CVE-2017-11697

Publication date 27 December 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

The __hash_open function in hash.c:229 in Mozilla Network Security Services (NSS) allows context-dependent attackers to cause a denial of service (floating point exception and crash) via a crafted cert8.db file.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
nss	23.04 lunar	Not affected
	22.10 kinetic	Not affected
	22.04 LTS jammy	Not affected
	21.10 impish	Not affected
	21.04 hirsute	Not affected
	20.10 groovy	Not affected
	20.04 LTS focal	Not affected
	19.10 eoan	Ignored end of life
	19.04 disco	Ignored end of life
	18.10 cosmic	Ignored end of life
	18.04 LTS bionic	Ignored
	17.10 artful	Ignored end of life
	17.04 zesty	Ignored end of life
	16.04 LTS xenial	Ignored end of standard support, was deferred
	14.04 LTS trusty	Ignored end of standard support

Notes

mdeslaur

Upstream NSS will not be fixing this issue. this is an issue in libnssdbm. NSS 3.35 made SQLite the default datastore. NSS 3.49 stopped building the legacy datastore.

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.8 · High

Base metrics

Parameter	Value
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality impact	High
Integrity impact	High
Availability impact	High

Scores

Parameter	Value
Base score	7.8 · High
Exploitability score	-
Impact score	-

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