systemd up to 235 DNS Reply dns_packet_read_type_window input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

A vulnerability was found in systemd up to 235. It has been declared as problematic. This vulnerability affects the function dns_packet_read_type_window of the component DNS Reply Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. CVE summarizes:

In systemd 223 through 235, a remote DNS server can respond with a custom crafted DNS NSEC resource record to trigger an infinite loop in the dns_packet_read_type_window() function of the 'systemd-resolved' service and cause a DoS of the affected service.

The bug was discovered 10/26/2017. The weakness was released 10/26/2017 by Thomas Imbert with Sogeti ESEC R&D (Website). The advisory is available at bugs.launchpad.net. This vulnerability was named CVE-2017-15908 since 10/25/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 104213 (Ubuntu 17.04 / 17.10 : systemd vulnerability (USN-3466-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197044 (Ubuntu Security Notification for Systemd Vulnerabilities (USN-3558-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (104213). Entry connected to this vulnerability is available at 113508.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

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Current Price Estimation: 🔍

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Nessus ID: 104213
Nessus Name: Ubuntu 17.04 / 17.10 : systemd vulnerability (USN-3466-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for systemd USN-3466-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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Patch: github.com

Timelineinfo

10/25/2017 🔍
10/26/2017 +1 days 🔍
10/26/2017 +0 days 🔍
10/26/2017 +0 days 🔍
10/26/2017 +0 days 🔍
10/26/2017 +0 days 🔍
10/26/2017 +0 days 🔍
10/27/2017 +1 days 🔍
10/27/2017 +0 days 🔍
01/04/2023 +1895 days 🔍

Sourcesinfo

Advisory: USN-3558-1
Researcher: Thomas Imbert
Organization: Sogeti ESEC R&D
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-15908 (🔍)
SecurityTracker: 1039662
SecurityFocus: 101600 - systemd 'dns_packet_read_type_window()' Function Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 10/27/2017 09:17
Updated: 01/04/2023 14:55
Changes: 10/27/2017 09:17 (77), 12/01/2019 08:06 (6), 01/04/2023 14:55 (5)
Complete: 🔍

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