Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : nss vulnerabilities (USN-3850-1)

Medium Nessus Plugin ID 121062

Synopsis

The remote Ubuntu host is missing a security-related patch.

Description

Keegan Ryan discovered that NSS incorrectly handled ECDSA key generation. A local attacker could possibly use this issue to perform a cache-timing attack and recover private ECDSA keys. (CVE-2018-0495)

It was discovered that NSS incorrectly handled certain v2-compatible ClientHello messages. A remote attacker could possibly use this issue to perform a replay attack. (CVE-2018-12384)

It was discovered that NSS incorrectly handled certain padding oracles. A remote attacker could possibly use this issue to perform a variant of the Bleichenbacher attack. (CVE-2018-12404).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected libnss3 package.

See Also

https://usn.ubuntu.com/3850-1/

Plugin Details

Severity: Medium

ID: 121062

File Name: ubuntu_USN-3850-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2019/01/10

Updated: 2019/09/18

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS v3.0

Base Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libnss3, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.10

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Patch Publication Date: 2019/01/09

Vulnerability Publication Date: 2018/06/13

Reference Information

CVE: CVE-2018-0495, CVE-2018-12384, CVE-2018-12404

USN: 3850-1