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CVE-2020-8017— race condition on texlive-filesystem cron job allows for the deletion of unintended files

Quick assessment

Affected
SUSE SUSE Linux Enterprise Module for Desktop Applications 15-SP1
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

openSUSE是德国SUSE公司的一套基于Linux的自由操作系统与开源社区项目。 多款SUSE产品中的texlive-filesystem存在安全漏洞。攻击者可利用该漏洞删除系统上的任意文件。以下产品及版本受到影响：SUSE Linux Enterprise Module for Desktop Applications 15-SP1版本（ texlive-filesystem 2017.135-9.5.1之前版本）；SUSE Linux Enterprise Software Development

CVSS 6.2 · Medium EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1548 · Abuse Elevation Control Mechanism
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I. Basic Information for CVE-2020-8017

Vulnerability Information
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Vulnerability Title
race condition on texlive-filesystem cron job allows for the deletion of unintended files
Source: CVE Program / CVE List V5
Vulnerability Description
A Race Condition Enabling Link Following vulnerability in the cron job shipped with texlive-filesystem of SUSE Linux Enterprise Module for Desktop Applications 15-SP1, SUSE Linux Enterprise Software Development Kit 12-SP4, SUSE Linux Enterprise Software Development Kit 12-SP5; openSUSE Leap 15.1 allows local users in group mktex to delete arbitrary files on the system This issue affects: SUSE Linux Enterprise Module for Desktop Applications 15-SP1 texlive-filesystem versions prior to 2017.135-9.5.1. SUSE Linux Enterprise Software Development Kit 12-SP4 texlive-filesystem versions prior to 2013.74-16.5.1. SUSE Linux Enterprise Software Development Kit 12-SP5 texlive-filesystem versions prior to 2013.74-16.5.1. openSUSE Leap 15.1 texlive-filesystem versions prior to 2017.135-lp151.8.3.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
Source: CVE Program / CVE List V5
Vulnerability Title
多款SUSE产品texlive-filesystem 竞争条件问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
openSUSE是德国SUSE公司的一套基于Linux的自由操作系统与开源社区项目。 多款SUSE产品中的texlive-filesystem存在安全漏洞。攻击者可利用该漏洞删除系统上的任意文件。以下产品及版本受到影响：SUSE Linux Enterprise Module for Desktop Applications 15-SP1版本（ texlive-filesystem 2017.135-9.5.1之前版本）；SUSE Linux Enterprise Software Development
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
SUSE SUSE Linux Enterprise Module for Desktop Applications 15-SP1 texlive-filesystem ~ 2017.135-9.5.1 -
SUSE SUSE Linux Enterprise Software Development Kit 12-SP4 texlive-filesystem ~ 2013.74-16.5.1 -
SUSE SUSE Linux Enterprise Software Development Kit 12-SP5 texlive-filesystem ~ 2013.74-16.5.1 -
openSUSE openSUSE Leap 15.1 texlive-filesystem ~ 2017.135-lp151.8.3.1 -

II. Public POCs for CVE-2020-8017

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III. Intelligence Information for CVE-2020-8017

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Mailing List Discussions for CVE-2020-8017 (1)

IV. Related Vulnerabilities

Same product: SUSE Linux Enterprise Module for Desktop Applications 15-SP1
Same vendor: SUSE
Same weakness: CWE-367

V. Comments for CVE-2020-8017

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