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veracodeVeracode Vulnerability DatabaseVERACODE:29566
HistoryMar 04, 2021 - 4:44 a.m.

Regular Expression Denial Of Service (ReDoS)

2021-03-0404:44:25
Veracode Vulnerability Database
sca.analysiscenter.veracode.com
5

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

markdown2 is vulnerable to regular expression denial of service (ReDoS). The vulnerability exists as the regular expressions found in self.regex_defns, _fenced_code_block_re, and _emacs_oneliner_vars_pat causes a huge consumption of resources when parsing strings with many whitespace or newline characters.

CPENameOperatorVersion
markdown2le2.3.10
markdown2le2.3.10

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P