Libreswan up to 3.16 UDP Packet programs/pluto/ikev1.c input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Libreswan up to 3.16. The affected element is an unknown function of the file programs/pluto/ikev1.c of the component UDP Packet Handler. Such manipulation leads to input validation. This vulnerability is listed as CVE-2016-5361. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Libreswan up to 3.16. It has been rated as critical. Affected by this issue is an unknown part of the file programs/pluto/ikev1.c of the component UDP Packet Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:

programs/pluto/ikev1.c in libreswan before 3.17 retransmits in initial-responder states, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed UDP packet. NOTE: the original behavior complies with the IKEv1 protocol, but has a required security update from the libreswan vendor; as of 2016-06-10, it is expected that several other IKEv1 implementations will have vendor-required security updates, with separate CVE IDs assigned to each.

The weakness was presented 06/16/2016 (Website). The advisory is shared for download at github.com. This vulnerability is handled as CVE-2016-5361 since 06/09/2016. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 95845 (Scientific Linux Security Update : libreswan on SL7.x x86_64), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Scientific Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 236175 (Red Hat Update for libreswan security (RHSA-2016:2603)).

Upgrading to version 3.17 eliminates this vulnerability. A possible mitigation has been published 5 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (95845). Once again VulDB remains the best source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
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: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 95845
Nessus Name: Scientific Linux Security Update : libreswan on SL7.x x86_64
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 871165
OpenVAS Name: RedHat Update for libreswan RHSA-2016:2603-02
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: Libreswan 3.17
Patch: github.com

Timelineinfo

06/09/2016 🔍
06/16/2016 +7 days 🔍
06/16/2016 +0 days 🔍
06/17/2016 +1 days 🔍
11/03/2016 +139 days 🔍
12/15/2016 +42 days 🔍
09/26/2024 +2842 days 🔍

Sourcesinfo

Product: github.com

Advisory: 152d6d95632d8b9477c170f1de99bcd86d7fb1d6
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-5361 (🔍)
GCVE (CVE): GCVE-0-2016-5361
GCVE (VulDB): GCVE-100-88028

Entryinfo

Created: 06/17/2016 16:49
Updated: 09/26/2024 20:36
Changes: 06/17/2016 16:49 (61), 01/27/2019 16:41 (11), 08/24/2022 11:31 (5), 08/24/2022 11:40 (1), 09/26/2024 20:36 (16)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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