Vulnerability CVE-2018-20199

Vulnerability Name:

CVE-2018-20199 (CCN-154412)

Assigned:

2018-12-16

Published:

2018-12-16

Updated:

2022-04-22

Summary:

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 ONLY_LONG_SEQUENCE case.

CVSS v3 Severity:

5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.9 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

3.3 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
2.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:U/RC:R)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Low

CVSS v2 Severity:

4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

Vulnerability Type:

CWE-476

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2018-20199

Source: XF
Type: UNKNOWN
faad2-cve201820199-dos(154412)

Source: CCN
Type: FAAD2 GIT Repository
Null pointer dereference vulnerability in ifilter_bank(libfaad/filtbank.c:223) #24

Source: MISC
Type: Exploit, Third Party Advisory
https://github.com/knik0/faad2/issues/24

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20190828 [SECURITY] [DLA 1899-1] faad2 security update

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20211024 [SECURITY] [DLA 2792-1] faad2 security update

Source: GENTOO
Type: Third Party Advisory
GLSA-202006-17

Source: DEBIAN
Type: Third Party Advisory
DSA-5109

Vulnerable Configuration:

Configuration 1:

cpe:/a:audiocoding:freeware_advanced_audio_decoder_2:*:*:*:*:*:*:*:* (Version < 2.9.0)

Configuration 2:

cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*

OR cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

OR cpe:/o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.disco:def:2018201990000000	V	CVE-2018-20199 on Ubuntu 19.04 (disco) - medium.	2018-12-18
oval:com.ubuntu.bionic:def:2018201990000000	V	CVE-2018-20199 on Ubuntu 18.04 LTS (bionic) - medium.	2018-12-18
oval:com.ubuntu.xenial:def:2018201990000000	V	CVE-2018-20199 on Ubuntu 16.04 LTS (xenial) - medium.	2018-12-18
oval:com.ubuntu.bionic:def:201820199000	V	CVE-2018-20199 on Ubuntu 18.04 LTS (bionic) - medium.	2018-12-17
oval:com.ubuntu.cosmic:def:2018201990000000	V	CVE-2018-20199 on Ubuntu 18.10 (cosmic) - medium.	2018-12-17
oval:com.ubuntu.cosmic:def:201820199000	V	CVE-2018-20199 on Ubuntu 18.10 (cosmic) - medium.	2018-12-17
oval:com.ubuntu.trusty:def:201820199000	V	CVE-2018-20199 on Ubuntu 14.04 LTS (trusty) - medium.	2018-12-17
oval:com.ubuntu.xenial:def:201820199000	V	CVE-2018-20199 on Ubuntu 16.04 LTS (xenial) - medium.	2018-12-17

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