PCS up to 0.9.156 pcsd session fixiation

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in PCS up to 0.9.156 and classified as problematic. The affected element is an unknown function of the component pcsd. Performing a manipulation results in session fixiation. This vulnerability is known as CVE-2016-0721. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, was found in PCS up to 0.9.156. This affects an unknown part of the component pcsd. The manipulation with an unknown input leads to a session fixiation vulnerability. CWE is classifying the issue as CWE-384. Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Session fixation vulnerability in pcsd in pcs before 0.9.157.

The bug was discovered 11/03/2016. The weakness was published 04/21/2017 (Website). The advisory is shared at lists.fedoraproject.org. This vulnerability is uniquely identified as CVE-2016-0721 since 12/16/2015. 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. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 22 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 95342 (CentOS 7 : pcs (CESA-2016:2596)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 236162 (Red Hat Update for pcs (RHSA-2016:2596)).

Upgrading to version 0.9.157 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 (95342) and SecurityFocus (BID 97977†). Similar entry is available at VDB-100424. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.0

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

NVD Base Score: 8.1
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: Session fixiation
CWE: CWE-384
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: 95342
Nessus Name: CentOS 7 : pcs (CESA-2016:2596)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for pcs FEDORA-2016-3
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PCS 0.9.157
Patch: github.com

Timelineinfo

12/16/2015 🔍
11/03/2016 +323 days 🔍
11/25/2016 +22 days 🔍
11/28/2016 +3 days 🔍
04/21/2017 +144 days 🔍
04/21/2017 +0 days 🔍
04/21/2017 +0 days 🔍
04/21/2017 +0 days 🔍
12/01/2022 +2050 days 🔍

Sourcesinfo

Advisory: acdbbe8307e6f4a36b2c7754765e732e43fe8d17
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-0721 (🔍)
GCVE (CVE): GCVE-0-2016-0721
GCVE (VulDB): GCVE-100-100425
SecurityFocus: 97977 - pcs daemon CVE-2016-0721 Session Fixation Vulnerability
OSVDB: - CVE-2016-0721 - pcs - Session Fixation Issue

See also: 🔍

Entryinfo

Created: 04/21/2017 21:45
Updated: 12/01/2022 17:38
Changes: 04/21/2017 21:45 (80), 12/01/2022 17:31 (5), 12/01/2022 17:38 (1)
Complete: 🔍
Cache ID: 216:83D:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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