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CVE-2018-12476— obs-service-extract_file's outfilename parameter allows to write files outside of package directory

Quick assessment

Affected
SUSE SUSE Linux Enterprise Server 15
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.

SUSE Linux Enterprise Module for Open Buildservice Development Tools 15中存在安全漏洞。攻击者可利用该漏洞向包目录之外的位置写入文件。

CVSS 4.3 · Medium EPSS 1.03% · P62

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2018-12476

Vulnerability Information
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Vulnerability Title
obs-service-extract_file's outfilename parameter allows to write files outside of package directory
Source: CVE Program / CVE List V5
Vulnerability Description
Relative Path Traversal vulnerability in obs-service-tar_scm of SUSE Linux Enterprise Server 15; openSUSE Factory allows remote attackers with control over a repository to overwrite files on the machine of the local user if a malicious service is executed. This issue affects: SUSE Linux Enterprise Server 15 obs-service-tar_scm versions prior to 0.9.2.1537788075.fefaa74:. openSUSE Factory obs-service-tar_scm versions prior to 0.9.2.1537788075.fefaa74.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
相对路径遍历
Source: CVE Program / CVE List V5
Vulnerability Title
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15中存在安全漏洞。攻击者可利用该漏洞向包目录之外的位置写入文件。
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 Server 15 obs-service-tar_scm ~ 0.9.2.1537788075.fefaa74: -
openSUSE Factory obs-service-tar_scm ~ 0.9.2.1537788075.fefaa74 -

II. Public POCs for CVE-2018-12476

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III. Intelligence Information for CVE-2018-12476

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Vendor Advisories for CVE-2018-12476 (1)

Same Patch Batch · SUSE · 2020-01-27 · 4 CVEs total

CVE-2017-14807 8.1 HIGH SQL injection in ui-server/app/models/diary_entry.rb in SUSE Studio onsite
CVE-2018-20105 4.0 MEDIUM yast2-rmt exposes CA private key passhrase in log-file
CVE-2017-14806 3.7 LOW Insecure handling of repodata and packages in SUSE Studio onlite

IV. Related Vulnerabilities

Same product: SUSE Linux Enterprise Server 15
Same vendor: SUSE
Same weakness: CWE-23

V. Comments for CVE-2018-12476

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