Ghostscript 9.04 PostScript Document Handling OutputFile memory corruption ⚔ [Disputed]

CVSS Meta Temp Score
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CTI Interest Score
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8.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Ghostscript 9.04. Affected by this vulnerability is an unknown functionality of the component PostScript Document Handling. The manipulation of the argument OutputFile as part of Filename String leads to memory corruption. This vulnerability is uniquely identified as CVE-2012-4875. Moreover, an exploit is present. The actual existence of this vulnerability is currently in question. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Ghostscript 9.04 (Document Processing Software) and classified as critical. This issue affects an unknown functionality of the component PostScript Document Handling. The manipulation of the argument OutputFile as part of a Filename String 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:

** DISPUTED ** Heap-based buffer overflow in gdevwpr2.c in Ghostscript 9.04, when processing the OutputFile device parameter, allows user-assisted remote attackers to execute arbitrary code via a long file name in a PostScript document. NOTE: as of 20120314, the developer was not able to reproduce the issue and disputed it.

The weakness was disclosed 03/14/2012 by Marcos H. Woehrmann (Website). It is possible to read the advisory at bugs.ghostscript.com. The public release has been coordinated in cooperation with the project team. The identification of this vulnerability is CVE-2012-4875 since 09/06/2012. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a private exploit are known.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $0-$5k. The real existence of this vulnerability is still doubted at the moment.

Upgrading to version 9.05 eliminates this vulnerability. Applying the patch 692856a.diff is able to eliminate this problem. The bugfix is ready for download at bugs.ghostscript.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (74554), SecurityFocus (BID 52864†), OSVDB (80882†) and Secunia (SA47855†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 8.7

VulDB Base Score: 10.0
VulDB Temp Score: 8.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: No
Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍

Upgrade: Ghostscript 9.05
Patch: 692856a.diff

Timelineinfo

02/14/2012 🔍
02/18/2012 +4 days 🔍
03/14/2012 +25 days 🔍
04/03/2012 +20 days 🔍
04/03/2012 +0 days 🔍
04/04/2012 +1 days 🔍
04/05/2012 +1 days 🔍
09/06/2012 +154 days 🔍
09/06/2012 +0 days 🔍
08/07/2024 +4352 days 🔍

Sourcesinfo

Advisory: bugs.ghostscript.com
Researcher: Marcos H. Woehrmann
Status: Not defined
Coordinated: 🔍
Disputed: 🔍

CVE: CVE-2012-4875 (🔍)
GCVE (CVE): GCVE-0-2012-4875
GCVE (VulDB): GCVE-100-5027
X-Force: 74554
SecurityFocus: 52864 - Ghostscript 'OutputFile' Parameter Heap Based Buffer Overflow Vulnerability
Secunia: 47855 - Ghostscript "OutputFile" Buffer Overflow Vulnerability, Highly Critical
OSVDB: 80882

Entryinfo

Created: 04/05/2012 09:49
Updated: 08/07/2024 00:20
Changes: 04/05/2012 09:49 (62), 08/26/2017 06:37 (9), 08/07/2024 00:20 (16)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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