GHSA-qfr5-wjpw-q4c4: Denial of Service in python-ldap

Ubuntu Security Notice 5508-1 - It was discovered that Python LDAP incorrectly handled certain regular expressions. An remote attacker could possibly use this issue to cause a denial of service.

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.