Vulnerability Details : CVE-2021-46823
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.
Vulnerability category: Denial of service
Products affected by CVE-2021-46823
- cpe:2.3:a:python-ldap:python-ldap:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-46823
0.14%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 50 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-46823
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.0
|
MEDIUM | AV:N/AC:L/Au:S/C:N/I:N/A:P |
8.0
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST |
References for CVE-2021-46823
-
https://exchange.xforce.ibmcloud.com/vulnerabilities/221507
python-ldap denial of service undefined Vulnerability ReportThird Party Advisory;VDB Entry
-
https://github.com/python-ldap/python-ldap/security/advisories/GHSA-r8wq-qrxc-hmcm
ReDoS in LDAP schema parser (GHSL-2021-117 #424) · Advisory · python-ldap/python-ldap · GitHubThird Party Advisory
Jump to