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Fencer Vulns
high 7.5

CVE-2017-1000410 json

The Linux kernel version 3.3-rc1 and later is affected by a vulnerability lies in the processing of incoming L2CAP commands - ConfigRequest…

published 2017-12-07 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-1549

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.3%
EPSS 4.3% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

The Linux kernel version 3.3-rc1 and later is affected by a vulnerability lies in the processing of incoming L2CAP commands - ConfigRequest, and ConfigResponse messages. This info leak is a result of uninitialized stack variables that may be returned to an attacker in their uninitialized state. By manipulating the code flows that precede the handling of these configuration messages, an attacker can also gain some control over which data will be held in the uninitialized stack variables. This can allow him to bypass KASLR, and stack canaries protection - as both pointers and stack canaries may be leaked in this manner. Combining this vulnerability (for example) with the previously disclosed RCE vulnerability in L2CAP configuration parsing (CVE-2017-1000251) may allow an attacker to exploit the RCE against kernels which were built with the above mitigations. These are the specifics of this vulnerability: In the function l2cap_parse_conf_rsp and in the function l2cap_parse_conf_req the following variable is declared without initialization: struct l2cap_conf_efs efs; In addition, when parsing input configuration parameters in both of these functions, the switch case for handling EFS elements may skip the memcpy call that will write to the efs variable: ... case L2CAP_CONF_EFS: if (olen == sizeof(efs)) memcpy(&efs, (void *)val, olen); ... The olen in the above if is attacker controlled, and regardless of that if, in both of these functions the efs variable would eventually be added to the outgoing configuration request that is being built: l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS, sizeof(efs), (unsigned long) &efs); So by sending a configuration request, or response, that contains an L2CAP_CONF_EFS element, but with an element length that is not sizeof(efs) - the memcpy to the uninitialized efs variable can be avoided, and the uninitialized variable would be returned to the attacker (16 bytes).

Patch / fix

  • linux linux_kernel 4.15
  • linux Debian 14, Debian 13, Debian 12 4.14.7-1

debian advisories DEBIAN-CVE-2017-1000410

  • linux Ubuntu 14.04 LTS 3.13.0-168.218
  • linux Ubuntu 16.04 LTS 4.4.0-119.143
  • linux-aws Ubuntu 14.04 LTS 4.4.0-1016.16
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1054.63
  • linux-gcp Ubuntu 16.04 LTS 4.15.0-1014.14~16.04.1
  • linux-gke Ubuntu 16.04 LTS 4.4.0-1031.31
  • linux-hwe Ubuntu 16.04 LTS 4.15.0-24.26~16.04.1
  • linux-kvm Ubuntu 16.04 LTS 4.4.0-1020.25

ubuntu advisories UBUNTU-CVE-2017-1000410

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel-alt RHEL 7 4.14.0-49.el7a
  • perf RHEL 7 4.14.0-49.el7a
  • kernel RHEL 7 4.14.0-49.el7a
  • python-perf RHEL 7 4.14.0-49.el7a
  • kernel-kdump RHEL 7 4.14.0-49.el7a
  • kernel-tools RHEL 7 4.14.0-49.el7a
  • kernel-tools-libs RHEL 7 4.14.0-49.el7a
  • kernel-bootwrapper RHEL 7 4.14.0-49.el7a

red hat advisories RHSA-2018:0654RHSA-2018:1062RHSA-2018:1319RHSA-2018:1170RHSA-2018:1130RHSA-2018:0676

  • kernel-rt SLE Real Time 12 SP2 4.4.104-24.1
  • kernel-syms-rt SLE Real Time 12 SP2 4.4.104-24.1
  • kernel-rt_debug SLE Real Time 12 SP2 4.4.104-24.1
  • kernel-source-rt SLE Real Time 12 SP2 4.4.104-24.1
  • kernel-syms SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2, SLES 12 SP2 +1 more 4.4.103-92.53.1
  • kernel-source SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2, SLES 12 SP2 +1 more 4.4.103-92.53.1
  • kernel-default SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2, SLES 12 SP2 +3 more 4.4.103-92.53.1
  • kernel-obs-build SLE Software Development Kit 12 SP2 4.4.103-92.53.1

