mistune up to 2.0.2 Regular Expression denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in mistune up to 2.0.2. It has been classified as problematic. The impacted element is an unknown function of the component Regular Expression Handler. The manipulation leads to denial of service. This vulnerability is documented as CVE-2022-34749. There is not any exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in mistune up to 2.0.2. It has been rated as problematic. This issue affects an unknown code block of the component Regular Expression Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

In mistune through 2.0.2, support of inline markup is implemented by using regular expressions that can involve a high amount of backtracking on certain edge cases. This behavior is commonly named catastrophic backtracking.

The weakness was released 07/26/2022 as a6d43215132fe4f3d93f8d7e90ba83b16a0838b2. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2022-34749 since 06/28/2022. The technical details are unknown and an exploit is not publicly available.

Applying the patch a6d43215132fe4f3d93f8d7e90ba83b16a0838b2 is able to eliminate this problem. The bugfix is ready for download at github.com.

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

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.6

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: a6d43215132fe4f3d93f8d7e90ba83b16a0838b2

Timelineinfo

06/28/2022 🔍
07/26/2022 +28 days 🔍
07/26/2022 +0 days 🔍
08/27/2022 +32 days 🔍

Sourcesinfo

Advisory: a6d43215132fe4f3d93f8d7e90ba83b16a0838b2
Status: Confirmed

CVE: CVE-2022-34749 (🔍)
GCVE (CVE): GCVE-0-2022-34749
GCVE (VulDB): GCVE-100-205091

Entryinfo

Created: 07/26/2022 19:06
Updated: 08/27/2022 13:43
Changes: 07/26/2022 19:06 (41), 08/27/2022 13:43 (11)
Complete: 🔍
Cache ID: 216::103

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

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