Artifex Ghostscript 9.20 base/gdevmem.c mem_get_bits_rectangle null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Artifex Ghostscript 9.20. The affected element is the function mem_get_bits_rectangle of the file base/gdevmem.c. Such manipulation leads to null pointer dereference. This vulnerability is listed as CVE-2017-5951. The attack must be carried out locally. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Artifex Ghostscript 9.20 (Document Processing Software) and classified as problematic. Affected by this issue is the function mem_get_bits_rectangle of the file base/gdevmem.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. CVE summarizes:

The mem_get_bits_rectangle function in base/gdevmem.c in Artifex Software, Inc. Ghostscript 9.20 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted file.

The bug was discovered 02/03/2017. The weakness was presented 04/03/2017 (Website). The advisory is shared for download at bugs.ghostscript.com. This vulnerability is handled as CVE-2017-5951 since 02/09/2017. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 59 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 99544 (Debian DLA-905-1 : ghostscript security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277699 (Fedora Security Update for ghostscript (FEDORA-2017-a606d224a5)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (99544) and SecurityFocus (BID 98665†). See VDB-99231, VDB-99232, VDB-99233 and VDB-99234 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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: 99544
Nessus Name: Debian DLA-905-1 : ghostscript security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703838
OpenVAS Name: Debian Security Advisory DSA 3838-1 (ghostscript - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
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Timelineinfo

02/03/2017 🔍
02/09/2017 +6 days 🔍
03/04/2017 +23 days 🔍
04/03/2017 +30 days 🔍
04/03/2017 +0 days 🔍
04/03/2017 +0 days 🔍
04/20/2017 +17 days 🔍
04/21/2017 +1 days 🔍
08/25/2020 +1222 days 🔍

Sourcesinfo

Vendor: artifex.com

Advisory: bugs.ghostscript.com
Status: Confirmed

CVE: CVE-2017-5951 (🔍)
GCVE (CVE): GCVE-0-2017-5951
GCVE (VulDB): GCVE-100-99248

OVAL: 🔍

SecurityFocus: 98665 - Ghostscript CVE-2017-5951 Denial of Service Vulnerability
OSVDB: - CVE-2017-5951 - Artifex - Ghostscript - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 04/03/2017 16:59
Updated: 08/25/2020 12:38
Changes: 04/03/2017 16:59 (77), 08/25/2020 12:38 (6)
Complete: 🔍
Cache ID: 216::103

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