Bug 1388371 (CVE-2016-8616)

Summary: CVE-2016-8616 curl: Case insensitive password comparison
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: bmcclain, cfergeau, csutherl, dblechte, dominik.mierzejewski, eedri, erik-fedora, gzaronik, jclere, kdudka, lgao, lsurette, mbabacek, mgoldboi, michal.skrivanek, mike, mturk, myarboro, omajid, paul, rh-spice-bugs, sardella, security-response-team, sherold, slawomir, srevivo, twalsh, weli, ykaul
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: curl 7.51.0 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-08 03:00:52 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1390894, 1390895, 1390896    
Bug Blocks: 1388393    
Attachments:
Description Flags
Upstream patch none

Description Andrej Nemec 2016-10-25 08:13:35 UTC 
When re-using a connection, curl was doing case insensitive comparisons of
user name and password with the existing connections.

This means that if an unused connection with proper credentials exists for a
protocol that has connection-scoped credentials, an attacker can cause that
connection to be reused if s/he knows the case-insensitive version of the
correct password.

External References:

https://curl.haxx.se/docs/adv_20161102B.html
Comment 1 Andrej Nemec 2016-10-25 08:53:33 UTC 
Created attachment 1213770 [details]
Upstream patch
Comment 2 Adam Mariš 2016-11-02 08:26:06 UTC 
Created curl tracking bugs for this issue:

Affects: fedora-all [bug 1390894]
Comment 3 Adam Mariš 2016-11-02 08:26:19 UTC 
Created mingw-curl tracking bugs for this issue:

Affects: fedora-all [bug 1390895]
Affects: epel-7 [bug 1390896]
Comment 4 Stefan Cornelius 2016-11-02 10:50:38 UTC 
I want to point out again that this is only a problem if the attacker already knows a case-insensitive version of the password, which is a bigger problem in itself.
Comment 7 errata-xmlrpc 2018-08-16 16:06:56 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Core Services

Via RHSA-2018:2486 https://access.redhat.com/errata/RHSA-2018:2486
Comment 8 errata-xmlrpc 2018-11-13 08:32:45 UTC 
This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 6
  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS

Via RHSA-2018:3558 https://access.redhat.com/errata/RHSA-2018:3558