Vulnerability CVE-2018-19478

Vulnerability Name:

CVE-2018-19478 (CCN-155085)

Assigned:

2018-11-20

Published:

2018-11-20

Updated:

2019-01-11

Summary:

In Artifex Ghostscript before 9.26, a carefully crafted PDF file can trigger an extremely long running computation when parsing the file.

CVSS v3 Severity:

5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/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): 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): 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-20

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2018-19478

Source: CCN
Type: Ghostscript GIT Repository
PDF interpreter - limit page tree recusrsion checking

Source: CONFIRM
Type: Patch, Third Party Advisory
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=0a7e5a1c309fa0911b892fa40996a7d55d90bace

Source: BID
Type: Third Party Advisory, VDB Entry
106445

Source: CONFIRM
Type: Issue Tracking, Permissions Required, Third Party Advisory
https://bugs.ghostscript.com/show_bug.cgi?id=699856

Source: CCN
Type: Red Hat Bugzilla Bug 1655607
(CVE-2018-19478) - CVE-2018-19478 ghostscript: Attempting to open a carefully crafted PDF file results in long-running computation

Source: CONFIRM
Type: Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1655607

Source: XF
Type: UNKNOWN
ghostscript-cve201819478-dos(155085)

Source: MLIST
Type: Third Party Advisory
[debian-lts-announce] 20181227 [SECURITY] [DLA 1620-1] ghostscript security update

Source: CCN
Type: Ghostscript Web site
Version 9.26 (2018-11-20)

Source: CONFIRM
Type: Release Notes
https://www.ghostscript.com/doc/9.26/History9.htm

Vulnerable Configuration:

Configuration 1:

cpe:/a:artifex:ghostscript:*:*:*:*:*:*:*:* (Version < 9.26)

Configuration 2:

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

Configuration CCN 1:

cpe:/a:artifex:ghostscript:9.21:*:*:*:*:*:*:*

OR cpe:/a:artifex:ghostscript:9.20:*:*:*:*:*:*:*

OR cpe:/a:artifex:ghostscript:9.22:*:*:*:*:*:*:*

OR cpe:/a:artifex:ghostscript:9.23:*:*:*:*:*:*:*

OR cpe:/a:artifex:ghostscript:9.25:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.bionic:def:201819478000	V	CVE-2018-19478 on Ubuntu 18.04 LTS (bionic) - medium.	2019-01-02
oval:com.ubuntu.cosmic:def:2018194780000000	V	CVE-2018-19478 on Ubuntu 18.10 (cosmic) - medium.	2019-01-02
oval:com.ubuntu.cosmic:def:201819478000	V	CVE-2018-19478 on Ubuntu 18.10 (cosmic) - medium.	2019-01-02
oval:com.ubuntu.bionic:def:2018194780000000	V	CVE-2018-19478 on Ubuntu 18.04 LTS (bionic) - medium.	2019-01-02
oval:com.ubuntu.trusty:def:201819478000	V	CVE-2018-19478 on Ubuntu 14.04 LTS (trusty) - medium.	2019-01-02
oval:com.ubuntu.xenial:def:2018194780000000	V	CVE-2018-19478 on Ubuntu 16.04 LTS (xenial) - medium.	2019-01-02
oval:com.ubuntu.xenial:def:201819478000	V	CVE-2018-19478 on Ubuntu 16.04 LTS (xenial) - medium.	2019-01-02

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