Artifex Ghostscript 9.21 psi/ztoken.c igc_reloc_struct_ptr out-of-bounds

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

Summaryinfo

A vulnerability, which was classified as critical, was found in Artifex Ghostscript 9.21. This affects the function igc_reloc_struct_ptr of the file psi/ztoken.c. Executing a manipulation can lead to out-of-bounds. This vulnerability is handled as CVE-2017-11714. It is possible to launch the attack on the local host. There is not any exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Artifex Ghostscript 9.21 (Document Processing Software). It has been declared as critical. This vulnerability affects the function igc_reloc_struct_ptr of the file psi/ztoken.c. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

psi/ztoken.c in Artifex Ghostscript 9.21 mishandles references to the scanner state structure, which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted PostScript document, related to an out-of-bounds read in the igc_reloc_struct_ptr function in psi/igc.c.

The bug was discovered 07/25/2017. The weakness was released 07/28/2017 as confirmed git commit (GIT Repository). The advisory is shared for download at git.ghostscript.com. This vulnerability was named CVE-2017-11714 since 07/27/2017. The attack can be initiated remotely. No form of authentication is required for a successful 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 3 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 102096 (Debian DLA-1048-1 : 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 176166 (Debian Security Update for ghostscript (DSA 3986-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.ghostscript.com. A possible mitigation has been published 4 days after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (102096). Entries connected to this vulnerability are available at VDB-104535, VDB-104536, VDB-104540 and VDB-104541. Once again VulDB remains the best source for 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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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / 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: 102096
Nessus Name: Debian DLA-1048-1 : ghostscript security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53754
OpenVAS Name: Debian Security Advisory DSA 3986-1 (ghostscript - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: 671fd59eb657743aa86fbc1895cb15872a317caa

Timelineinfo

07/25/2017 🔍
07/27/2017 +2 days 🔍
07/28/2017 +1 days 🔍
07/28/2017 +0 days 🔍
07/28/2017 +0 days 🔍
08/01/2017 +4 days 🔍
08/02/2017 +1 days 🔍
12/14/2022 +1960 days 🔍

Sourcesinfo

Vendor: artifex.com

Advisory: git.ghostscript.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-11714 (🔍)
GCVE (CVE): GCVE-0-2017-11714
GCVE (VulDB): GCVE-100-104596

OVAL: 🔍

SecurityTracker: 1039233

See also: 🔍

Entryinfo

Created: 07/28/2017 19:58
Updated: 12/14/2022 10:42
Changes: 07/28/2017 19:58 (79), 11/02/2019 08:13 (3), 01/06/2021 16:09 (3), 12/14/2022 10:42 (3)
Complete: 🔍
Cache ID: 216::103

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