Bugzilla will be upgraded to version 5.0. The upgrade date is tentatively scheduled for 2 December 2018, pending final testing and feedback.
First Last Prev Next    This bug is not in your last search results.
Bug 1482529 - (CVE-2017-11424) CVE-2017-11424 python-jwt: Incorrect handling of PEM-encoded public keys
CVE-2017-11424 python-jwt: Incorrect handling of PEM-encoded public keys
Status: CLOSED WONTFIX
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
: ---
: ---
Assigned To: Red Hat Product Security
impact=moderate,public=20170622,repor...
: Security
Depends On: 1482530 1482531 1483435 1526430
Blocks: 1482533
  Show dependency tree / graph
 
Reported: 2017-08-17 09:27 EDT by Adam Mariš
Modified: 2017-12-19 08:31 EST (History)
7 users (show)

See Also:
Fixed In Version: python-jwt 1.5.1
Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed: 2017-12-19 08:31:16 EST
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

  None (edit)
Description Adam Mariš 2017-08-17 09:27:42 EDT 
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.

Upstream bug:

https://github.com/jpadilla/pyjwt/pull/277
Comment 1 Adam Mariš 2017-08-17 09:27:59 EDT 
Created python-jwt tracking bugs for this issue:

Affects: epel-7 [bug 1482530]
Affects: fedora-all [bug 1482531]
Comment 3 Adam Mariš 2017-08-25 04:17:31 EDT 
CVE-2017-12880 was rejected in favour of CVE-2017-11424.
Comment 4 Siddharth Sharma 2017-10-08 23:49:38 EDT 
Analysis:

Python-jwt is shipped as dependency for heketi in Red Hat Gluster Storage 3. Heketi only uses token signatures (used algorithm HMAC HS256). Python-jwt is affected by this CVE but it does not affect Red Hat Gluster Storage 3 in the way it is being used.
Note You need to log in before you can comment on or make changes to this bug.
First Last Prev Next    This bug is not in your last search results.