VDB-199299 · CVE-2022-28738 · Nessus 239811

Ruby up to 3.0.3/3.1.1 Regexp Compiler double free

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.0	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in Ruby up to 3.0.3/3.1.1. Affected by this issue is some unknown functionality of the component Regexp Compiler. Performing a manipulation results in double free. This vulnerability is cataloged as CVE-2022-28738. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Ruby up to 3.0.3/3.1.1 (Programming Language Software). This affects some unknown functionality of the component Regexp Compiler. The manipulation with an unknown input leads to a double free vulnerability. CWE is classifying the issue as CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was shared 05/10/2022. It is possible to read the advisory at hackerone.com. This vulnerability is uniquely identified as CVE-2022-28738 since 04/06/2022. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 239811 (TencentOS Server 3: ruby (TSSA-2022:0176)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.0.4 or 3.1.2 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (239811) and CERT Bund (WID-SEC-2022-0119). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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

Programming Language Software

Name

Ruby

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 239811
Nessus Name: TencentOS Server 3: ruby (TSSA-2022:0176)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Ruby 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-2022-28738 (🔍)
GCVE (CVE): GCVE-0-2022-28738
GCVE (VulDB): GCVE-100-199299
CERT Bund: WID-SEC-2022-0119 - Ruby: Mehrere Schwachstellen

Entryinfo

Created: 05/10/2022 07:29
Updated: 05/09/2026 10:22
Changes: 05/10/2022 07:29 (40), 05/12/2022 09:13 (1), 06/20/2025 04:27 (16), 05/09/2026 10:22 (7)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.