CVE-2021-44686
Published: 7 December 2021
calibre before 5.32.0 contains a regular expression that is vulnerable to ReDoS (Regular Expression Denial of Service) in html_preprocess_rules in ebooks/conversion/preprocess.py.
Priority
Status
Package | Release | Status |
---|---|---|
calibre Launchpad, Ubuntu, Debian |
bionic |
Needed
|
focal |
Needed
|
|
hirsute |
Ignored
(end of life)
|
|
impish |
Ignored
(end of life)
|
|
lunar |
Not vulnerable
(6.3.0+dfsg-2)
|
|
trusty |
Ignored
(end of standard support)
|
|
upstream |
Released
(5.33.0)
|
|
xenial |
Needs triage
|
|
jammy |
Needed
|
|
kinetic |
Ignored
(end of life, was needed)
|
|
mantic |
Not vulnerable
(6.3.0+dfsg-2)
|
|
Patches: upstream: https://github.com/kovidgoyal/calibre/commit/235b7e38c197ba4a3c17531e516610af8795e348 |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.5 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |