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GoogleOSV:GO-2022-0402

HistoryJul 01, 2022 - 8:10 p.m.

Panic in NATS JWT decoding in github.com/nats-io/jwt

2022-07-0120:10:43

Google

osv.dev

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.5 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

48.6%

JSON

A malicious account can create and sign a User JWT which causes a panic when decoded by the NATS JWT library.

CPENameOperatorVersion
github.com/nats-io/jwtlt1.1.0

CPE	Name	Operator	Version
	github.com/nats-io/jwt	lt	1.1.0

References

advisories.nats.io/CVE/CVE-2020-26521.txt

github.com/nats-io/jwt/pull/107

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.5 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

48.6%

JSON

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