CVE-2024-27280

CRITICAL

9.8

Description

A buffer-overread issue was discovered in StringIO 3.0.1, as distributed in Ruby 3.0.x through 3.0.6 and 3.1.x through 3.1.4. The ungetbyte and ungetc methods on a StringIO can read past the end of a string, and a subsequent call to StringIO.gets may return the memory value. 3.0.3 is the main fixed version; however, for Ruby 3.0 users, a fixed version is stringio 3.0.1.1, and for Ruby 3.1 users, a fixed version is stringio 3.0.1.2.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published5/14/2024

Last Modified11/4/2025

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-120

References

https://hackerone.com/reports/1399856(cve@mitre.org)

https://www.ruby-lang.org/en/news/2024/03/21/buffer-overread-cve-2024-27280/(cve@mitre.org)

http://seclists.org/fulldisclosure/2025/Sep/53(af854a3a-2127-422b-91ae-364da2661108)

http://seclists.org/fulldisclosure/2025/Sep/54(af854a3a-2127-422b-91ae-364da2661108)

http://seclists.org/fulldisclosure/2025/Sep/55(af854a3a-2127-422b-91ae-364da2661108)

https://hackerone.com/reports/1399856(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2024/09/msg00000.html(af854a3a-2127-422b-91ae-364da2661108)

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/27LUWREIFTP3MQAW7QE4PJM4DPAQJWXF/(af854a3a-2127-422b-91ae-364da2661108)

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XYDHPHEZI7OQXTQKTDZHGZNPIJH7ZV5N/(af854a3a-2127-422b-91ae-364da2661108)

https://security.netapp.com/advisory/ntap-20250502-0003/(af854a3a-2127-422b-91ae-364da2661108)

https://www.ruby-lang.org/en/news/2024/03/21/buffer-overread-cve-2024-27280/(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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