VDB-120075 · CVE-2018-12932 · GCVE-0-2018-12932

Wine 3.7 enhmetafile.c PlayEnhMetaFileRecord pAlphaBlend->cbBitsSrc memory corruption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.5	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in Wine 3.7. Affected is the function PlayEnhMetaFileRecord of the file enhmetafile.c. Performing a manipulation of the argument pAlphaBlend->cbBitsSrc results in memory corruption. This vulnerability is known as CVE-2018-12932. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Wine 3.7. It has been classified as critical. This affects the function PlayEnhMetaFileRecord of the file enhmetafile.c. The manipulation of the argument pAlphaBlend->cbBitsSrc with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

PlayEnhMetaFileRecord in enhmetafile.c in Wine 3.7 allows attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact by triggering a large pAlphaBlend->cbBitsSrc value.

The bug was discovered 04/17/2018. The weakness was published 06/28/2018 (Website). It is possible to read the advisory at bugs.launchpad.net. This vulnerability is uniquely identified as CVE-2018-12932 since 06/28/2018. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 72 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entry is available at VDB-120076. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Wine

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: source.winehq.org

Timelineinfo

04/17/2018 🔍
06/28/2018 +71 days 🔍
06/28/2018 +0 days 🔍
06/28/2018 +0 days 🔍
06/29/2018 +1 days 🔍
03/29/2023 +1734 days 🔍

Sourcesinfo

Advisory: 8d2676fd14f130f9e8f06744743423168bf8d18d
Status: Not defined

CVE: CVE-2018-12932 (🔍)
GCVE (CVE): GCVE-0-2018-12932
GCVE (VulDB): GCVE-100-120075
See also: 🔍

Entryinfo

Created: 06/29/2018 08:54
Updated: 03/29/2023 12:13
Changes: 06/29/2018 08:54 (58), 02/23/2020 09:05 (1), 03/29/2023 12:13 (4)
Complete: 🔍
Cache ID: 216::103

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