USN-2672-1

See a problem?
Source
https://ubuntu.com/security/notices/USN-2672-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/USN-2672-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-2672-1
Related
  • CVE-2015-2721
  • CVE-2015-2730
Published
2015-07-09T17:32:22.596376Z
Modified
2015-07-09T17:32:22.596376Z
Summary
nss vulnerabilities
Details

Karthikeyan Bhargavan discovered that NSS incorrectly handled state transitions for the TLS state machine. If a remote attacker were able to perform a machine-in-the-middle attack, this flaw could be exploited to skip the ServerKeyExchange message and remove the forward-secrecy property. (CVE-2015-2721)

Watson Ladd discovered that NSS incorrectly handled Elliptical Curve Cryptography (ECC) multiplication. A remote attacker could possibly use this issue to spoof ECDSA signatures. (CVE-2015-2730)

As a security improvement, this update modifies NSS behaviour to reject DH key sizes below 768 bits, preventing a possible downgrade attack.

This update also refreshes the NSS package to version 3.19.2 which includes the latest CA certificate bundle.

References

Affected packages

Ubuntu:14.04:LTS / nss

Package

Name
nss

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:3.19.2-0ubuntu0.14.04.1

Ecosystem specific

{
    "availability": "No subscription needed",
    "binaries": [
        {
            "libnss3-1d": "2:3.19.2-0ubuntu0.14.04.1",
            "libnss3-tools": "2:3.19.2-0ubuntu0.14.04.1",
            "libnss3": "2:3.19.2-0ubuntu0.14.04.1",
            "libnss3-dev": "2:3.19.2-0ubuntu0.14.04.1",
            "libnss3-nssdb": "2:3.19.2-0ubuntu0.14.04.1"
        }
    ]
}