SB2017050806 - OpenSUSE Linux update for ghostscript

Description

This security bulletin contains information about 5 vulnerabilities.

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

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

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.

2) Integer overflow (CVE-ID: CVE-2016-9601)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

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

The vulnerability exists due to integer overflow when processing images within jbig2dec library. A remote attacker can pass a specially crafted image file to application, using the vulnerable library, and crash it.

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

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

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)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

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)

CWE-ID: CWE-704 - Type conversion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red

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

• https://lists.opensuse.org/opensuse-security-announce/2017-05/msg00014.html