Huawei EulerOS: Security Advisory for ghostscript (EulerOS-SA-2019-1016)

Published: 2020-01-23 11:27:23
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:M/Au:N/C:C/I:C/A:C

Summary:
The remote host is missing an update for the Huawei EulerOS 'ghostscript' Linux Distribution Package(s) announced via the EulerOS-SA-2019-1016 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
It was discovered that the ghostscript .tempfile function did not properly handle file permissions. An attacker could possibly exploit this to exploit this to bypass the -dSAFER protection and delete files or disclose their content via a specially crafted PostScript document.CVE-2018-15908 It was discovered that the ghostscript .shfill operator did not properly validate certain types. 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-2018-15909 It was discovered that ghostscript did not properly verify the key used in aesdecode. 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-2018-15911 It was discovered that the ghostscript .type operator did not properly validate its operands. A specially crafted PostScript document could exploit this to crash ghostscript or, possibly, execute arbitrary code in the context of the ghostscript process.CVE-2018-16511 It was discovered that the ghostscript did not properly restrict access to files open prior to enabling the -dSAFER mode. An attacker could possibly exploit this to bypass the -dSAFER protection and disclose the content of affected files via a specially crafted PostScript document.CVE-2018-16539 It was discovered that the ghostscript device cleanup did not properly handle devices replaced with a null 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-2018-16541 An issue was discovered in Artifex Ghostscript before 9.25. Incorrect 'restoration of privilege' checking when running out of stack during exception handling could be used by attackers able to supply crafted PostScript to execute code using the 'pipe' instruction. This is due to an incomplete fix for CVE-2018-16509.CVE-2018-16802 It was found that RHSA-2018:2918 did not fully fix CVE-2018-16509. An attacker could possibly exploit another variant of the flaw and bypass the -dSAFER protection to, for example, execute arbitrary shell commands via a specially crafted PostScript document.CVE-2018-16863 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 han ... Description truncated. Please see the references for more information.

Affected Versions:
'ghostscript' Linux Distribution Package(s) on Huawei EulerOS Virtualization 2.5.1.

Recommendations:
Please install the updated Linux Distribution Package(s).

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2018-15908
https://nvd.nist.gov/vuln/detail/CVE-2018-15909
https://nvd.nist.gov/vuln/detail/CVE-2018-15910
https://nvd.nist.gov/vuln/detail/CVE-2018-15911
https://nvd.nist.gov/vuln/detail/CVE-2018-16509
https://nvd.nist.gov/vuln/detail/CVE-2018-16511
https://nvd.nist.gov/vuln/detail/CVE-2018-16539
https://nvd.nist.gov/vuln/detail/CVE-2018-16541
https://nvd.nist.gov/vuln/detail/CVE-2018-16542
https://nvd.nist.gov/vuln/detail/CVE-2018-16802
https://nvd.nist.gov/vuln/detail/CVE-2018-16863
https://nvd.nist.gov/vuln/detail/CVE-2018-17183
https://nvd.nist.gov/vuln/detail/CVE-2018-17961
https://nvd.nist.gov/vuln/detail/CVE-2018-18073
https://nvd.nist.gov/vuln/detail/CVE-2018-18284
https://nvd.nist.gov/vuln/detail/CVE-2018-19134
https://nvd.nist.gov/vuln/detail/CVE-2018-19409

References:

https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2019-1016

Severity
High
CVSS Score
9.3
Published
2020-01-23
Modified
2020-01-23
Category
Huawei EulerOS Local Security Checks

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