cmark-gfm up to 0.29.0.gfm.6 Markdown validate_protocol out-of-bounds
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.2 | $0-$5k | 0.00 |
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.
Product
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.3VulDB 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.): 🔍
CVSSv2
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Out-of-boundsCWE: CWE-125 / CWE-119
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: cmark-gfm 0.29.0.gfm.7
Timeline
12/29/2022 🔍01/24/2023 🔍
01/24/2023 🔍
01/24/2023 🔍
Sources
Advisory: GHSA-c944-cv5f-hpvrStatus: Confirmed
CVE: CVE-2023-22485 (🔍)
Entry
Created: 01/24/2023 07:59Changes: 01/24/2023 07:59 (51)
Complete: 🔍
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