9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.055 Low
EPSS
Percentile
93.1%
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.
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.055 Low
EPSS
Percentile
93.1%