CVE-2021-46823
Published: 18 June 2022
python-ldap before 3.4.0 is vulnerable to a denial of service when ldap.schema is used for untrusted schema definitions, because of a regular expression denial of service (ReDoS) flaw in the LDAP schema parser. By sending crafted regex input, a remote authenticated attacker could exploit this vulnerability to cause a denial of service condition.
Priority
Status
Package | Release | Status |
---|---|---|
python-ldap Launchpad, Ubuntu, Debian |
bionic |
Released
(3.0.0-1ubuntu0.2)
|
focal |
Released
(3.2.0-4ubuntu2.1)
|
|
impish |
Released
(3.2.0-4ubuntu5.1)
|
|
jammy |
Released
(3.2.0-4ubuntu7.1)
|
|
upstream |
Released
(3.4.0-1)
|
|
Patches: upstream: https://github.com/python-ldap/python-ldap/pull/444/commits/31dbb4b075b4710e3adac7ac998a02aaeb2c5d3d |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 6.5 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |