Upstream information
Description
fail2ban is a daemon to ban hosts that cause multiple authentication errors. In versions 0.9.7 and prior, 0.10.0 through 0.10.6, and 0.11.0 through 0.11.2, there is a vulnerability that leads to possible remote code execution in the mailing action mail-whois. Command `mail` from mailutils package used in mail actions like `mail-whois` can execute command if unescaped sequences (`\n~`) are available in "foreign" input (for instance in whois output). To exploit the vulnerability, an attacker would need to insert malicious characters into the response sent by the whois server, either via a MITM attack or by taking over a whois server. The issue is patched in versions 0.10.7 and 0.11.3. As a workaround, one may avoid the usage of action `mail-whois` or patch the vulnerability manually.SUSE information
Overall state of this security issue: Does not affect SUSE products
This issue is currently rated as having moderate severity.
| National Vulnerability Database | |
|---|---|
| Base Score | 6.8 |
| Vector | AV:N/AC:M/Au:N/C:P/I:P/A:P |
| Access Vector | Network |
| Access Complexity | Medium |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | Partial |
| Availability Impact | Partial |
| National Vulnerability Database | |
|---|---|
| Base Score | 6.1 |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:N |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | Required |
| Scope | Changed |
| Confidentiality Impact | None |
| Integrity Impact | High |
| Availability Impact | None |
| CVSSv3 Version | 3.1 |
SUSE Security Advisories:
- openSUSE-SU-2021:1274-1, published Thu Sep 16 15:41:22 2021
List of released packages
| Product(s) | Fixed package version(s) | References |
|---|---|---|
| SUSE Package Hub 15 SP1 |
| Patchnames: openSUSE-2021-1274 |
| SUSE Package Hub 15 SP2 |
| Patchnames: openSUSE-2021-1274 |
| SUSE Package Hub 15 SP3 |
| Patchnames: openSUSE-2021-1274 |
| openSUSE Leap 15.2 |
| Patchnames: openSUSE-2021-1274 |
| openSUSE Leap 15.3 |
| Patchnames: openSUSE-2021-1274 |
| openSUSE Tumbleweed |
| Patchnames: openSUSE Tumbleweed GA fail2ban-0.11.2-3.1 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Desktop 15 SP5 | fail2ban | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | fail2ban | Analysis |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | fail2ban | Analysis |
| SUSE Linux Enterprise Server 15 SP5 | fail2ban | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | fail2ban | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | fail2ban | Analysis |
| SUSE Manager Proxy 4.3 | fail2ban | Analysis |
| SUSE Manager Retail Branch Server 4.3 | fail2ban | Analysis |
| SUSE Manager Server 4.3 | fail2ban | Analysis |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise Desktop 15 SP4 | fail2ban | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | fail2ban | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | fail2ban | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | fail2ban | Analysis |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | fail2ban | Analysis |
| SUSE Linux Enterprise Server 15 SP4 | fail2ban | Analysis |
| SUSE Linux Enterprise Server 15 SP4-LTSS | fail2ban | Analysis |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE Linux Enterprise Real Time 15 SP4 | fail2ban | Analysis |
| SUSE Package Hub 15 SP1 | fail2ban | Released |
| SUSE Package Hub 15 SP2 | fail2ban | Released |
| SUSE Package Hub 15 SP3 | fail2ban | Released |
SUSE Timeline for this CVE
CVE page created: Fri Jul 16 23:44:33 2021CVE page last modified: Thu Feb 22 17:17:34 2024