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.
github.com/trentm/python-markdown2/commit/7b651260739647de5198323e0445b1618750c374
github.com/trentm/python-markdown2/pull/387
lists.fedoraproject.org/archives/list/[email protected]/message/BRP5RN35JZTSJ3JT4722F447ZDK7LZS5/
lists.fedoraproject.org/archives/list/[email protected]/message/J752422YELXLMLZJPVJVKD2KKHHQRVEH/
lists.fedoraproject.org/archives/list/[email protected]/message/JTIX5UXRDJZJ57DO4V33ZNJTNKWGBQLY/
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