CVE-2017-11424

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Source
https://nvd.nist.gov/vuln/detail/CVE-2017-11424
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-11424.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2017-11424
Aliases
Related
Published
2017-08-24T16:29:00Z
Modified
2025-01-14T06:59:33.709902Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
[none]
Details

In PyJWT 1.5.0 and below the invalid_strings check in HMACAlgorithm.prepare_key does not account for all PEM encoded public keys. Specifically, the PKCS1 PEM encoded format would be allowed because it is prefaced with the string -----BEGIN RSA PUBLIC KEY----- which is not accounted for. This enables symmetric/asymmetric key confusion attacks against users using the PKCS1 PEM encoded public keys, which would allow an attacker to craft JWTs from scratch.

References

Affected packages

Debian:11 / pyjwt

Package

Name
pyjwt
Purl
pkg:deb/debian/pyjwt?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.4.2-1.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / pyjwt

Package

Name
pyjwt
Purl
pkg:deb/debian/pyjwt?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.4.2-1.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / pyjwt

Package

Name
pyjwt
Purl
pkg:deb/debian/pyjwt?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.4.2-1.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Git / github.com/jpadilla/pyjwt

Affected ranges

Type
GIT
Repo
https://github.com/jpadilla/pyjwt
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
908ee84aeefb8126a94e48e88ba9916d9d2512b3

Affected versions

0.*

0.1.6
0.1.9
0.2.0
0.2.2
0.2.3
0.3.0
0.3.1
0.3.2
0.4.0
0.4.1
0.4.2
0.4.3

1.*

1.0.0
1.0.1
1.1.0
1.2.0
1.3.0
1.4.0
1.4.1
1.4.2
1.5.0