Contiki-NG up to 4.1 MQTT Server parse_publish_vhdr memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.9$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Contiki-NG up to 4.1. This affects the function parse_publish_vhdr of the component MQTT Server. Such manipulation leads to memory corruption. This vulnerability is listed as CVE-2018-19417. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Contiki-NG up to 4.1 and classified as critical. Affected by this issue is the function parse_publish_vhdr of the component MQTT Server. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in the MQTT server in Contiki-NG before 4.2. The function parse_publish_vhdr() that parses MQTT PUBLISH messages with a variable length header uses memcpy to input data into a fixed size buffer. The allocated buffer can fit only MQTT_MAX_TOPIC_LENGTH (default 64) bytes, and a length check is missing. This could lead to Remote Code Execution via a stack-smashing attack (overwriting the function return address). Contiki-NG does not separate the MQTT server from other servers and the OS modules, so access to all memory regions is possible.

The bug was discovered 07/11/2018. The weakness was presented 11/21/2018 (Website). The advisory is available at github.com. This vulnerability is handled as CVE-2018-19417 since 11/21/2018. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 133 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 4.2 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.1
VulDB Meta Temp Score: 8.9

VulDB Base Score: 8.3
VulDB Temp Score: 7.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 10.0
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Contiki-NG 4.2

Timelineinfo

07/11/2018 🔍
11/21/2018 +133 days 🔍
11/21/2018 +0 days 🔍
11/21/2018 +0 days 🔍
11/22/2018 +1 days 🔍
06/11/2023 +1662 days 🔍

Sourcesinfo

Product: github.com

Advisory: 600
Status: Not defined

CVE: CVE-2018-19417 (🔍)
GCVE (CVE): GCVE-0-2018-19417
GCVE (VulDB): GCVE-100-127058

Entryinfo

Created: 11/22/2018 08:06
Updated: 06/11/2023 09:33
Changes: 11/22/2018 08:06 (58), 04/14/2020 14:13 (1), 06/11/2023 09:33 (4)
Complete: 🔍
Cache ID: 216:486:103

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