux Kernel < 4.4.0-116 (Ubuntu 16.04.4) - Local Privilege Escalation · local · 2018-03-16

CVSS scores

Assigned byVersionScoreVector
NVD3.17.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD2.07.2AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
Technology feeds
Linux kernel (RSS, critical only)

References

  • exploit-db.com /exploits/45058/ · exploit, x_refsource_EXPLOIT-DB, x_transferred
  • github.com /torvalds/linux/commit/95a762e2c8c942780948091f8f2a4f32fce1ac6f · x_refsource_MISC, x_transferred
  • usn.ubuntu.com /3619-2/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • bugs.chromium.org /p/project-zero/issues/detail?id=1454 · x_refsource_MISC, x_transferred
  • usn.ubuntu.com /3633-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • securityfocus.com /bid/102288 · vdb-entry, x_refsource_BID, x_transferred
  • exploit-db.com /exploits/44298/ · exploit, x_refsource_EXPLOIT-DB, x_transferred
  • exploit-db.com /exploits/45010/ · exploit, x_refsource_EXPLOIT-DB, x_transferred
  • debian.org /security/2017/dsa-4073 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • usn.ubuntu.com /usn/usn-3523-2/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • openwall.com /lists/oss-security/2017/12/21/2 · x_refsource_MISC, x_transferred
  • usn.ubuntu.com /3619-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • git.kernel.org /cgit/linux/kernel/git/torvalds/linux.git/commit/?id=95a762e2c8c942780948091f8f2a4f32fce1a · x_refsource_MISC, x_transferred
  • git.kernel.org /pub/scm/linux/kernel/git/tip/tip.git/commit/?id=a6132276ab5dcc38b3299082efeb25b948263adb · x_refsource_CONFIRM, x_transferred

Sources

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