Ruby 2.4.1 UTF-8 Parser parser_tokadd_utf8 out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in Ruby 2.4.1 and classified as critical. Affected by this vulnerability is the function parser_tokadd_utf8 of the component UTF-8 Parser. The manipulation leads to out-of-bounds. This vulnerability is listed as CVE-2017-11465. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Ruby 2.4.1 (Programming Language Software). It has been rated as critical. This issue affects the function parser_tokadd_utf8 of the component UTF-8 Parser. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The parser_yyerror function in the UTF-8 parser in Ruby 2.4.1 allows attackers to cause a denial of service (invalid write or read) or possibly have unspecified other impact via a crafted Ruby script, related to the parser_tokadd_utf8 function in parse.y. NOTE: this might have security relevance as a bypass of a $SAFE protection mechanism.

The bug was discovered 07/13/2017. The weakness was presented 07/19/2017 (Website). The advisory is shared at bugs.ruby-lang.org. The identification of this vulnerability is CVE-2017-11465 since 07/19/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, 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.

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Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

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

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / 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: 🔍

Timelineinfo

07/13/2017 🔍
07/19/2017 +6 days 🔍
07/19/2017 +0 days 🔍
07/19/2017 +0 days 🔍
07/20/2017 +1 days 🔍
12/13/2022 +1972 days 🔍

Sourcesinfo

Advisory: 13742
Status: Not defined

CVE: CVE-2017-11465 (🔍)
GCVE (CVE): GCVE-0-2017-11465
GCVE (VulDB): GCVE-100-104093

Entryinfo

Created: 07/20/2017 09:19
Updated: 12/13/2022 11:32
Changes: 07/20/2017 09:19 (58), 10/29/2019 13:21 (1), 12/13/2022 11:32 (3)
Complete: 🔍
Cache ID: 216:CFF:103

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