Buffer-Overread Vulnerability in Ruby's StringIO
CVE-2024-27280

9.8CRITICAL

Key Information:

Vendor

Ruby

Vendor
CVE Published:
14 May 2024

What is CVE-2024-27280?

A buffer-overread issue has been identified in the StringIO module of Ruby, affecting versions from 3.0.x to 3.1.x. The flaw allows the ungetbyte and ungetc methods to read bytes beyond the end of a string, which may expose sensitive memory values if the StringIO.gets method is subsequently invoked. The main fixed version for StringIO is 3.0.3, with additional fixes provided for Ruby 3.0 users via StringIO 3.0.1.1 and for Ruby 3.1 users via StringIO 3.0.1.2. Users are advised to update to the relevant patched versions to mitigate the associated security risks.

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References

https://hackerone.com/reports/1399856
https://www.ruby-lang.org/en/news/2024/03/21/buffer-overr...

EPSS Score

7% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

JSON
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