Vulnerability CVE-2018-20431

Vulnerability Name:

CVE-2018-20431 (CCN-154679)

Assigned:

2018-12-20

Published:

2018-12-20

Updated:

2019-01-10

Summary:

GNU Libextractor through 1.8 has a NULL Pointer Dereference vulnerability in the function process_metadata() in plugins/ole2_extractor.c.

CVSS v3 Severity:

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

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): Required
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:N/UI:R/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:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)

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

CVSS v2 Severity:

4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network 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-476

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2018-20431

Source: BID
Type: Third Party Advisory, VDB Entry
106300

Source: XF
Type: UNKNOWN
gnulibextractor-cve201820431-dos(154679)

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://gnunet.org/bugs/view.php?id=5494

Source: CCN
Type: libextractor GIT Repository
fix #5494

Source: MISC
Type: Patch, Third Party Advisory
https://gnunet.org/git/libextractor.git/commit/?id=489c4a540bb2c4744471441425b8932b97a153e7

Source: MISC
Type: Third Party Advisory
https://gnunet.org/git/libextractor.git/tree/ChangeLog

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20181224 [SECURITY] [DLA 1616-1] libextractor security update

Source: DEBIAN
Type: Third Party Advisory
DSA-4361

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2018-20431

Vulnerable Configuration:

Configuration 1:

cpe:/a:gnu:libextractor:*:*:*:*:*:*:*:* (Version <= 1.8)

Configuration 2:

cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*

OR cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:gnu:libextractor:1.8:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.disco:def:2018204310000000	V	CVE-2018-20431 on Ubuntu 19.04 (disco) - medium.	2018-12-24
oval:com.ubuntu.bionic:def:201820431000	V	CVE-2018-20431 on Ubuntu 18.04 LTS (bionic) - untriaged.	2018-12-24
oval:com.ubuntu.cosmic:def:2018204310000000	V	CVE-2018-20431 on Ubuntu 18.10 (cosmic) - untriaged.	2018-12-24
oval:com.ubuntu.cosmic:def:201820431000	V	CVE-2018-20431 on Ubuntu 18.10 (cosmic) - untriaged.	2018-12-24
oval:com.ubuntu.bionic:def:2018204310000000	V	CVE-2018-20431 on Ubuntu 18.04 LTS (bionic) - medium.	2018-12-24
oval:com.ubuntu.trusty:def:201820431000	V	CVE-2018-20431 on Ubuntu 14.04 LTS (trusty) - untriaged.	2018-12-24
oval:com.ubuntu.xenial:def:2018204310000000	V	CVE-2018-20431 on Ubuntu 16.04 LTS (xenial) - medium.	2018-12-24
oval:com.ubuntu.xenial:def:201820431000	V	CVE-2018-20431 on Ubuntu 16.04 LTS (xenial) - untriaged.	2018-12-24

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