Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2017-17439 | First vendor Publication | 2017-12-06 |
| Vendor | Cve | Last vendor Modification | 2024-11-21 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | |||
|---|---|---|---|
| Overall CVSS Score | 7.5 | ||
| Base Score | 7.5 | Environmental Score | 7.5 |
| impact SubScore | 3.6 | Temporal Score | 7.5 |
| Exploitabality Sub Score | 3.9 | ||
| Attack Vector | Network | Attack Complexity | Low |
| Privileges Required | None | User Interaction | None |
| Scope | Unchanged | Confidentiality Impact | None |
| Integrity Impact | None | Availability Impact | High |
| 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
| In Heimdal through 7.4, remote unauthenticated attackers are able to crash the KDC by sending a crafted UDP packet containing empty data fields for client name or realm. The parser would unconditionally dereference NULL pointers in that case, leading to a segmentation fault. This is related to the _kdc_as_rep function in kdc/kerberos5.c and the der_length_visible_string function in lib/asn1/der_length.c. |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17439 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-476 | NULL Pointer Dereference |
CPE : Common Platform Enumeration
| Type | Description | Count |
|---|---|---|
| Application | 1 | |
| Os | 1 |
Snort® IPS/IDS
| Date | Description |
|---|---|
| 2019-10-08 | Heimdal KDC malformed as-req denial of service attempt RuleID : 51400 - Revision : 1 - Type : SERVER-OTHER |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2018-01-15 | Name : The remote Fedora host is missing a security update. File : fedora_2017-f0e5ad250c.nasl - Type : ACT_GATHER_INFO |
| 2018-01-10 | Name : The remote Fedora host is missing a security update. File : fedora_2017-2962e58478.nasl - Type : ACT_GATHER_INFO |
| 2017-12-14 | Name : The remote openSUSE host is missing a security update. File : openSUSE-2017-1364.nasl - Type : ACT_GATHER_INFO |
| 2017-12-08 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-4055.nasl - Type : ACT_GATHER_INFO |
Sources (Detail)
Alert History
| Date | Informations |
|---|---|
| 2024-11-28 13:04:49 |
|
| 2021-05-04 12:59:40 |
|
| 2021-04-22 02:12:35 |
|
| 2020-05-23 02:04:38 |
|
| 2020-05-23 00:58:18 |
|
| 2019-05-18 12:06:02 |
|
| 2017-12-30 09:22:05 |
|
| 2017-12-23 00:21:33 |
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| 2017-12-15 13:23:45 |
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| 2017-12-09 13:24:14 |
|
| 2017-12-09 09:22:23 |
|
| 2017-12-07 09:21:28 |
|
| 2017-12-06 22:57:01 |
|
