SB2017042802 - Debian update for ghostscript

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Main Vulnerability Database SB2017042802

SB2017042802 - Debian update for ghostscript

Published: April 28, 2017

Security Bulletin ID SB2017042802
Severity
Critical
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Critical 20% Medium 60% Low 20%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 secuirty vulnerabilities.


1) Division by zero (CVE-ID: CVE-2016-10219)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to divide-by-zero error within the intersect() function in base/gxfill.c in Ghostscript 9.20. A remote attacker can perform a denial of service (divide-by-zero error and application crash) via a specially crafted file.



2) NULL pointer dereference (CVE-ID: CVE-2016-10220)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference error within the gs_makewordimagedevice() function in base/gsdevmem.c. A remote attacker can create a specially crafted PDF file, pass it to the affected application, trigger NULL pointer dereference and crash the application.

3) NULL pointer dereference (CVE-ID: CVE-2017-5951)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the mem_get_bits_rectangle() function in base/gdevmem.c in Ghostscript. A remote attacker can create a specially crafted file, pass it to the affected application and crash it.

4) NULL pointer dereference (CVE-ID: CVE-2017-7207)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the mem_get_bits_rectangle() function in base/gdevmem.c in Ghostscript. A remote attacker can create a specially crafted PostScript file, pass it to the affected application and crash it.


5) Type confusion (CVE-ID: CVE-2017-8291)

The vulnerability allows a remote unauthenticated attacker to execute arbitrary commands on a targeted system.

The weakness exists due to type confusion error when processing user-supplied parameters passed to the .rsdparams and .eqproc functions in ghostscript. A remote attacker can submit a specially crafted .eps document, execute code in the context of the ghostscript process and bypass -dSAFER protection.

Successful exploitation of the vulnerability may result in system compromise.

Note: this vulnerability is being exploited in the wild.

Remediation

Install update from vendor's website.

References