Bug 1431716 (CVE-2017-6542)

Summary: CVE-2017-6542 putty: Integer overflow in the ssh_agent_channel_data
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: carnil, fedora, jskarvad, olysonek, sardella, tremble
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: putty 0.68 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-08 03:08:56 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1431718, 1431719, 1431720    
Bug Blocks:    

Description Andrej Nemec 2017-03-13 16:14:12 UTC
It was found that putty is vulnerable to an integer overflow. An attacker could overwrite the heap data with his own if the system has SSH agent forwarding and he is able to connect to the Unix-domain socket representing the forwarded agent connection.

Upstream patch:




Comment 1 Andrej Nemec 2017-03-13 16:14:53 UTC
Created putty tracking bugs for this issue:

Affects: epel-5 [bug 1431718]
Affects: epel-6 [bug 1431719]
Affects: fedora-all [bug 1431720]

Comment 2 Product Security DevOps Team 2019-06-08 03:08:56 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.