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.

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3831-1 advisory.

    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.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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

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.

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.

- 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.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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)

Note that Nessus relies on the presence of the package as reported by the vendor.

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.

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.

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

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.

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.

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.

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 forCVE-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 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 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 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 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 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.  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. 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 some privileged operators remained accessible from various places after     theCVE-2019-6116fix. 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-2019-3839)

    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)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
119269	Debian DSA-4346-1 : ghostscript - security update	Nessus	Debian Local Security Checks	2018/11/29	2024/7/18	critical
119301	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : Ghostscript vulnerabilities (USN-3831-1)	Nessus	Ubuntu Local Security Checks	2018/11/30	2024/8/27	critical
120186	SUSE SLED15 / SLES15 Security Update : ghostscript (SUSE-SU-2018:4087-1)	Nessus	SuSE Local Security Checks	2019/1/2	2024/7/9	critical
121532	Scientific Linux Security Update : ghostscript on SL7.x x86_64 (20190131)	Nessus	Scientific Linux Local Security Checks	2019/2/1	2024/6/25	high
122103	Fedora 29 : ghostscript (2019-077a3f23c0)	Nessus	Fedora Local Security Checks	2019/2/12	2024/6/20	critical
122284	Fedora 28 : ghostscript (2019-82acb29c1b)	Nessus	Fedora Local Security Checks	2019/2/19	2024/6/20	critical
222049	Linux Distros Unpatched Vulnerability : CVE-2018-19477	Nessus	Misc.	2025/3/4	2025/9/2	high
123105	EulerOS 2.0 SP3 : ghostscript (EulerOS-SA-2019-1092)	Nessus	Huawei Local Security Checks	2019/3/26	2024/6/12	high
123722	EulerOS Virtualization 2.5.3 : ghostscript (EulerOS-SA-2019-1254)	Nessus	Huawei Local Security Checks	2019/4/4	2024/6/5	high
119240	Artifex Ghostscript < 9.26 PostScript Multiple Vulnerabilities	Nessus	Windows	2018/11/28	2024/7/18	critical
119267	Debian DLA-1598-1 : ghostscript security update	Nessus	Debian Local Security Checks	2018/11/29	2024/7/18	critical
119651	SUSE SLED12 / SLES12 Security Update : ghostscript (SUSE-SU-2018:4090-1)	Nessus	SuSE Local Security Checks	2018/12/13	2024/7/16	critical
119713	openSUSE Security Update : ghostscript (openSUSE-2018-1556)	Nessus	SuSE Local Security Checks	2018/12/17	2024/7/15	critical
122688	EulerOS 2.0 SP5 : ghostscript (EulerOS-SA-2019-1065)	Nessus	Huawei Local Security Checks	2019/3/8	2024/6/14	high
123151	openSUSE Security Update : ghostscript (openSUSE-2019-1007)	Nessus	SuSE Local Security Checks	2019/3/27	2024/6/12	critical
146633	Amazon Linux 2 : ghostscript (ALAS-2021-1598)	Nessus	Amazon Linux Local Security Checks	2021/2/19	2024/12/11	critical
123584	EulerOS 2.0 SP2 : ghostscript (EulerOS-SA-2019-1110)	Nessus	Huawei Local Security Checks	2019/4/2	2024/6/6	high

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