Ruby up to 2.6.9/2.7.5/3.0.3/3.1.1 String-to-Float Conversion Kernel#Float/String#to_f buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Ruby up to 2.6.9/2.7.5/3.0.3/3.1.1. Affected by this vulnerability is the function Kernel#Float/String#to_f of the component String-to-Float Conversion. Such manipulation leads to buffer overflow. This vulnerability is listed as CVE-2022-28739. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Ruby up to 2.6.9/2.7.5/3.0.3/3.1.1 (Programming Language Software). Affected by this issue is the function Kernel#Float/String#to_f of the component String-to-Float Conversion. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability.

The weakness was presented 05/10/2022. The advisory is available at hackerone.com. This vulnerability is handled as CVE-2022-28739 since 04/06/2022. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 214476 (Debian dla-3450 : libruby2.5 - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.6.10, 2.7.6, 3.0.4 or 3.1.2 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (214476) and CERT Bund (WID-SEC-2022-0119). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • Gentoo Linux
  • Open Source Ruby
  • SUSE openSUSE
  • RESF Rocky Linux

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 214476
Nessus Name: Debian dla-3450 : libruby2.5 - security update

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Ruby 2.6.10/2.7.6/3.0.4/3.1.2

Timelineinfo

04/06/2022 🔍
05/10/2022 +34 days 🔍
05/10/2022 +0 days 🔍
05/09/2026 +1460 days 🔍

Sourcesinfo

Advisory: hackerone.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2022-28739 (🔍)
GCVE (CVE): GCVE-0-2022-28739
GCVE (VulDB): GCVE-100-199298
CERT Bund: WID-SEC-2022-0119 - Ruby: Mehrere Schwachstellen

Entryinfo

Created: 05/10/2022 07:28
Updated: 05/09/2026 10:22
Changes: 05/10/2022 07:28 (41), 05/12/2022 09:10 (1), 01/23/2025 04:38 (16), 11/05/2025 05:47 (19), 05/09/2026 10:22 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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