Vulnerability CVE-2018-18398

Vulnerability Name:

CVE-2018-18398 (CCN-151845)

Assigned:

2018-10-18

Published:

2018-10-18

Updated:

2018-12-21

Summary:

Xfce Thunar 1.6.15, when Xfce 4.12 is used, mishandles the IBus-Unikey input method for file searches within File Manager, leading to an out-of-bounds read and SEGV. This could potentially be exploited by an arbitrary local user who creates files in /tmp before the victim uses this input method.

CVSS v3 Severity:

4.7 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)
4.2 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): High Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

3.3 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)
2.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:U/RC:R)

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): None Availibility (A): Low

CVSS v2 Severity:

1.9 Low (CVSS v2 Vector: AV:L/AC:M/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

Vulnerability Type:

CWE-125

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2018-18398

Source: CCN
Type: 0xd0ff9 Web page
CVE-2018-18398

Source: MISC
Type: Exploit, Third Party Advisory
https://0xd0ff9.wordpress.com/2018/10/18/cve-2018-18398/

Source: XF
Type: UNKNOWN
xfce-thunar-cve201818398-dos(151845)

Source: CCN
Type: thunar GIT Repository
thunar

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2018-18398

Vulnerable Configuration:

Configuration 1:

cpe:/a:xfce:thunar:*:*:*:*:*:*:*:* (Version < 1.6.15)

Configuration 2:

cpe:/a:xfce:xfce:*:*:*:*:*:*:*:* (Version < 4.12)

Configuration CCN 1:

cpe:/a:xfce:thunar:1.6.15:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.disco:def:2018183980000000	V	CVE-2018-18398 on Ubuntu 19.04 (disco) - medium.	2018-10-19
oval:com.ubuntu.bionic:def:201818398000	V	CVE-2018-18398 on Ubuntu 18.04 LTS (bionic) - medium.	2018-10-19
oval:com.ubuntu.cosmic:def:2018183980000000	V	CVE-2018-18398 on Ubuntu 18.10 (cosmic) - medium.	2018-10-19
oval:com.ubuntu.cosmic:def:201818398000	V	CVE-2018-18398 on Ubuntu 18.10 (cosmic) - medium.	2018-10-19
oval:com.ubuntu.bionic:def:2018183980000000	V	CVE-2018-18398 on Ubuntu 18.04 LTS (bionic) - medium.	2018-10-19
oval:com.ubuntu.trusty:def:201818398000	V	CVE-2018-18398 on Ubuntu 14.04 LTS (trusty) - medium.	2018-10-19
oval:com.ubuntu.xenial:def:2018183980000000	V	CVE-2018-18398 on Ubuntu 16.04 LTS (xenial) - medium.	2018-10-19
oval:com.ubuntu.xenial:def:201818398000	V	CVE-2018-18398 on Ubuntu 16.04 LTS (xenial) - medium.	2018-10-19

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