Bug 750636 (CVE-2011-4092) - CVE-2011-4092 obby: does not validate SSL connections which can lead to MITM attacks
Summary: CVE-2011-4092 obby: does not validate SSL connections which can lead to MITM ...
Alias: CVE-2011-4092
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 750641 750642
TreeView+ depends on / blocked
Reported: 2011-11-01 20:33 UTC by Vincent Danen
Modified: 2019-09-29 12:48 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2019-06-10 10:58:11 UTC

Attachments (Terms of Use)

Description Vincent Danen 2011-11-01 20:33:38 UTC
Vasiliy Kulikov reported [1] that obby does not check a server's SSL certificate when connecting.  It also sends the password in plaintext form over the SSL channel.  An attacker able to perform a MITM attack on the connection could easily do so without discovery due to obby not checking the server's SSL certificate.

Note: if the client is Gobby, the reconnection attempt will require user interaction.

Upstream has indicated [2] that it is not worth the effort to implement SSL certificate checking in obby as it is deprecated by libinfinity, which is used by the development version of Gobby, so there is currently no fix for obby.

[1] http://www.openwall.com/lists/oss-security/2011/10/30/3
[2] http://www.openwall.com/lists/oss-security/2011/10/30/5

Comment 1 Vincent Danen 2011-11-01 20:51:35 UTC
Created obby tracking bugs for this issue

Affects: fedora-all [bug 750641]
Affects: epel-all [bug 750642]

Comment 2 Product Security DevOps Team 2019-06-10 10:58:11 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.

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