- Vulnerability/
- USN-3431-1
USN-3431-1: NSS vulnerability
First published: Mon Oct 02 2017(Updated: )
Martin Thomson discovered that NSS incorrectly generated handshake hashes. A remote attacker could use this issue to cause NSS to crash, resulting in a denial of service, or possibly execute arbitrary code.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/libnss3 | <2:3.28.4-0ubuntu0.17.04.3 | 2:3.28.4-0ubuntu0.17.04.3 |
| =17.04 | ||
| All of | ||
| ubuntu/libnss3 | <2:3.28.4-0ubuntu0.16.04.3 | 2:3.28.4-0ubuntu0.16.04.3 |
| =16.04 | ||
| All of | ||
| ubuntu/libnss3 | <2:3.28.4-0ubuntu0.14.04.3 | 2:3.28.4-0ubuntu0.14.04.3 |
| =14.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2017-7805
- https://ubuntu.com/security/notices/USN-3436-1
- https://ubuntu.com/security/notices/USN-3435-1
- https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.17.04.3
- https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.16.04.3
- https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.14.04.3
- https://ubuntu.com/security/notices/USN-3431-1 (Advisory)
Frequently Asked Questions
What is the vulnerability ID for this NSS vulnerability?
The vulnerability ID for this NSS vulnerability is CVE-2017-7805.
What is the severity of NSS CVE-2017-7805 vulnerability?
The severity of NSS CVE-2017-7805 vulnerability is high.
How does an attacker exploit CVE-2017-7805?
An attacker can exploit CVE-2017-7805 by generating malformed handshake packets.
How can I fix the NSS CVE-2017-7805 vulnerability?
To fix the NSS CVE-2017-7805 vulnerability, update the libnss3 package to version 2:3.28.4-0ubuntu0.17.04.3 (for Ubuntu 17.04), 2:3.28.4-0ubuntu0.16.04.3 (for Ubuntu 16.04), or 2:3.28.4-0ubuntu0.14.04.3 (for Ubuntu 14.04).
Where can I find more information about the NSS vulnerability?
You can find more information about the NSS vulnerability at the following references: [1](https://ubuntu.com/security/CVE-2017-7805), [2](https://ubuntu.com/security/notices/USN-3436-1), [3](https://ubuntu.com/security/notices/USN-3435-1).
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