Executive Summary
| Summary | |
|---|---|
| Title | opensmtpd security update |
| Informations | |||
|---|---|---|---|
| Name | DSA-4611 | First vendor Publication | 2020-01-29 |
| Vendor | Debian | Last vendor Modification | 2020-01-29 |
| Severity (Vendor) | N/A | Revision | 1 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | |||
|---|---|---|---|
| Overall CVSS Score | 9.8 | ||
| Base Score | 9.8 | Environmental Score | 9.8 |
| impact SubScore | 5.9 | Temporal Score | 9.8 |
| Exploitabality Sub Score | 3.9 | ||
| Attack Vector | Network | Attack Complexity | Low |
| Privileges Required | None | User Interaction | None |
| Scope | Unchanged | Confidentiality Impact | High |
| Integrity Impact | High | Availability Impact | High |
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 10 | Attack Range | Network |
| Cvss Impact Score | 10 | Attack Complexity | Low |
| Cvss Expoit Score | 10 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| Qualys discovered that the OpenSMTPD SMTP server performed insufficient validation of email addresses which could result in the execution of arbitrary commands as root. In addition this update fixes a denial of service by triggering an opportunistic TLS downgrade. For the oldstable distribution (stretch), these problems have been fixed in version 6.0.2p1-2+deb9u2. For the stable distribution (buster), these problems have been fixed in version 6.0.3p1-5+deb10u3. This update also includes non-security bugfixes which were already lined up for the Buster 10.3 point release. We recommend that you upgrade your opensmtpd packages. For the detailed security status of opensmtpd please refer to its security tracker page at: https://security-tracker.debian.org/tracker/opensmtpd |
Original Source
| Url : http://www.debian.org/security/2020/dsa-4611 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 50 % | CWE-755 | Improper Handling of Exceptional Conditions |
| 50 % | CWE-78 | Improper Sanitization of Special Elements used in an OS Command ('OS Command Injection') (CWE/SANS Top 25) |
CPE : Common Platform Enumeration
| Type | Description | Count |
|---|---|---|
| Application | 1 | |
| Os | 2 | |
| Os | 2 | |
| Os | 1 |
SAINT Exploits
| Description | Link |
|---|---|
| OpenSMTPD MAIL FROM command injection | More info here |
Snort® IPS/IDS
| Date | Description |
|---|---|
| 2020-04-14 | OpenSMTPD smtp_mailaddr command injection attempt RuleID : 53432 - Revision : 1 - Type : SERVER-MAIL |
| 2020-04-14 | OpenSMTPD smtp_mailaddr command injection attempt RuleID : 53431 - Revision : 1 - Type : SERVER-MAIL |
Alert History
| Date | Informations |
|---|---|
| 2020-05-23 13:03:43 |
|
| 2020-01-30 00:17:56 |
|
