CVSS2
Attack Vector
NETWORK
Attack 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
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
EPSS
Percentile
93.7%
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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 12 | all | cmark-gfm | < 0.29.0.gfm.3-3 | cmark-gfm_0.29.0.gfm.3-3_all.deb |
Debian | 11 | all | cmark-gfm | <= 0.29.0.gfm.0-6 | cmark-gfm_0.29.0.gfm.0-6_all.deb |
Debian | 999 | all | cmark-gfm | < 0.29.0.gfm.3-3 | cmark-gfm_0.29.0.gfm.3-3_all.deb |
Debian | 13 | all | cmark-gfm | < 0.29.0.gfm.3-3 | cmark-gfm_0.29.0.gfm.3-3_all.deb |
Debian | 12 | all | ghostwriter | < 2.1.6+ds-1 | ghostwriter_2.1.6+ds-1_all.deb |
Debian | 11 | all | ghostwriter | < 1.8.1-2 | ghostwriter_1.8.1-2_all.deb |
Debian | 999 | all | ghostwriter | < 2.1.6+ds-1 | ghostwriter_2.1.6+ds-1_all.deb |
Debian | 13 | all | ghostwriter | < 2.1.6+ds-1 | ghostwriter_2.1.6+ds-1_all.deb |
Debian | 12 | all | python-cmarkgfm | < 0.7.0-1 | python-cmarkgfm_0.7.0-1_all.deb |
Debian | 11 | all | python-cmarkgfm | <= 0.4.2-1 | python-cmarkgfm_0.4.2-1_all.deb |
CVSS2
Attack Vector
NETWORK
Attack 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
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
EPSS
Percentile
93.7%