DEBIAN-CVE-2017-11424

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Source
https://security-tracker.debian.org/tracker/CVE-2017-11424
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2017-11424.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2017-11424
Upstream
Published
2017-08-24T16:29:00.197Z
Modified
2025-11-19T01:01:57.911214Z
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"
}

Debian:14 / 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"
}