CVE-2016-7977

ghostscript: .libfile does not honor -dSAFER

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Ghostscript before 9.21 might allow remote attackers to bypass the SAFER mode protection mechanism and consequently read arbitrary files via the use of the .libfile operator in a crafted postscript document.

Ghostscript anterior a la versión 9.21 podría permitir que los atacantes remotos eludieran el mecanismo de protección del modo SAFER y, en consecuencia, leyeran archivos arbitrarios mediante el uso del operador .libfile en un documento Postscript manipulado.

It was found that ghostscript function .libfile did not honor the -dSAFER option, usually used when processing untrusted documents, leading to information disclosure. A specially crafted postscript document could, in the context of the gs process, retrieve file content on the target machine.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-09-09 CVE Reserved
2016-12-02 CVE Published
2023-10-07 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

References (13)

URL	Tag	Source
http://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=8abd22010eb4db0fb1b10e430d5f5d83e015ef70	X_refsource_confirm
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html	X_refsource_confirm
http://www.securityfocus.com/bid/95334	Third Party Advisory
https://ghostscript.com/doc/9.21/History9.htm	Release Notes

URL	Date	SRC

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2016/09/29/28	2023-11-07
http://www.openwall.com/lists/oss-security/2016/10/05/15	2023-11-07
https://bugs.ghostscript.com/show_bug.cgi?id=697169	2023-11-07

URL	Date	SRC
http://rhn.redhat.com/errata/RHSA-2017-0013.html	2023-11-07
http://rhn.redhat.com/errata/RHSA-2017-0014.html	2023-11-07
http://www.debian.org/security/2016/dsa-3691	2023-11-07
https://security.gentoo.org/glsa/201702-31	2023-11-07
https://access.redhat.com/security/cve/CVE-2016-7977	2017-01-04
https://bugzilla.redhat.com/show_bug.cgi?id=1380415	2017-01-04

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Artifex Search vendor "Artifex"		Ghostscript Search vendor "Artifex" for product "Ghostscript"				<= 9.20 Search vendor "Artifex" for product "Ghostscript" and version " <= 9.20"		-		Affected