Adobe Acrobat Reader XFA Engine PDF Document use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Adobe Acrobat Reader up to 2015.006.30394/2017.011.30070/2018.009.20050. This impacts an unknown function of the component XFA Engine. Performing a manipulation as part of PDF Document results in use after free. This vulnerability is cataloged as CVE-2018-4888. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Adobe Acrobat Reader up to 2015.006.30394/2017.011.30070/2018.009.20050 (Document Reader Software). This affects an unknown code of the component XFA Engine. The manipulation as part of a PDF Document leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in Adobe Acrobat Reader 2018.009.20050 and earlier versions, 2017.011.30070 and earlier versions, 2015.006.30394 and earlier versions. This vulnerability is an instance of a use after free vulnerability. The vulnerability is triggered by a crafted PDF file that can cause a memory access violation exception in the XFA engine because of a dangling reference left as a consequence of freeing an object in the computation that manipulates internal nodes in a graph representation of a document object model used in XFA. Successful exploitation could lead to arbitrary code execution.

The bug was discovered 02/13/2018. The weakness was shared 02/13/2018 by Sebastian Apelt with Jaanus Kp Clarified Security as APSB18-02 as confirmed security bulletin (Website). It is possible to read the advisory at helpx.adobe.com. This vulnerability is uniquely identified as CVE-2018-4888 since 01/03/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/23/2024).

The vulnerability scanner Nessus provides a plugin with the ID 106846 (Adobe Reader <= 2015.006.30394 / 2017.011.30070 / 2018.009.20050 Multiple Vulnerabilities (APSB18-02)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370776 (Adobe Reader and Acrobat Multiple Security Vulnerabilities (APSB18-02)).

Upgrading to version 2015.006.30413, 2015.006.30416, 2017.011.30078 or 2018.011.20035 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (106846) and SecurityFocus (BID 102995†). The entries VDB-113849, VDB-113850, VDB-113851 and VDB-113852 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 106846
Nessus Name: Adobe Reader <= 2015.006.30394 / 2017.011.30070 / 2018.009.20050 Multiple Vulnerabilities (APSB18-02)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 63528
OpenVAS Name: Adobe Acrobat 2017 Multiple Vulnerabilities-apsb18-02 (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Acrobat Reader 2015.006.30413/2015.006.30416/2017.011.30078 /2018.011.20035

Timelineinfo

01/03/2018 🔍
02/13/2018 +41 days 🔍
02/13/2018 +0 days 🔍
02/13/2018 +0 days 🔍
02/13/2018 +0 days 🔍
02/15/2018 +2 days 🔍
02/27/2018 +12 days 🔍
02/27/2018 +0 days 🔍
07/23/2024 +2338 days 🔍

Sourcesinfo

Vendor: adobe.com

Advisory: APSB18-02
Researcher: Sebastian Apelt
Organization: Jaanus Kp Clarified Security
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-4888 (🔍)
GCVE (CVE): GCVE-0-2018-4888
GCVE (VulDB): GCVE-100-113859

OVAL: 🔍

SecurityFocus: 102995 - Adobe Acrobat and Reader Multiple Remote Code Execution Vulnerabilities
SecurityTracker: 1040364

See also: 🔍

Entryinfo

Created: 02/27/2018 11:03
Updated: 07/23/2024 03:45
Changes: 02/27/2018 11:03 (77), 01/08/2020 20:08 (6), 02/10/2023 13:55 (4), 07/23/2024 03:45 (16)
Complete: 🔍
Cache ID: 216::103

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

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