File Overwrite Vulnerability in RubyGems by Ruby
CVE-2017-0901

7.5HIGH

Key Information:

Vendor

Hackerone

Status
Rubygems
Vendor
CVE Published:
31 August 2017

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 18%

What is CVE-2017-0901?

RubyGems version 2.6.12 and earlier contains a vulnerability where it fails to properly validate gem specification names. This flaw allows attackers to create malicious gems that can overwrite any file on the filesystem. Such exploitation can potentially lead to unauthorized access or disruption of services, highlighting the importance of validating the integrity of gem sources and maintaining updated versions of the software.

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Affected Version(s)

RubyGems Versions before 2.6.13

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2017-0901 - Proof of Concept

References

https://usn.ubuntu.com/3685-1/
vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3553-1/
vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2018:0585
vendor-advisoryx_refsource_REDHAT

EPSS Score

18% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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