PolicyKit up to 0.112 Connection authentication_agent_new_cookie numeric error

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-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in PolicyKit up to 0.112. The impacted element is the function authentication_agent_new_cookie of the component Connection Handler. The manipulation results in numeric error. This vulnerability was named CVE-2015-4625. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, was found in PolicyKit up to 0.112. Affected is the function authentication_agent_new_cookie of the component Connection Handler. The manipulation with an unknown input leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Integer overflow in the authentication_agent_new_cookie function in PolicyKit (aka polkit) before 0.113 allows local users to gain privileges by creating a large number of connections, which triggers the issuance of a duplicate cookie value.

The weakness was presented 10/26/2015 (Website). The advisory is shared for download at securityfocus.com. This vulnerability is traded as CVE-2015-4625 since 06/16/2015. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 84686 (Fedora 22 : polkit-0.113-1.fc22 (2015-11058)), 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197205 (Ubuntu Security Notification for Policykit-1 Vulnerabilities (USN-3717-1)).

Upgrading to version 0.113 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 databases at Tenable (84686), SecurityFocus (BID 75267†) and Vulnerability Center (SBV-54090†). See VDB-78883, VDB-78884, VDB-78885 and VDB-121137 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

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

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 84686
Nessus Name: Fedora 22 : polkit-0.113-1.fc22 (2015-11058)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for polkit FEDORA-2015-11743
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PolicyKit 0.113

Timelineinfo

06/02/2015 🔍
06/16/2015 +14 days 🔍
07/03/2015 +17 days 🔍
07/14/2015 +11 days 🔍
10/26/2015 +104 days 🔍
10/26/2015 +0 days 🔍
10/27/2015 +1 days 🔍
11/02/2015 +6 days 🔍
06/25/2022 +2427 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Status: Not defined

CVE: CVE-2015-4625 (🔍)
GCVE (CVE): GCVE-0-2015-4625
GCVE (VulDB): GCVE-100-78888
SecurityFocus: 75267
SecurityTracker: 1035023
Vulnerability Center: 54090 - PolicyKit <0.113 Local Privilege Escalation Vulnerability due to Predictable Cookie Values, Medium

See also: 🔍

Entryinfo

Created: 10/27/2015 08:46
Updated: 06/25/2022 07:14
Changes: 10/27/2015 08:46 (65), 03/09/2018 10:35 (6), 06/25/2022 07:14 (3)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Are you interested in using VulDB?

Download the whitepaper to learn more about our service!