cmark-gfm up to 0.29.0.gfm.6 Markdown validate_protocol out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in cmark-gfm up to 0.29.0.gfm.6. This vulnerability affects the function validate_protocol of the component Markdown Handler. Such manipulation leads to out-of-bounds. This vulnerability is referenced as CVE-2023-22485. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in cmark-gfm up to 0.29.0.gfm.6 and classified as problematic. Affected by this issue is the function validate_protocol of the component Markdown Handler. 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. CVE summarizes:

cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. In versions prior 0.29.0.gfm.7, a crafted markdown document can trigger an out-of-bounds read in the `validate_protocol` function. We believe this bug is harmless in practice, because the out-of-bounds read accesses `malloc` metadata without causing any visible damage.This vulnerability has been patched in 0.29.0.gfm.7.

The weakness was published 01/24/2023 as GHSA-c944-cv5f-hpvr. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2023-22485 since 12/29/2022. There are known technical details, but no exploit is available.

Upgrading to version 0.29.0.gfm.7 eliminates this vulnerability.

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Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: cmark-gfm 0.29.0.gfm.7

Timelineinfo

12/29/2022 🔍
01/24/2023 +26 days 🔍
01/24/2023 +0 days 🔍
01/24/2023 +0 days 🔍

Sourcesinfo

Advisory: GHSA-c944-cv5f-hpvr
Status: Confirmed

CVE: CVE-2023-22485 (🔍)
GCVE (CVE): GCVE-0-2023-22485
GCVE (VulDB): GCVE-100-219200

Entryinfo

Created: 01/24/2023 07:59
Changes: 01/24/2023 07:59 (51)
Complete: 🔍
Cache ID: 216::103

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