psi/zfjbig2.c in Artifex Ghostscript before 9.26 allows remote attackers to bypass intended access restrictions because of a JBIG2Decode type confusion.

The version of ghostscript installed on the remote host is prior to 9.25-5. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1598 advisory.

  - Artifex Ghostscript before 9.25 allowed a user-writable error exception table, which could be used by     remote attackers able to supply crafted PostScript to potentially overwrite or replace error handlers to     inject code. (CVE-2018-17183)

  - Artifex Ghostscript 9.25 and earlier allows attackers to bypass a sandbox protection mechanism via vectors     involving errorhandler setup. NOTE: this issue exists because of an incomplete fix for CVE-2018-17183.
    (CVE-2018-17961)

  - Artifex Ghostscript allows attackers to bypass a sandbox protection mechanism by leveraging exposure of     system operators in the saved execution stack in an error object. (CVE-2018-18073)

  - Artifex Ghostscript 9.25 and earlier allows attackers to bypass a sandbox protection mechanism via vectors     involving the 1Policy operator. (CVE-2018-18284)

  - In Artifex Ghostscript through 9.25, the setpattern operator did not properly validate certain types. A     specially crafted PostScript document could exploit this to crash Ghostscript or, possibly, execute     arbitrary code in the context of the Ghostscript process. This is a type confusion issue because of     failure to check whether the Implementation of a pattern dictionary was a structure type. (CVE-2018-19134)

  - An issue was discovered in Artifex Ghostscript before 9.26. LockSafetyParams is not checked correctly if     another device is used. (CVE-2018-19409)

  - psi/zdevice2.c in Artifex Ghostscript before 9.26 allows remote attackers to bypass intended access     restrictions because available stack space is not checked when the device remains the same.
    (CVE-2018-19475)

  - psi/zicc.c in Artifex Ghostscript before 9.26 allows remote attackers to bypass intended access     restrictions because of a setcolorspace type confusion. (CVE-2018-19476)

  - psi/zfjbig2.c in Artifex Ghostscript before 9.26 allows remote attackers to bypass intended access     restrictions because of a JBIG2Decode type confusion. (CVE-2018-19477)

  - A flaw was found in, ghostscript versions prior to 9.50, in the .pdf_hook_DSC_Creator procedure where it     did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A     specially crafted PostScript file could disable security protection and then have access to the file     system, or execute arbitrary commands. (CVE-2019-14811)

  - A flaw was found in all ghostscript versions 9.x before 9.50, in the .setuserparams2 procedure where it     did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A     specially crafted PostScript file could disable security protection and then have access to the file     system, or execute arbitrary commands. (CVE-2019-14812)

  - A flaw was found in ghostscript, versions 9.x before 9.50, in the setsystemparams procedure where it did     not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially     crafted PostScript file could disable security protection and then have access to the file system, or     execute arbitrary commands. (CVE-2019-14813)

  - A flaw was found in, ghostscript versions prior to 9.50, in the .pdfexectoken and other procedures where     it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A     specially crafted PostScript file could disable security protection and then have access to the file     system, or execute arbitrary commands. (CVE-2019-14817)

  - A flaw was found in all versions of ghostscript 9.x before 9.50, where the `.charkeys` procedure, where it     did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. An     attacker could abuse this flaw by creating a specially crafted PostScript file that could escalate     privileges within the Ghostscript and access files outside of restricted areas or execute commands.
    (CVE-2019-14869)

  - It was found that the superexec operator was available in the internal dictionary in ghostscript before     9.27. A specially crafted PostScript file could use this flaw in order to, for example, have access to the     file system outside of the constrains imposed by -dSAFER. (CVE-2019-3835)

  - It was found that the forceput operator could be extracted from the DefineResource method in ghostscript     before 9.27. A specially crafted PostScript file could use this flaw in order to, for example, have access     to the file system outside of the constrains imposed by -dSAFER. (CVE-2019-3838)

  - It was found that in ghostscript some privileged operators remained accessible from various places after     the CVE-2019-6116 fix. A specially crafted PostScript file could use this flaw in order to, for example,     have access to the file system outside of the constrains imposed by -dSAFER. Ghostscript versions before     9.27 are vulnerable. (CVE-2019-3839)

  - In Artifex Ghostscript through 9.26, ephemeral or transient procedures can allow access to system     operators, leading to remote code execution. (CVE-2019-6116)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has ghostscript packages installed that are affected by multiple vulnerabilities:

