CriticalCVE-2020-8025

outdated entries in permissions profiles for /var/lib/pcp/tmp/* may cause security issues (CVE-2020-8025)

Published 07.08.2020Sources: CVE.org

Public exploit

What is affected, what to do

An exploit is publicly available. Update SUSE Linux Enterprise Server 12-SP4 to version 20170707-3.24.1, SUSE Linux Enterprise Server 15-LTSS to version 20180125-3.27.1, SUSE Linux Enterprise Server for SAP 15 to version 20180125-3.27.1.

Affected: SUSE Linux Enterprise Server 12-SP4 lt permissions..20170707-3.24.1
SUSE Linux Enterprise Server 15-LTSS lt permissions..20180125-3.27.1
SUSE Linux Enterprise Server for SAP 15 lt permissions..20180125-3.27.1
openSUSE Leap 15.1 lt permissions..20181116-lp151.4.24.1
openSUSE Tumbleweed lt permissions..20200624
Fixed in: SUSE Linux Enterprise Server 12-SP4 20170707-3.24.1
SUSE Linux Enterprise Server 15-LTSS 20180125-3.27.1
SUSE Linux Enterprise Server for SAP 15 20180125-3.27.1
openSUSE Leap 15.1 20181116-lp151.4.24.1
openSUSE Tumbleweed 20200624

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Metrics

9.3

Priority

XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

Source: NVD, CVSS v3

6.1

CVSS v3

Severity Medium on the scale from 0 to 10.

Source: CVE.org

0.5 %

EPSS score

Low — model estimates < 1% exploitation likelihood.

Source: FIRST EPSS, percentile 41.1

Show all metrics

Severity: Critical
Priority (0–325) The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first? Read in glossary: 44.01 Methodology
Exploit maturity An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack. Read in glossary: PoC (publicly reported)
XIEM Effective CVSS XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command. Read in glossary: 9.3 Methodology
CVSS v3 CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions. Read in glossary: 6.1
EPSS score The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“. Read in glossary: 0.5 %; Low — model estimates < 1% exploitation likelihood.
EPSS percentile The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking. Read in glossary: 41.1; High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
KEV status The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching. Read in glossary: —
Published: 07.08.2020
CWE CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect. Read in glossary: CWE-279

Detection rules

No NEOSEC detection rule is available for this vulnerability yet.

Classification under NIS2 and CRA

Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

NIS2 NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management. Read in glossary: High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
CRA The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates. Read in glossary: From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001 ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security. Read in glossary: Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

Description

A Incorrect Execution-Assigned Permissions vulnerability in the permissions package of SUSE Linux Enterprise Server 12-SP4, SUSE Linux Enterprise Server 15-LTSS, SUSE Linux Enterprise Server for SAP 15; openSUSE Leap 15.1, openSUSE Tumbleweed sets the permissions for some of the directories of the pcp package to unintended settings. This issue affects: SUSE Linux Enterprise Server 12-SP4 permissions versions prior to 20170707-3.24.1. SUSE Linux Enterprise Server 15-LTSS permissions versions prior to 20180125-3.27.1. SUSE Linux Enterprise Server for SAP 15 permissions versions prior to 20180125-3.27.1. openSUSE Leap 15.1 permissions versions prior to 20181116-lp151.4.24.1. openSUSE Tumbleweed permissions versions prior to 20200624.

Source: NVD (NIST), cvelistv5

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

Affected products
		Affected versions	Fixed in
openSUSE	openSUSE Leap 15.1	`permissions – < 20181116-lp151.4.24.1`	`20181116-lp151.4.24.1`
openSUSE	openSUSE Tumbleweed	`permissions – < 20200624`	`20200624`
SUSE	SUSE Linux Enterprise Server 12-SP4	`permissions – < 20170707-3.24.1`	`20170707-3.24.1`
SUSE	SUSE Linux Enterprise Server 15-LTSS	`permissions – < 20180125-3.27.1`	`20180125-3.27.1`
SUSE	SUSE Linux Enterprise Server for SAP 15	`permissions – < 20180125-3.27.1`	`20180125-3.27.1`

Vendors and products

Affected operating systems

Affected operating systems

Linux	suse	linux_enterprise_high_performance_computing	`15`
Linux	suse	linux_enterprise_server	`15`
Linux	suse	linux_enterprise_software_development_kit	`12`

Weakness classes (CWE)

CWE-279Incorrect Execution-Assigned Permissions
Variant
While it is executing, the product sets the permissions of an object in a way that violates the intended permissions that have been specified by the user.
Entry at MITRE CWE-279

Public exploit references

Publicly reported proof-of-concepts, exploit modules and detection templates for this vulnerability. NEOSEC links to the original sources only and does not provide any exploit code.

Public exploit references

Reference tagged as exploit	bugzilla.suse.com (opens in a new tab)	PoC (publicly reported)reported, not verified	—

References & sources

bugzilla.suse.comshow_bug.cgi?id=1171883x_refsource_CONFIRM, Exploit, Issue tracking, Vendor advisory

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<a href="https://intel.neosec.eu/en/cve/CVE-2020-8025"><img src="https://intel.neosec.eu/badge/cve/CVE-2020-8025.svg?lang=en" alt="CVE-2020-8025 – NEOSEC Intel" height="20"></a>