NTPsec up to 1.1.2 ntp_control.c read_sysvars out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

A vulnerability has been found in NTPsec up to 1.1.2 and classified as critical. Affected by this vulnerability is the function read_sysvars of the file ntp_control.c. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in NTPsec before 1.1.3. Because of a bug in ctl_getitem, there is a stack-based buffer over-read in read_sysvars in ntp_control.c in ntpd.

The bug was discovered 01/16/2019. The weakness was presented 01/16/2019 (Website). The advisory is shared at dumpco.re. This vulnerability is known as CVE-2019-6443 since 01/15/2019. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 121340 (openSUSE Security Update : ntpsec (openSUSE-2019-82)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371590 (NTPsec Multiple Vulnerabilities).

Upgrading to version 1.1.3 eliminates this vulnerability. A possible mitigation has been published 1 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (121340) and Exploit-DB (46175). See 129792, 129794 and 129795 for similar entries.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 7.8

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.1
NVD Vector: 🔍

CVSSv2info

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Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

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EPSS Percentile: 🔍

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Nessus ID: 121340
Nessus Name: openSUSE Security Update : ntpsec (openSUSE-2019-82)
Nessus File: 🔍
Nessus Risk: 🔍
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Nessus Context: 🔍

Qualys ID: 🔍
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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: NTPsec 1.1.3

Timelineinfo

01/15/2019 🔍
01/16/2019 +1 days 🔍
01/16/2019 +0 days 🔍
01/16/2019 +0 days 🔍
01/16/2019 +0 days 🔍
01/23/2019 +7 days 🔍
01/24/2019 +1 days 🔍
05/01/2020 +463 days 🔍

Sourcesinfo

Advisory: dumpco.re
Status: Confirmed

CVE: CVE-2019-6443 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 01/16/2019 13:35
Updated: 05/01/2020 18:57
Changes: 01/16/2019 13:35 (73), 05/01/2020 18:57 (5)
Complete: 🔍

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