  - It was discovered that the ghostscript PDF14 compositor     did not properly handle the copying of a device. An     attacker could possibly exploit this to bypass the
    -dSAFER protection and crash ghostscript or, possibly,     execute arbitrary code in the ghostscript context via a     specially crafted PostScript document. (CVE-2018-16540)

  - psi/zdevice2.c in Artifex Ghostscript before 9.26 allows     remote attackers to bypass intended access restrictions     because available stack space is not checked when the     device remains the same. (CVE-2018-19475)

  - psi/zicc.c in Artifex Ghostscript before 9.26 allows     remote attackers to bypass intended access restrictions     because of a setcolorspace type confusion.
    (CVE-2018-19476)

  - psi/zfjbig2.c in Artifex Ghostscript before 9.26 allows     remote attackers to bypass intended access restrictions     because of a JBIG2Decode type confusion.
    (CVE-2018-19477)

  - It was found that ghostscript could leak sensitive     operators on the operand stack when a pseudo-operator     pushes a subroutine. A specially crafted PostScript file     could use this flaw to escape the -dSAFER protection in     order to, for example, have access to the file system     outside of the SAFER constraints. (CVE-2019-6116)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

According to the versions of the ghostscript package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - psi/zdevice2.c in Artifex Ghostscript before 9.26     allows remote attackers to bypass intended access     restrictions because available stack space is not     checked when the device remains the     same.i1/4^CVE-2018-19475i1/4%0

  - psi/zicc.c in Artifex Ghostscript before 9.26 allows     remote attackers to bypass intended access restrictions     because of a setcolorspace type     confusion.i1/4^CVE-2018-19476i1/4%0

  - psi/zfjbig2.c in Artifex Ghostscript before 9.26 allows     remote attackers to bypass intended access restrictions     because of a JBIG2Decode type     confusion.i1/4^CVE-2018-19477i1/4%0

  - It was found that ghostscript could leak sensitive     operators on the operand stack when a pseudo-operator     pushes a subroutine. A specially crafted PostScript     file could use this flaw to escape the -dSAFER     protection in order to, for example, have access to the     file system outside of the SAFER     constraints.i1/4^CVE-2019-6116i1/4%0

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the ghostscript packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - ghostscript: access bypass in psi/zdevice2.c (700153)     (CVE-2018-19475)

  - ghostscript: access bypass in psi/zicc.c (700169)     (CVE-2018-19476)

  - ghostscript: access bypass in psi/zfjbig2.c (700168)     (CVE-2018-19477)

  - ghostscript: subroutines within pseudo-operators must     themselves be pseudo-operators (700317) (CVE-2019-6116)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for ghostscript to version 9.26 fixes the following issues :

Security issues fixed :

  - CVE-2018-19475: Fixed bypass of an intended access     restriction in psi/zdevice2.c (bsc#1117327)

  - CVE-2018-19476: Fixed bypass of an intended access     restriction in psi/zicc.c (bsc#1117313)

  - CVE-2018-19477: Fixed bypass of an intended access     restriction in psi/zfjbig2.c (bsc#1117274)

  - CVE-2018-19409: Check if another device is used     correctly in LockSafetyParams (bsc#1117022)

  - CVE-2018-18284: Fixed potential sandbox escape through     1Policy operator (bsc#1112229)

  - CVE-2018-18073: Fixed leaks through operator in saved     execution stacks (bsc#1111480)

  - CVE-2018-17961: Fixed a -dSAFER sandbox escape by     bypassing executeonly (bsc#1111479)

  - CVE-2018-17183: Fixed a potential code injection by     specially crafted PostScript files (bsc#1109105)

Version update to 9.26 (bsc#1117331) :

  - Security issues have been the primary focus

  - Minor bug fixes and improvements

  - For release summary see:
    http://www.ghostscript.com/doc/9.26/News.htm

This update was imported from the SUSE:SLE-15:Update update project.

- rebase to latest upstream version 9.26

  - Security fix for CVE-2018-19478 CVE-2018-19134     CVE-2018-19477 CVE-2018-19476 CVE-2018-19475     CVE-2018-19409 CVE-2018-18284 CVE-2018-18073     CVE-2018-17961

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update for ghostscript is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The Ghostscript suite contains utilities for rendering PostScript and PDF documents. Ghostscript translates PostScript code to common bitmap formats so that the code can be displayed or printed.

