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.
4.8	$0-$5k	0.00

A vulnerability was found in Symantec Endpoint Encryption 11.1.3. It has been declared as problematic. Affected by this vulnerability is some unknown functionality. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

Prior to SEE v11.1.3MP1, Symantec Endpoint Encryption can be susceptible to a null pointer de-reference issue, which can result in a NullPointerException that can lead to a privilege escalation scenario.

The bug was discovered 11/08/2017. The weakness was released 11/13/2017 by Kyriakos Economou (kyREcon) with Nettitude as SYM17-012 as confirmed security advisory (Website). The advisory is shared at symantec.com. This vulnerability is known as CVE-2017-15526 since 10/17/2017. The exploitation appears to be difficult. The attack can only be initiated within the local network. The exploitation needs additional levels of successful authentication. Neither technical details nor an exploit are publicly available. The advisory points out:

Symantec Endpoint Encryption can be susceptible to a null pointer de-reference issue, which can result in a NullPointerException that can lead to a privilege escalation scenario. A null-pointer dereference takes place when a pointer with a value of NULL is used as though it pointed to a valid memory area.

The vulnerability scanner Nessus provides a plugin with the ID 104573 (Symantec Endpoint Encryption < 11.1.3 MP1 (SYM17-012)), 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 370669 (Symantec Endpoint Encryption Multiple Vulnerabilities. (SYM17-012)).

Upgrading to version 11.1.3MP1 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (104573). Entry connected to this vulnerability is available at 109320.

Productinfo

Vendor

• Symantec

Name

• Endpoint Encryption

Version

• 11.1.3

License

• commercial

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.0

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Symantec): 4.2
Vendor Vector (Symantec): 🔍

NVD Base Score: 6.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 104573
Nessus Name: Symantec Endpoint Encryption < 11.1.3 MP1 (SYM17-012)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Endpoint Encryption 11.1.3MP1

Timelineinfo

10/17/2017 🔍
11/07/2017 +21 days 🔍
11/08/2017 +1 days 🔍
11/08/2017 +0 days 🔍
11/13/2017 +5 days 🔍
11/13/2017 +0 days 🔍
11/14/2017 +1 days 🔍
11/15/2017 +1 days 🔍
12/06/2019 +751 days 🔍

Sourcesinfo

Vendor: symantec.com

Advisory: SYM17-012
Researcher: Kyriakos Economou (kyREcon)
Organization: Nettitude
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-15526 (🔍)
SecurityFocus: 101698 - Symantec Endpoint Encryption CVE-2017-15526 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 11/14/2017 14:18
Updated: 12/06/2019 06:31
Changes: 11/14/2017 14:18 (85), 12/06/2019 06:31 (4)
Complete: 🔍

Discussion

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