ntpd 4.2.8 sntp type conversion

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in ntpd 4.2.8. It has been declared as problematic. This affects an unknown part of the component sntp. Such manipulation leads to type conversion. This vulnerability is listed as CVE-2015-5219. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in ntpd 4.2.8 (Network Management Software). It has been rated as critical. Affected by this issue is some unknown processing of the component sntp. The manipulation with an unknown input leads to a type conversion vulnerability. Using CWE to declare the problem leads to CWE-704. The product does not correctly convert an object, resource, or structure from one type to a different type. Impacted is availability. CVE summarizes:

The ULOGTOD function in ntp.d in SNTP before 4.2.7p366 does not properly perform type conversions from a precision value to a double, which allows remote attackers to cause a denial of service (infinite loop) via a crafted NTP packet.

The weakness was presented 10/22/2015 by Miroslav Lichvar with Red Hat as cisco-sa-20151021-ntp as confirmed advisory (Website). The advisory is available at tools.cisco.com. This vulnerability is handled as CVE-2015-5219 since 07/01/2015. The exploitation is known to be easy. Access to the local network is required for this attack to succeed. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 88026 (F5 Networks BIG-IP : SNTP vulnerability (K60352002)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family F5 Networks Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157189 (Oracle Enterprise Linux Security Update for ntp (ELSA-2016-0780)).

Upgrading to version 4.2.8p4 eliminates this vulnerability. A possible mitigation has been published 4 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (107597), Tenable (88026), SecurityFocus (BID 76473†) and Vulnerability Center (SBV-57827†). bugzilla.redhat.com is providing further details. See VDB-78844, VDB-78845, VDB-78846 and VDB-78847 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Type conversion
CWE: CWE-704
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 88026
Nessus Name: F5 Networks BIG-IP : SNTP vulnerability (K60352002)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: ALAS-2015-593
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: ntpd 4.2.8p4
Patch: github.com

Timelineinfo

07/01/2015 🔍
08/19/2015 +49 days 🔍
10/22/2015 +64 days 🔍
10/29/2015 +7 days 🔍
01/19/2016 +82 days 🔍
01/20/2016 +1 days 🔍
01/21/2016 +1 days 🔍
03/31/2016 +70 days 🔍
07/21/2017 +477 days 🔍
06/25/2022 +1800 days 🔍

Sourcesinfo

Advisory: cisco-sa-20151021-ntp
Researcher: Miroslav Lichvar
Organization: Red Hat
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-5219 (🔍)
GCVE (CVE): GCVE-0-2015-5219
GCVE (VulDB): GCVE-100-78938

OVAL: 🔍

X-Force: 107597 - Network Time Protocol sntp denial of service
SecurityFocus: 76473 - NTP CVE-2015-5219 Denial of Service Vulnerability
Vulnerability Center: 57827 - NTP <4.2.7p367 Remote DoS Vulnerability in sntp Processing, Medium

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 10/29/2015 09:42
Updated: 06/25/2022 12:43
Changes: 10/29/2015 09:42 (81), 02/03/2019 10:22 (14), 06/25/2022 12:43 (4)
Complete: 🔍
Cache ID: 216::103

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