Adobe Acrobat Reader NTLM SSO Hash information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Adobe Acrobat Reader up to 2015.006.30417/2017.011.30079/2018.011.20038. Affected by this issue is some unknown functionality of the component NTLM SSO Hash Handler. The manipulation leads to information disclosure. This vulnerability is uniquely identified as CVE-2018-4993. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Adobe Acrobat Reader up to 2015.006.30417/2017.011.30079/2018.011.20038 (Document Reader Software). This issue affects some unknown processing of the component NTLM SSO Hash Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

Adobe Acrobat and Reader versions 2018.011.20038 and earlier, 2017.011.30079 and earlier, and 2015.006.30417 and earlier have an NTLM SSO hash theft vulnerability. Successful exploitation could lead to information disclosure.

The bug was discovered 05/14/2018. The weakness was disclosed 05/14/2018 with Check Point as APSB18-09 as confirmed security bulletin (Website). It is possible to read the advisory at helpx.adobe.com. The identification of this vulnerability is CVE-2018-4993 since 01/03/2018. The attack may be initiated remotely. No form of authentication is needed for a successful 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 attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

It is declared as highly functional. We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 109897 (Adobe Acrobat < 2015.006.30418 / 2017.011.30080 / 2018.011.20040 Multiple Vulnerabilities (APSB18-09) (macOS)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370948 (Adobe Reader and Acrobat Multiple Security Vulnerabilities (APSB18-09)).

Upgrading to version 2015.006.30418, 2017.011.30080 or 2018.011.20040 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 (109897) and SecurityFocus (BID 104177†). The entries VDB-117722, VDB-117723, VDB-117724 and VDB-117725 are pretty similar. Be aware that VulDB is the high quality 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: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Highly functional

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 109897
Nessus Name: Adobe Acrobat < 2015.006.30418 / 2017.011.30080 / 2018.011.20040 Multiple Vulnerabilities (APSB18-09) (macOS)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 10837
OpenVAS Name: Adobe Acrobat 2017 Security Updates(apsb18-09)-Windows
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: badpdf.rb
MetaSploit Name: BADPDF Malicious PDF Creator
MetaSploit File: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Acrobat Reader 2015.006.30418/2017.011.30080/2018.011.20040

Timelineinfo

01/03/2018 🔍
05/14/2018 +131 days 🔍
05/14/2018 +0 days 🔍
05/14/2018 +0 days 🔍
05/14/2018 +0 days 🔍
05/15/2018 +0 days 🔍
05/17/2018 +2 days 🔍
07/09/2018 +52 days 🔍
04/24/2025 +2481 days 🔍

Sourcesinfo

Vendor: adobe.com

Advisory: APSB18-09
Organization: Check Point
Status: Confirmed

CVE: CVE-2018-4993 (🔍)
GCVE (CVE): GCVE-0-2018-4993
GCVE (VulDB): GCVE-100-117767

OVAL: 🔍

SecurityFocus: 104177 - Adobe Acrobat and Reader NT LAN Manager CVE-2018-4993 Information Disclosure Vulnerability
SecurityTracker: 1040920

See also: 🔍

Entryinfo

Created: 05/16/2018 00:20
Updated: 04/24/2025 04:43
Changes: 05/16/2018 00:20 (81), 02/05/2020 15:41 (5), 03/13/2023 13:42 (4), 07/22/2024 03:57 (16), 04/24/2025 04:43 (2)
Complete: 🔍
Cache ID: 216::103

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