Security Fix(es) :

* ghostscript: use-after-free in copydevice handling (699661) (CVE-2018-16540)

* ghostscript: access bypass in psi/zdevice2.c (700153) (CVE-2018-19475)

* ghostscript: access bypass in psi/zicc.c (700169) (CVE-2018-19476)

* ghostscript: access bypass in psi/zfjbig2.c (700168) (CVE-2018-19477)

* ghostscript: subroutines within pseudo-operators must themselves be pseudo-operators (700317) (CVE-2019-6116)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Red Hat would like to thank Tavis Ormandy (Google Project Zero) for reporting CVE-2019-6116.

Bug Fix(es) :

* Previously, ghostscript-9.07-31.el7_6.1 introduced a regression during the standard input reading, causing a '/invalidfileaccess in
--run--' error. With this update, the regression has been fixed and the described error no longer occurs. (BZ#1665919)

Security Fix(es) :

  - ghostscript: use-after-free in copydevice handling     (699661) (CVE-2018-16540)

  - ghostscript: access bypass in psi/zdevice2.c (700153)     (CVE-2018-19475)

  - ghostscript: access bypass in psi/zicc.c (700169)     (CVE-2018-19476)

  - ghostscript: access bypass in psi/zfjbig2.c (700168)     (CVE-2018-19477)

  - ghostscript: subroutines within pseudo-operators must     themselves be pseudo-operators (700317) (CVE-2019-6116)

Bug Fix(es) :

  - Previously, ghostscript-9.07-31.el7_6.1 introduced a     regression during the standard input reading, causing a     '/invalidfileaccess in --run--' error. With this update,     the regression has been fixed and the described error no     longer occurs.

From Red Hat Security Advisory 2019:0229 :

An update for ghostscript is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The Ghostscript suite contains utilities for rendering PostScript and PDF documents. Ghostscript translates PostScript code to common bitmap formats so that the code can be displayed or printed.

Security Fix(es) :

* ghostscript: use-after-free in copydevice handling (699661) (CVE-2018-16540)

* ghostscript: access bypass in psi/zdevice2.c (700153) (CVE-2018-19475)

* ghostscript: access bypass in psi/zicc.c (700169) (CVE-2018-19476)

* ghostscript: access bypass in psi/zfjbig2.c (700168) (CVE-2018-19477)

* ghostscript: subroutines within pseudo-operators must themselves be pseudo-operators (700317) (CVE-2019-6116)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Red Hat would like to thank Tavis Ormandy (Google Project Zero) for reporting CVE-2019-6116.

Bug Fix(es) :

* Previously, ghostscript-9.07-31.el7_6.1 introduced a regression during the standard input reading, causing a '/invalidfileaccess in
--run--' error. With this update, the regression has been fixed and the described error no longer occurs. (BZ#1665919)

This update for ghostscript to version 9.26 fixes the following issues :

Security issues fixed :

CVE-2018-19475: Fixed bypass of an intended access restriction in psi/zdevice2.c (bsc#1117327)

CVE-2018-19476: Fixed bypass of an intended access restriction in psi/zicc.c (bsc#1117313)

CVE-2018-19477: Fixed bypass of an intended access restriction in psi/zfjbig2.c (bsc#1117274)

CVE-2018-19409: Check if another device is used correctly in LockSafetyParams (bsc#1117022)

CVE-2018-18284: Fixed potential sandbox escape through 1Policy operator (bsc#1112229)

CVE-2018-18073: Fixed leaks through operator in saved execution stacks (bsc#1111480)

CVE-2018-17961: Fixed a -dSAFER sandbox escape by bypassing executeonly (bsc#1111479)

CVE-2018-17183: Fixed a potential code injection by specially crafted PostScript files (bsc#1109105)

Version update to 9.26 (bsc#1117331): Security issues have been the primary focus

Minor bug fixes and improvements

For release summary see: http://www.ghostscript.com/doc/9.26/News.htm

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for ghostscript to version 9.26 fixes the following issues :

Security issues fixed :

  - CVE-2018-19475: Fixed bypass of an intended access     restriction in psi/zdevice2.c (bsc#1117327)

  - CVE-2018-19476: Fixed bypass of an intended access     restriction in psi/zicc.c (bsc#1117313)

  - CVE-2018-19477: Fixed bypass of an intended access     restriction in psi/zfjbig2.c (bsc#1117274)

  - CVE-2018-19409: Check if another device is used     correctly in LockSafetyParams (bsc#1117022)

  - CVE-2018-18284: Fixed potential sandbox escape through     1Policy operator (bsc#1112229)

  - CVE-2018-18073: Fixed leaks through operator in saved     execution stacks (bsc#1111480)

  - CVE-2018-17961: Fixed a -dSAFER sandbox escape by     bypassing executeonly (bsc#1111479)

  - CVE-2018-17183: Fixed a potential code injection by     specially crafted PostScript files (bsc#1109105)

Version update to 9.26 (bsc#1117331) :

  - Security issues have been the primary focus

  - Minor bug fixes and improvements

  - For release summary see:
    http://www.ghostscript.com/doc/9.26/News.htm

This update was imported from the SUSE:SLE-12:Update update project.

