Artifex Ghostscript GhostXPS 9.22 xps/xpsfont.c xps_load_sfnt_name memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Artifex Ghostscript GhostXPS 9.22. This issue affects the function xps_load_sfnt_name of the file xps/xpsfont.c. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2017-9618. Local access is required to approach this attack. No exploit exists. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Artifex Ghostscript GhostXPS 9.22 (Document Processing Software). This issue affects the function xps_load_sfnt_name of the file xps/xpsfont.c. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The xps_load_sfnt_name function in xps/xpsfont.c in Artifex Ghostscript GhostXPS 9.22 allows remote attackers to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact via a crafted document.

The bug was discovered 07/25/2017. The weakness was disclosed 07/26/2017 as confirmed git commit (GIT Repository). The advisory is shared at git.ghostscript.com. The identification of this vulnerability is CVE-2017-9618 since 06/14/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 119132 (GLSA-201811-12 : GPL Ghostscript: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l.

Applying the patch 3c2aebbedd37fab054e80f2e315de07d7e9b5bdb is able to eliminate this problem. The bugfix is ready for download at git.ghostscript.com. A possible mitigation has been published 2 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (119132) and SecurityFocus (BID 99993†). The entries VDB-104538, VDB-104539 and VDB-104543 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 119132
Nessus Name: GLSA-201811-12 : GPL Ghostscript: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703397
OpenVAS Name: Fedora Update for ghostscript FEDORA-2017-c9b0c406b3
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: 3c2aebbedd37fab054e80f2e315de07d7e9b5bdb

Timelineinfo

06/14/2017 🔍
07/25/2017 +41 days 🔍
07/26/2017 +1 days 🔍
07/26/2017 +0 days 🔍
07/26/2017 +0 days 🔍
07/27/2017 +1 days 🔍
11/24/2018 +485 days 🔍
11/26/2018 +2 days 🔍
12/14/2022 +1479 days 🔍

Sourcesinfo

Vendor: artifex.com

Advisory: git.ghostscript.com
Researcher: Kim Gwan Yeong
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-9618 (🔍)
GCVE (CVE): GCVE-0-2017-9618
GCVE (VulDB): GCVE-100-104537
SecurityFocus: 99993 - Ghostscript GhostXPS CVE-2017-9618 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 07/27/2017 08:25
Updated: 12/14/2022 09:19
Changes: 07/27/2017 08:25 (73), 11/01/2019 15:25 (9), 01/06/2021 13:58 (2), 12/14/2022 09:19 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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