Vulnerabilities > CVE-2022-24724 - Integer Overflow or Wraparound vulnerability in multiple products

CVSS 9.8 - CRITICAL

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

HIGH

Integrity impact

HIGH

Availability impact

HIGH

network

low complexity

github

fedoraproject

CWE-190

critical

NVD

Published: 2022-03-03

Updated: 2023-11-07

Summary

cmark-gfm is GitHub's extended version of the C reference implementation of CommonMark. Prior to versions 0.29.0.gfm.3 and 0.28.3.gfm.21, an integer overflow in cmark-gfm's table row parsing `table.c:row_from_string` may lead to heap memory corruption when parsing tables who's marker rows contain more than UINT16_MAX columns. The impact of this heap corruption ranges from Information Leak to Arbitrary Code Execution depending on how and where `cmark-gfm` is used. If `cmark-gfm` is used for rendering remote user controlled markdown, this vulnerability may lead to Remote Code Execution (RCE) in applications employing affected versions of the `cmark-gfm` library. This vulnerability has been patched in the following cmark-gfm versions 0.29.0.gfm.3 and 0.28.3.gfm.21. A workaround is available. The vulnerability exists in the table markdown extensions of cmark-gfm. Disabling the table extension will prevent this vulnerability from being triggered.

Vulnerable Configurations

Part	Description	Count
Application	Github Github Cmark GFM - Github Cmark GFM 0.27.1.Gfm.0 Github Cmark GFM 0.27.1.Gfm.1 Github Cmark GFM 0.27.1.Gfm.2 Github Cmark GFM 0.27.1.Gfm.3 Github Cmark GFM 0.27.1.Gfm.4 Github Cmark GFM 0.28.0.Gfm.5 Github Cmark GFM 0.28.0.Gfm.6 Github Cmark GFM 0.28.0.Gfm.7 Github Cmark GFM 0.28.0.Gfm.8 Github Cmark GFM 0.28.0.Gfm.9 Github Cmark GFM 0.28.0.Gfm.10 Github Cmark GFM 0.28.0.Gfm.11 Github Cmark GFM 0.28.3.Gfm.12 Github Cmark GFM 0.28.3.Gfm.13 Github Cmark GFM 0.28.3.Gfm.14 Github Cmark GFM 0.28.3.Gfm.15 Github Cmark GFM 0.28.3.Gfm.16 Github Cmark GFM 0.28.3.Gfm.17 Github Cmark GFM 0.28.3.Gfm.18 Github Cmark GFM 0.28.3.Gfm.19 Github Cmark GFM 0.28.3.Gfm.20 Github Cmark GFM 0.29.0.Gfm.0 Github Cmark GFM 0.29.0.Gfm.1 Github Cmark GFM 0.29.0.Gfm.2	25
OS	Fedoraproject Fedoraproject Fedora 34 Fedoraproject Fedora 35 Fedoraproject Fedora 36	3

Common Weakness Enumeration (CWE)

CWE-190 - Integer Overflow or Wraparound

Common Attack Pattern Enumeration and Classification (CAPEC)

Forced Integer Overflow
This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

References