It was discovered that Ghostscript contained multiple security issues.
If a user or automated system were tricked into processing a specially crafted file, a remote attacker could possibly use these issues to access arbitrary files, execute arbitrary code, or cause a denial of service.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Several vulnerabilities were discovered in Ghostscript, the GPL PostScript/PDF interpreter, which may result in denial of service or the execution of arbitrary code if a malformed Postscript file is processed (despite the -dSAFER sandbox being enabled).

This update rebases ghostscript for stretch to the upstream version 9.26 which includes additional changes.

Several security vulnerabilities were discovered in Ghostscript, an interpreter for the PostScript language, which could result in denial of service, the creation of files or the execution of arbitrary code if a malformed Postscript file is processed (despite the dSAFER sandbox being enabled).

For Debian 8 'Jessie', these problems have been fixed in version 9.06~dfsg-2+deb8u12.

We recommend that you upgrade your ghostscript packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The version of Artifex Ghostscript installed on the remote Windows host is prior to 9.26. It is, therefore, affected by multiple vulnerabilities.

ID	Name	Product	Family	Severity
146633	Amazon Linux 2 : ghostscript (ALAS-2021-1598)	Nessus	Amazon Linux Local Security Checks	critical
127241	NewStart CGSL CORE 5.04 / MAIN 5.04 : ghostscript Multiple Vulnerabilities (NS-SA-2019-0054)	Nessus	NewStart CGSL Local Security Checks	high
123722	EulerOS Virtualization 2.5.3 : ghostscript (EulerOS-SA-2019-1254)	Nessus	Huawei Local Security Checks	high
123584	EulerOS 2.0 SP2 : ghostscript (EulerOS-SA-2019-1110)	Nessus	Huawei Local Security Checks	high
123151	openSUSE Security Update : ghostscript (openSUSE-2019-1007)	Nessus	SuSE Local Security Checks	critical
123105	EulerOS 2.0 SP3 : ghostscript (EulerOS-SA-2019-1092)	Nessus	Huawei Local Security Checks	high
122688	EulerOS 2.0 SP5 : ghostscript (EulerOS-SA-2019-1065)	Nessus	Huawei Local Security Checks	high
122284	Fedora 28 : ghostscript (2019-82acb29c1b)	Nessus	Fedora Local Security Checks	critical
122103	Fedora 29 : ghostscript (2019-077a3f23c0)	Nessus	Fedora Local Security Checks	critical
122061	CentOS 7 : ghostscript (CESA-2019:0229)	Nessus	CentOS Local Security Checks	high
121532	Scientific Linux Security Update : ghostscript on SL7.x x86_64 (20190131)	Nessus	Scientific Linux Local Security Checks	high
121527	RHEL 7 : ghostscript (RHSA-2019:0229)	Nessus	Red Hat Local Security Checks	high
121523	Oracle Linux 7 : ghostscript (ELSA-2019-0229)	Nessus	Oracle Linux Local Security Checks	high
120186	SUSE SLED15 / SLES15 Security Update : ghostscript (SUSE-SU-2018:4087-1)	Nessus	SuSE Local Security Checks	critical
119713	openSUSE Security Update : ghostscript (openSUSE-2018-1556)	Nessus	SuSE Local Security Checks	critical
119711	openSUSE Security Update : ghostscript (openSUSE-2018-1552)	Nessus	SuSE Local Security Checks	critical
119651	SUSE SLED12 / SLES12 Security Update : ghostscript (SUSE-SU-2018:4090-1)	Nessus	SuSE Local Security Checks	critical
119301	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : Ghostscript vulnerabilities (USN-3831-1)	Nessus	Ubuntu Local Security Checks	critical
119269	Debian DSA-4346-1 : ghostscript - security update	Nessus	Debian Local Security Checks	critical
119267	Debian DLA-1598-1 : ghostscript security update	Nessus	Debian Local Security Checks	critical
119240	Artifex Ghostscript < 9.26 PostScript Multiple Vulnerabilities	Nessus	Windows	critical

Detections

Analytics

CVE-2018-19477

high

Tenable Plugins

critical

high

high

high

critical

high

high

critical

critical

high

high

high

high

critical

critical

critical

critical

critical

critical

critical

critical