CVE-2018-20198
Published: 18 December 2018
A NULL pointer dereference was discovered in ifilter_bank of libfaad/filtbank.c in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8. The vulnerability causes a segmentation fault and application crash, which leads to denial of service because adding to windowed output is mishandled in the LONG_START_SEQUENCE case.
From the Ubuntu Security Team
It was discovered that Freeware Advanced Audio Decoder 2 incorrectly handled implicit channel mapping reconfiguration when processing crafted AAC files. An attacker could possibly use this issue to cause a denial of service.
Notes
Author | Note |
---|---|
danielwang | same underlying issue as CVE-2018-20362, same fix |
Priority
Status
Package | Release | Status |
---|---|---|
faad2 Launchpad, Ubuntu, Debian |
bionic |
Needed
|
cosmic |
Ignored
(end of life)
|
|
disco |
Ignored
(end of life)
|
|
eoan |
Not vulnerable
(2.8.8-3ubuntu3)
|
|
focal |
Not vulnerable
(2.8.8-3ubuntu3)
|
|
upstream |
Needs triage
|
|
xenial |
Needed
|
|
groovy |
Not vulnerable
(2.8.8-3ubuntu3)
|
|
jammy |
Not vulnerable
(2.8.8-3ubuntu3)
|
|
kinetic |
Not vulnerable
(2.8.8-3ubuntu3)
|
|
hirsute |
Not vulnerable
(2.8.8-3ubuntu3)
|
|
impish |
Not vulnerable
(2.8.8-3ubuntu3)
|
|
lunar |
Not vulnerable
(2.8.8-3ubuntu3)
|
|
trusty |
Released
(2.7-8+deb8u3build0.14.04.1~esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
mantic |
Not vulnerable
(2.8.8-3ubuntu3)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.5 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | None |
User interaction | Required |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |