Vulnerability Name:

CVE-2017-17807 (CCN-136628)

Assigned:2017-12-08
Published:2017-12-08
Updated:2019-10-03
Summary:The KEYS subsystem in the Linux kernel before 4.14.6 omitted an access-control check when adding a key to the current task's "default request-key keyring" via the request_key() system call, allowing a local user to use a sequence of crafted system calls to add keys to a keyring with only Search permission (not Write permission) to that keyring, related to construct_get_dest_keyring() in security/keys/request_key.c.
CVSS v3 Severity:3.3 Low (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)
2.9 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)
4.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): High
Availibility (A): None
3.3 Low (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)
2.9 Low (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:C/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): Complete
Availibility (A): None
Vulnerability Type:CWE-862
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2017-17807

Source: CONFIRM
Type: Issue Tracking, Patch
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b

Source: CCN
Type: IBM Security Bulletin 794373 (PowerKVM)
Vulnerabilities in the Linux Kernel affect PowerKVM

Source: BID
Type: Third Party Advisory, VDB Entry
102301

Source: CCN
Type: BID-102301
Linux Kernel CVE-2017-17807 Local Denial of Service Vulnerability

Source: XF
Type: UNKNOWN
linux-kernel-cve201717807-sec-bypass(136628)

Source: CCN
Type: Linux Kernel GIT Repository
KEYS: add missing permission check for request_key() destination

Source: CONFIRM
Type: Issue Tracking, Patch
https://github.com/torvalds/linux/commit/4dca6ea1d9432052afb06baf2e3ae78188a4410b

Source: MLIST
Type: UNKNOWN
[debian-lts-announce] 20180107 [SECURITY] [DLA 1232-1] linux security update

Source: UBUNTU
Type: UNKNOWN
USN-3617-1

Source: UBUNTU
Type: UNKNOWN
USN-3617-2

Source: UBUNTU
Type: UNKNOWN
USN-3617-3

Source: UBUNTU
Type: UNKNOWN
USN-3619-1

Source: UBUNTU
Type: UNKNOWN
USN-3619-2

Source: UBUNTU
Type: UNKNOWN
USN-3620-1

Source: UBUNTU
Type: UNKNOWN
USN-3620-2

Source: UBUNTU
Type: UNKNOWN
USN-3632-1

Source: DEBIAN
Type: Third Party Advisory
DSA-4073

Source: DEBIAN
Type: UNKNOWN
DSA-4082

Source: CCN
Type: IBM Security Bulletin 6335281 (Data Risk Manager)
IBM Data Risk Manager is affected by multiple vulnerabilities

Source: CCN
Type: IBM Security Bulletin 6601941 (QRadar Network Security)
IBM QRadar Network Security is affected by multiple vulnerabilities in kernel.

Source: CONFIRM
Type: Issue Tracking, Mailing List, Release Notes
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.6

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2017-17807

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version < 4.14.6)

    • Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:7:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:7::client:*:*:*:*:*

    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:7::computenode:*:*:*:*:*

    • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:7::server:*:*:*:*:*

    • Configuration RedHat 5:
  • cpe:/o:redhat:enterprise_linux:7::workstation:*:*:*:*:*

    • Configuration RedHat 6:
  • cpe:/a:redhat:rhel_extras_rt:7:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:4.14.5:*:*:*:*:*:*:*
  • AND
  • cpe:/a:ibm:powerkvm:3.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:qradar_network_security:5.4.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:qradar_network_security:5.5.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:data_risk_manager:2.0.6:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.redhat.rhsa:def:20201070
    P
    		RHSA-2020:1070: kernel-rt security and bug fix update (Moderate)
    2020-03-31
    oval:com.redhat.rhsa:def:20201016
    P
    		RHSA-2020:1016: kernel security, bug fix, and enhancement update (Moderate)
    2020-03-31
    oval:com.ubuntu.artful:def:201717807000
    V
    		CVE-2017-17807 on Ubuntu 17.10 (artful) - medium.
    2017-12-20
    oval:com.ubuntu.bionic:def:2017178070000000
    V
    		CVE-2017-17807 on Ubuntu 18.04 LTS (bionic) - medium.
    2017-12-20
    oval:com.ubuntu.bionic:def:201717807000
    V
    		CVE-2017-17807 on Ubuntu 18.04 LTS (bionic) - medium.
    2017-12-20
    oval:com.ubuntu.xenial:def:2017178070000000
    V
    		CVE-2017-17807 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-12-20
    oval:com.ubuntu.trusty:def:201717807000
    V
    		CVE-2017-17807 on Ubuntu 14.04 LTS (trusty) - medium.
    2017-12-20
    oval:com.ubuntu.xenial:def:201717807000
    V
    		CVE-2017-17807 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-12-20
    BACK
    linux linux kernel *
    linux linux kernel 4.14.5
    ibm powerkvm 3.1
    ibm qradar network security 5.4.0
    ibm qradar network security 5.5.0
    ibm data risk manager 2.0.6