mruby 1.4.1 fiber.c Argument memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in mruby 1.4.1. Impacted is an unknown function of the file mrbgems/mruby-fiber/src/fiber.c. The manipulation as part of Argument results in memory corruption. This vulnerability was named CVE-2018-12248. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, was found in mruby 1.4.1 (Programming Language Software). Affected is an unknown part of the file mrbgems/mruby-fiber/src/fiber.c. The manipulation as part of a Argument leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in mruby 1.4.1. There is a heap-based buffer over-read associated with OP_ENTER because mrbgems/mruby-fiber/src/fiber.c does not extend the stack in cases of many arguments to fiber.

The bug was discovered 06/06/2018. The weakness was presented 06/12/2018 (Website). The advisory is shared for download at github.com. This vulnerability is traded as CVE-2018-12248 since 06/12/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

See VDB-119389 and VDB-119387 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
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: Memory corruption
CWE: 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

06/06/2018 🔍
06/12/2018 +5 days 🔍
06/12/2018 +0 days 🔍
06/12/2018 +0 days 🔍
06/12/2018 +0 days 🔍
03/22/2023 +1744 days 🔍

Sourcesinfo

Product: github.com

Advisory: 778500563a9f7ceba996937dc886bd8cde29b42b
Status: Not defined

CVE: CVE-2018-12248 (🔍)
GCVE (CVE): GCVE-0-2018-12248
GCVE (VulDB): GCVE-100-119388
See also: 🔍

Entryinfo

Created: 06/12/2018 21:46
Updated: 03/22/2023 15:47
Changes: 06/12/2018 21:46 (58), 02/18/2020 11:59 (1), 03/22/2023 15:47 (4)
Complete: 🔍
Cache ID: 216:249:103

Once again VulDB remains the best source for vulnerability data.

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