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cvelistGitHub_MCVELIST:CVE-2023-22486
HistoryJan 24, 2023 - 2:30 a.m.

CVE-2023-22486 cmark-gfm Quadratic complexity bug in handle_close_bracket may lead to a denial of service

2023-01-2402:30:29
CWE-400
CWE-407
GitHub_M
www.cve.org
3
cmark-gfm
denial of service
vulnerability
fix

CVSS3

3.5

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS

0.001

Percentile

34.6%

cmark-gfm is GitHub’s fork of cmark, a CommonMark parsing and rendering library and program in C. Versions prior to 0.29.0.gfm.7 contain a polynomial time complexity issue in handle_close_bracket that may lead to unbounded resource exhaustion and subsequent denial of service. This vulnerability has been patched in 0.29.0.gfm.7.

CNA Affected

[
  {
    "vendor": "github",
    "product": "cmark-gfm",
    "versions": [
      {
        "version": "< 0.29.0.gfm.7",
        "status": "affected"
      }
    ]
  }
]

CVSS3

3.5

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS

0.001

Percentile

34.6%