suse advisories SUSE-SU-2018:0213-1SUSE-SU-2017:3410-1SUSE-SU-2017:3398-1

  • linux Arch Linux 4.14.4-1

arch linux advisories AVG-1983

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-1000410 updated cvss 6.5

kernel: Stack information leak in the EFS element

  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-862.el7, kernel 3.10.0-862.el7, python-perf 3.10.0-862.el7, kernel-tools 3.10.0-862.el7, kernel-tools-libs 3.10.0-862.el7, kernel-abi-whitelists 3.10.0-862.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-862.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-862.el7, kernel 3.10.0-862.el7, python-perf 3.10.0-862.el7, kernel-tools 3.10.0-862.el7, kernel-tools-libs 3.10.0-862.el7, kernel-abi-whitelists 3.10.0-862.el7, +1 more
    fixed: vendor fix RHSA-2018:1062
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.4) perf 3.10.0-693.25.2.el7, kernel 3.10.0-693.25.2.el7, python-perf 3.10.0-693.25.2.el7, kernel-tools 3.10.0-693.25.2.el7, kernel-tools-libs 3.10.0-693.25.2.el7, kernel-abi-whitelists 3.10.0-693.25.2.el7, +1 more
    fixed: vendor fix RHSA-2018:1130
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-862.el7
    fixed: vendor fix RHSA-2018:1062
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.25.2.el7
    fixed: vendor fix RHSA-2018:1130
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-696.28.1.el6, kernel 2.6.32-696.28.1.el6, kernel-firmware 2.6.32-696.28.1.el6, kernel-abi-whitelists 2.6.32-696.28.1.el6, kernel-debuginfo-common-i686 2.6.32-696.28.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.28.1.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf 2.6.32-696.28.1.el6, kernel-debuginfo-common-i686 2.6.32-696.28.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.28.1.el6
    fixed: vendor fix RHSA-2018:1319
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) perf 4.14.0-49.el7a, kernel 4.14.0-49.el7a, kernel-alt 4.14.0-49.el7a, python-perf 4.14.0-49.el7a, kernel-kdump 4.14.0-49.el7a, kernel-tools 4.14.0-49.el7a, +6 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debuginfo-common-aarch64 4.14.0-49.el7a, kernel-debuginfo-common-ppc64le 4.14.0-49.el7a
    fixed: vendor fix RHSA-2018:0654
  • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt 3.10.0-862.rt56.804.el7, kernel-rt-trace 3.10.0-862.rt56.804.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-862.rt56.804.el7 Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-862.rt56.804.el7, kernel-rt-kvm 3.10.0-862.rt56.804.el7, kernel-rt-trace 3.10.0-862.rt56.804.el7, kernel-rt-debug-kvm 3.10.0-862.rt56.804.el7, kernel-rt-trace-kvm 3.10.0-862.rt56.804.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-862.rt56.804.el7
    fixed: vendor fix RHSA-2018:0676
  • Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-696.28.1.el6, kernel 2.6.32-696.28.1.el6, kernel-firmware 2.6.32-696.28.1.el6, kernel-abi-whitelists 2.6.32-696.28.1.el6, kernel-debuginfo-common-i686 2.6.32-696.28.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.28.1.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf 2.6.32-696.28.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.28.1.el6 Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-696.28.1.el6, kernel 2.6.32-696.28.1.el6, kernel-kdump 2.6.32-696.28.1.el6, kernel-firmware 2.6.32-696.28.1.el6, kernel-bootwrapper 2.6.32-696.28.1.el6, kernel-abi-whitelists 2.6.32-696.28.1.el6, +4 more
    fixed: vendor fix RHSA-2018:1319
show 11 more
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-862.el7, kernel 3.10.0-862.el7, python-perf 3.10.0-862.el7, kernel-kdump 3.10.0-862.el7, kernel-tools 3.10.0-862.el7, kernel-tools-libs 3.10.0-862.el7, +6 more
    fixed: vendor fix RHSA-2018:1062
  • Red Hat Enterprise Linux Server EUS (v. 7.4) perf 3.10.0-693.25.2.el7, kernel 3.10.0-693.25.2.el7, python-perf 3.10.0-693.25.2.el7, kernel-kdump 3.10.0-693.25.2.el7, kernel-tools 3.10.0-693.25.2.el7, kernel-tools-libs 3.10.0-693.25.2.el7, +6 more
    fixed: vendor fix RHSA-2018:1130
  • Red Hat Enterprise Linux Server Optional (v. 6) python-perf 2.6.32-696.28.1.el6, kernel-debuginfo-common-i686 2.6.32-696.28.1.el6, kernel-debuginfo-common-ppc64 2.6.32-696.28.1.el6, kernel-debuginfo-common-s390x 2.6.32-696.28.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.28.1.el6
    fixed: vendor fix RHSA-2018:1319
  • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-862.el7, kernel-debuginfo-common-x86_64 3.10.0-862.el7, kernel-debuginfo-common-ppc64le 3.10.0-862.el7
    fixed: vendor fix RHSA-2018:1062
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.4) kernel-debuginfo-common-ppc64 3.10.0-693.25.2.el7, kernel-debuginfo-common-x86_64 3.10.0-693.25.2.el7, kernel-debuginfo-common-ppc64le 3.10.0-693.25.2.el7
    fixed: vendor fix RHSA-2018:1130
  • Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-696.28.1.el6, kernel 2.6.32-696.28.1.el6, kernel-firmware 2.6.32-696.28.1.el6, kernel-abi-whitelists 2.6.32-696.28.1.el6, kernel-debuginfo-common-i686 2.6.32-696.28.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.28.1.el6
    fixed: vendor fix RHSA-2018:1319
  • Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-862.el7, kernel 3.10.0-862.el7, python-perf 3.10.0-862.el7, kernel-tools 3.10.0-862.el7, kernel-tools-libs 3.10.0-862.el7, kernel-abi-whitelists 3.10.0-862.el7, +1 more
    fixed: vendor fix RHSA-2018:1062
  • Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf 2.6.32-696.28.1.el6, kernel-debuginfo-common-i686 2.6.32-696.28.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.28.1.el6
    fixed: vendor fix RHSA-2018:1319
  • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-862.el7
    fixed: vendor fix RHSA-2018:1062
  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.0-693.25.2.rt56.612.el6rt, kernel-rt-trace 3.10.0-693.25.2.rt56.612.el6rt, kernel-rt-vanilla 3.10.0-693.25.2.rt56.612.el6rt, kernel-rt-firmware 3.10.0-693.25.2.rt56.612.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.0-693.25.2.rt56.612.el6rt
    fixed: vendor fix RHSA-2018:1170
  • Red Hat Enterprise Linux 5 kernel
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.25% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.