LDAP slapd Denial-of-service (CVE-2020-36221 to CVE-2020-36230)
Advisory ID | CVE Number | Date discovered | Severity | Advisory revision |
---|---|---|---|---|
STORM-2021-010 | CVE-2020-36221 , CVE-2020-36222 , CVE-2020-36223 , CVE-2020-36224 , CVE-2020-36225 , CVE-2020-36226 , CVE-2020-36227 , CVE-2020-36228 , CVE-2020-36229 , CVE-2020-36230 | 03/18/2021 | medium | v3 |
Vulnerability details
Multiples flaws were discovered in OpenLDAP before 2.4.57 leading to a slapd crash, resulting in a denial of service.
Impacted products
Products | Severity | Detail |
---|---|---|
Stormshield Network Security | medium | SNS is impacted |
Netasq | medium | NetAsq is impacted |
Revisions
Version | Date | Description |
---|---|---|
v1 | 05/04/2021 | Initial release |
v2 | 05/05/2021 | Typo fix in CVE numbers |
v3 | 05/27/2021 | Update fix versions |
Stormshield Network Security |
CVSS v3.1 Overall Score: 5.5 |
Analysis |
Impacted version |
A malicious unauthenticated LDAP packet could lead to a slapd crash, resulting in a temporary denial of service.
|
|
Workaround solution |
Solution |
From SNS 3.3 and higher: Ensure that your LDAP plugin is enabled, and the ldap_tcp:427 alarm is set to block. |
The vulnerability is fixed in versions
|
Attack Vector | Attack Complexity | Privileges Required | User Interaction | Scope | Confidentiality Impact | Integrity Impact | Availability impact |
---|---|---|---|---|---|---|---|
Network | Low | None | None | Unchanged | None | None | Low |
CVSS Base score: 5.3 | CVSS Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L) |
Exploit Code Maturity | Remediation Level | Report Confidence |
---|---|---|
Proof of concept code | Official fix | Confirmed |
CVSS Temporal score: 4.8 | CVSS Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C) |
Confidentiality Requirement | Integrity Requirement | Availability Requirement |
---|---|---|
High | High | High |
CVSS Environmental score: 5.5 | CVSS Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C/CR:H/IR:H/AR:H/MAV:X/MAC:X/MPR:X/MUI:X/MS:X/MC:X/MI:X/MA:X) |
Netasq |
CVSS v3.1 Overall Score: 5.5 |
Analysis |
Impacted version |
A malicious unauthenticated LDAP packet could lead to a slapd crash, resulting in a temporary denial of service.
|
|
Workaround solution |
Solution |
There is no workaround. |
There is no solution. |
Attack Vector | Attack Complexity | Privileges Required | User Interaction | Scope | Confidentiality Impact | Integrity Impact | Availability impact |
---|---|---|---|---|---|---|---|
Network | Low | None | None | Unchanged | None | None | Low |
CVSS Base score: 5.3 | CVSS Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L) |
Exploit Code Maturity | Remediation Level | Report Confidence |
---|---|---|
Proof of concept code | Official fix | Confirmed |
CVSS Temporal score: 4.8 | CVSS Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C) |
Confidentiality Requirement | Integrity Requirement | Availability Requirement |
---|---|---|
High | High | High |
CVSS Environmental score: 5.5 | CVSS Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C/CR:H/IR:H/AR:H/MAV:X/MAC:X/MPR:X/MUI:X/MS:X/MC:X/MI:X/MA:X) |