mruby up to 3.1 str_escape use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.1$0-$5k0.00

A vulnerability, which was classified as critical, has been found in mruby up to 3.1 (Programming Language Software). Affected by this issue is the function str_escape. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability.

The weakness was presented 04/05/2022. The advisory is shared for download at huntr.dev. This vulnerability is handled as CVE-2022-1212 since 04/04/2022. There are known technical details, but no exploit is available.

Upgrading to version 3.2 eliminates this vulnerability. Applying the patch 3cf291f72224715942beaf8553e42ba8891ab3c6 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.3
VulDB Meta Temp Score: 8.1

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

CNA Base Score: 9.3
CNA Vector (huntr.dev): 🔍

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: mruby 3.2
Patch: 3cf291f72224715942beaf8553e42ba8891ab3c6

Timelineinfo

04/04/2022 🔍
04/05/2022 +1 days 🔍
04/05/2022 +0 days 🔍
04/06/2022 +1 days 🔍

Sourcesinfo

Advisory: 3cf291f72224715942beaf8553e42ba8891ab3c6
Status: Confirmed

CVE: CVE-2022-1212 (🔍)

Entryinfo

Created: 04/05/2022 12:25
Updated: 04/06/2022 19:15
Changes: 04/05/2022 12:25 (51), 04/06/2022 19:15 (2)
Complete: 🔍

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