NATS nats-server up to 2.1.8 JWT Library null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in NATS nats-server up to 2.1.8. The affected element is an unknown function of the component JWT Library. Performing a manipulation results in null pointer dereference. This vulnerability is known as CVE-2020-26521. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in NATS nats-server up to 2.1.8. It has been classified as problematic. This affects an unknown functionality of the component JWT Library. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability.

The weakness was published 11/06/2020. The advisory is shared at openwall.com. This vulnerability is uniquely identified as CVE-2020-26521. Neither technical details nor an exploit are publicly available.

Upgrading to version 2.1.9 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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: nats-server 2.1.9

Timelineinfo

10/02/2020 🔍
11/06/2020 +35 days 🔍
11/06/2020 +0 days 🔍
12/03/2020 +27 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-26521 (🔍)
GCVE (CVE): GCVE-0-2020-26521
GCVE (VulDB): GCVE-100-164445

Entryinfo

Created: 11/06/2020 17:36
Updated: 12/03/2020 11:19
Changes: 11/06/2020 17:36 (38), 12/03/2020 11:14 (3), 12/03/2020 11:19 (18)
Complete: 🔍
Cache ID: 216::103

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