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.
5.7	$0-$5k	0.00

A vulnerability was found in sddm up to 0.12 and classified as problematic. This issue affects some unknown processing of the file daemon/Greeter.cpp of the component KDE Crash Handler. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

daemon/Greeter.cpp in sddm before 0.13.0 does not properly disable the KDE crash handler, which allows local users to gain privileges by crashing a greeter when using certain themes, as demonstrated by the plasma-workspace breeze theme.

The weakness was published 11/24/2015 (Website). It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2015-0856 since 01/07/2015. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 89373 (Fedora 23 : sddm-0.12.0-5.fc23 (2015-b15b90eeaa)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l.

Upgrading to version 0.13.0 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (89373), SecurityFocus (BID 77099†) and Vulnerability Center (SBV-54709†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• sddm

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

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: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

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: 89373
Nessus Name: Fedora 23 : sddm-0.12.0-5.fc23 (2015-b15b90eeaa)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for sddm FEDORA-2015-9
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: sddm 0.13.0
Patch: github.com

Timelineinfo

01/07/2015 🔍
09/27/2015 +263 days 🔍
10/14/2015 +17 days 🔍
10/31/2015 +17 days 🔍
11/24/2015 +24 days 🔍
11/24/2015 +0 days 🔍
11/25/2015 +1 days 🔍
12/01/2015 +6 days 🔍
03/04/2016 +94 days 🔍
06/27/2022 +2306 days 🔍

Sourcesinfo

Advisory: FEDORA-2015-b15b90eeaa
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-0856 (🔍)
SecurityFocus: 77099 - SDDM 'Greeter.cpp' Local Denial of Service Vulnerability
Vulnerability Center: 54709 - sddm before 0.13.0 Local Code Execution in daemon/Greeter.cpp, Medium

Entryinfo

Created: 11/25/2015 09:53 AM
Updated: 06/27/2022 04:20 PM
Changes: 11/25/2015 09:53 AM (52), 05/09/2018 11:45 AM (19), 06/27/2022 04:05 PM (4), 06/27/2022 04:12 PM (1), 06/27/2022 04:20 PM (1)
Complete: 🔍
Cache ID: 18:F69:40

Discussion

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