CVE-2017-6542: Buffer Overflow
First published: Mon Mar 27 2017(Updated: )
The ssh_agent_channel_data function in PuTTY before 0.68 allows remote attackers to have unspecified impact via a large length value in an agent protocol message and leveraging the ability to connect to the Unix-domain socket representing the forwarded agent connection, which trigger a buffer overflow.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| PuTTY | <=0.67 | |
| SUSE Linux | =42.2 | |
| openSUSE Leap | =42.1 |
Remedy
https://git.tartarus.org/?p=simon/putty.git;a=commitdiff;h=4ff22863d895cb7ebfced4cf923a012a614adaa8
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Reference Links
- http://lists.opensuse.org/opensuse-updates/2017-03/msg00055.html
- http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-agent-fwd-overflow.html
- http://www.securityfocus.com/bid/97156
- http://www.securitytracker.com/id/1038067
- https://git.tartarus.org/?p=simon/putty.git;a=commitdiff;h=4ff22863d895cb7ebfced4cf923a012a614adaa8
- https://security.gentoo.org/glsa/201703-03
- https://security.gentoo.org/glsa/201706-09
- https://www.exploit-db.com/exploits/42137/
Frequently Asked Questions
What is the severity of CVE-2017-6542?
CVE-2017-6542 is considered a high-severity vulnerability due to its potential for remote code execution.
How do I fix CVE-2017-6542?
To mitigate CVE-2017-6542, upgrade to PuTTY version 0.68 or later.
What software is affected by CVE-2017-6542?
CVE-2017-6542 affects PuTTY versions prior to 0.68 and specific versions of openSUSE Leap.
Can CVE-2017-6542 be exploited remotely?
Yes, CVE-2017-6542 can be exploited remotely if an attacker can connect to the Unix-domain socket of the forwarded agent.
What kind of attack does CVE-2017-6542 enable?
CVE-2017-6542 enables a buffer overflow attack that can lead to various unspecified impacts on the affected systems.
- agent/references
- agent/type
- agent/first-publish-date
- agent/last-modified-date
- agent/remedy
- agent/weakness
- agent/severity
- agent/author
- agent/description
- agent/event
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/putty
- canonical/putty
- version/putty/0.67
- vendor/opensuse
- canonical/suse linux
- version/suse linux/42.2
- vendor/opensuse project
- canonical/opensuse leap
- version/opensuse leap/42.1