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CVE-2018-12477— obs-service-refresh_patches can be tricked into deleting '..' or other unrelated directories

Quick assessment

Affected
openSUSE Open Build Service
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.

Open Build Service（OBS）是一套通用的、以自动、一致和可重复的方式从源代码构建和分发软件包的系统。 Open Build Service d6244245dda5367767efc989446fe4b5e4609cce之前版本中存在安全漏洞。远程攻击者可通过借助obs-service-refresh_patches利用该漏洞删除目录。

AI Predicted 8.1 Difficulty: Moderate EPSS 1.17% · P66

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2018-12477

Vulnerability Information
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Vulnerability Title
obs-service-refresh_patches can be tricked into deleting '..' or other unrelated directories
Source: CVE Program / CVE List V5
Vulnerability Description
A Improper Neutralization of CRLF Sequences vulnerability in Open Build Service allows remote attackers to cause deletion of directories by tricking obs-service-refresh_patches to delete them. Affected releases are openSUSE Open Build Service: versions prior to d6244245dda5367767efc989446fe4b5e4609cce.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
对CRLF序列的转义处理不恰当(CRLF注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Open Build Service 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open Build Service（OBS）是一套通用的、以自动、一致和可重复的方式从源代码构建和分发软件包的系统。 Open Build Service d6244245dda5367767efc989446fe4b5e4609cce之前版本中存在安全漏洞。远程攻击者可通过借助obs-service-refresh_patches利用该漏洞删除目录。
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
openSUSE Open Build Service unspecified ~ d6244245dda5367767efc989446fe4b5e4609cce -

II. Public POCs for CVE-2018-12477

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III. Intelligence Information for CVE-2018-12477

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Vendor Advisories for CVE-2018-12477 (1)

Same Patch Batch · openSUSE · 2018-10-09 · 4 CVEs total

CVE-2018-12474 Crafted service parameters allows to induce unexpected behaviour in obs-service-tar_scm
CVE-2018-12478 obs-service-replace_using_package_version allows to specify arbitrary input files
CVE-2018-12479 Request controller allows to create requests with arbitrary request IDs

IV. Related Vulnerabilities

Same product: Open Build Service
Same vendor: openSUSE
Same weakness: CWE-93

V. Comments for CVE-2018-12477

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