Out-of-Bounds Affecting putty package, versions <0.67-3build0.16.04.1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1604-PUTTY-351017
- published27 Mar 2017
- disclosed27 Mar 2017
Introduced: 27 Mar 2017
CVE-2017-6542 (opens in a new tab)How to fix?
Upgrade Ubuntu:16.04 putty to version 0.67-3build0.16.04.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream putty package and not the putty package as distributed by Ubuntu.
See How to fix? for Ubuntu:16.04 relevant fixed versions and status.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-6542
- https://git.tartarus.org/?p=simon/putty.git;a=commitdiff;h=4ff22863d895cb7ebfced4cf923a012a614adaa8
- http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-agent-fwd-overflow.html
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-6542
- https://security-tracker.debian.org/tracker/CVE-2017-6542
- https://www.exploit-db.com/exploits/42137/
- https://security.gentoo.org/glsa/201703-03
- https://security.gentoo.org/glsa/201706-09
- http://lists.opensuse.org/opensuse-updates/2017-03/msg00055.html
- http://www.securityfocus.com/bid/97156
- http://www.securitytracker.com/id/1038067
- https://git.tartarus.org/?p=simon/putty.git%3Ba=commitdiff%3Bh=4ff22863d895cb7ebfced4cf923a012a614adaa8
- https://www.exploit-db.com/exploits/42137