Executive Summary
| Summary | |
|---|---|
| Title | dovecot regression update |
| Informations | |||
|---|---|---|---|
| Name | DSA-3828 | First vendor Publication | 2017-04-10 |
| Vendor | Debian | Last vendor Modification | 2017-04-11 |
| Severity (Vendor) | N/A | Revision | 2 |
Security-Database Scoring CVSS v3
| Cvss vector : N/A | |||
|---|---|---|---|
| Overall CVSS Score | NA | ||
| Base Score | NA | Environmental Score | NA |
| impact SubScore | NA | Temporal Score | NA |
| Exploitabality Sub Score | NA | ||
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P) | |||
|---|---|---|---|
| Cvss Base Score | 5 | Attack Range | Network |
| Cvss Impact Score | 2.9 | Attack Complexity | Low |
| Cvss Expoit Score | 10 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| The Dovecot update issued as DSA-3828-1 introduced a regression, this update reverts the backported patch. Further analysis by the Dovecot team has shown that only versions starting from 2.2.26 are affected. For reference, the original advisory text follows. It was discovered that the Dovecot email server is vulnerable to a denial of service attack. When the "dict" passdb and userdb are used for user authentication, the username sent by the IMAP/POP3 client is sent through var_expand() to perform %variable expansion. Sending specially crafted %variable fields could result in excessive memory usage causing the process to crash (and restart). For the stable distribution (jessie), this problem has been fixed in version 1:2.2.13-12~deb8u3. We recommend that you upgrade your dovecot packages. |
Original Source
| Url : http://www.debian.org/security/2017/dsa-3828 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-20 | Improper Input Validation |
CPE : Common Platform Enumeration
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2017-07-17 | Name : The remote Fedora host is missing a security update. File : fedora_2017-e8b639c286.nasl - Type : ACT_GATHER_INFO |
| 2017-07-07 | Name : The remote openSUSE host is missing a security update. File : openSUSE-2017-787.nasl - Type : ACT_GATHER_INFO |
| 2017-05-12 | Name : The remote SUSE host is missing one or more security updates. File : suse_SU-2017-1250-1.nasl - Type : ACT_GATHER_INFO |
| 2017-05-01 | Name : The remote FreeBSD host is missing one or more security-related updates. File : freebsd_pkg_a8c8001b216c11e780aa005056925db4.nasl - Type : ACT_GATHER_INFO |
| 2017-04-28 | Name : The remote Fedora host is missing a security update. File : fedora_2017-da4ed58fd5.nasl - Type : ACT_GATHER_INFO |
| 2017-04-27 | Name : The remote Fedora host is missing a security update. File : fedora_2017-6ef28e38d6.nasl - Type : ACT_GATHER_INFO |
| 2017-04-12 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-3828.nasl - Type : ACT_GATHER_INFO |
| 2017-04-12 | Name : The remote Ubuntu host is missing a security-related patch. File : ubuntu_USN-3258-2.nasl - Type : ACT_GATHER_INFO |
| 2017-04-11 | Name : The remote Ubuntu host is missing a security-related patch. File : ubuntu_USN-3258-1.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2018-08-21 17:21:45 |
|
| 2018-06-24 09:21:19 |
|
| 2017-04-13 13:21:49 |
|
| 2017-04-11 13:18:42 |
|
| 2017-04-11 00:23:26 |
|
