Vulnerability Name:

CVE-2018-20511 (CCN-154857)

Assigned:2018-09-13
Published:2018-09-13
Updated:2019-04-01
Summary:An issue was discovered in the Linux kernel before 4.18.11. The ipddp_ioctl function in drivers/net/appletalk/ipddp.c allows local users to obtain sensitive kernel address information by leveraging CAP_NET_ADMIN to read the ipddp_route dev and next fields via an SIOCFINDIPDDPRT ioctl call.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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): High
Integrity (I): None
Availibility (A): None
4.0 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
3.5 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
2.1 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-200
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2018-20511

Source: MISC
Type: Patch, Vendor Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9824dfae5741275473a23a7ed5756c7b6efacc9d

Source: BID
Type: Third Party Advisory, VDB Entry
106347

Source: MISC
Type: Release Notes, Vendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.11

Source: XF
Type: UNKNOWN
linux-kernel-cve201820511-info-disc(154857)

Source: CCN
Type: Linux Kernel GIT Repository
net/appletalk: fix minor pointer leak to userspace in SIOCFINDIPDDPRT

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/9824dfae5741275473a23a7ed5756c7b6efacc9d

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20190327 [SECURITY] [DLA 1731-1] linux security update

Source: MLIST
Type: UNKNOWN
[debian-lts-announce] 20190401 [SECURITY] [DLA 1731-2] linux regression update

Source: MISC
Type: Patch, Third Party Advisory
https://lkml.org/lkml/2018/9/27/480

Source: UBUNTU
Type: UNKNOWN
USN-4094-1

Source: UBUNTU
Type: UNKNOWN
USN-4118-1

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2018-20511

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version < 4.18.11)

    • Configuration 2:
  • cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:4.18.10:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.disco:def:2018205110000000
    V
    		CVE-2018-20511 on Ubuntu 19.04 (disco) - negligible.
    2018-12-27
    oval:com.ubuntu.bionic:def:201820511000
    V
    		CVE-2018-20511 on Ubuntu 18.04 LTS (bionic) - negligible.
    2018-12-27
    oval:com.ubuntu.cosmic:def:2018205110000000
    V
    		CVE-2018-20511 on Ubuntu 18.10 (cosmic) - negligible.
    2018-12-27
    oval:com.ubuntu.cosmic:def:201820511000
    V
    		CVE-2018-20511 on Ubuntu 18.10 (cosmic) - negligible.
    2018-12-27
    oval:com.ubuntu.bionic:def:2018205110000000
    V
    		CVE-2018-20511 on Ubuntu 18.04 LTS (bionic) - negligible.
    2018-12-27
    oval:com.ubuntu.trusty:def:201820511000
    V
    		CVE-2018-20511 on Ubuntu 14.04 LTS (trusty) - negligible.
    2018-12-27
    oval:com.ubuntu.xenial:def:2018205110000000
    V
    		CVE-2018-20511 on Ubuntu 16.04 LTS (xenial) - negligible.
    2018-12-27
    oval:com.ubuntu.xenial:def:201820511000
    V
    		CVE-2018-20511 on Ubuntu 16.04 LTS (xenial) - negligible.
    2018-12-27
    BACK
    linux linux kernel *
    debian debian linux 8.0
    linux linux kernel 4.18.10