CVE-2021-46823
ReDoS in LDAP schema parser
6.5
MEDIUM
CVSS 3.1
EPSS 0.19%
Description
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.
How to fix CVE-2021-46823
To remediate CVE-2021-46823, upgrade the affected package to a fixed version below.
- —no fix listed
- —upgrade to 3.4.0 or later
- —upgrade to 3.4.0 or later
Is CVE-2021-46823 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0
- from 0, < 3.4.0
- from 0, < 3.4.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |