Freeware Advanced Audio Decoder 2.8.8 libfaad/sbr_hfadj.c calculate_gain memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.5$0-$5k0.71

Summaryinfo

A vulnerability identified as critical has been detected in Freeware Advanced Audio Decoder 2.8.8. Affected by this vulnerability is the function calculate_gain of the file libfaad/sbr_hfadj.c. This manipulation causes memory corruption. This vulnerability is registered as CVE-2018-20197. The attack needs to be launched locally. No exploit is available.

Detailsinfo

A vulnerability was found in Freeware Advanced Audio Decoder 2.8.8 (Audio Processing Software). It has been declared as critical. Affected by this vulnerability is the function calculate_gain of the file libfaad/sbr_hfadj.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

There is a stack-based buffer underflow in the third instance of the calculate_gain function in libfaad/sbr_hfadj.c in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8. A crafted input will lead to a denial of service or possibly unspecified other impact because limiting the additional noise energy level is mishandled for the G_max > G case.

The bug was discovered 12/16/2018. The weakness was published 12/18/2018 (Website). It is possible to read the advisory at github.com. This vulnerability is known as CVE-2018-20197 since 12/17/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176933 (Debian Security Update for faad2 (DLA 1791-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entries are available at VDB-128092, VDB-128096 and VDB-128309. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/16/2018 🔍
12/17/2018 +1 days 🔍
12/17/2018 +0 days 🔍
12/18/2018 +1 days 🔍
12/19/2018 +1 days 🔍
06/19/2023 +1643 days 🔍

Sourcesinfo

Advisory: 20
Status: Confirmed

CVE: CVE-2018-20197 (🔍)
GCVE (CVE): GCVE-0-2018-20197
GCVE (VulDB): GCVE-100-128095
See also: 🔍

Entryinfo

Created: 12/19/2018 07:53
Updated: 06/19/2023 19:12
Changes: 12/19/2018 07:53 (61), 04/21/2020 20:23 (1), 06/19/2023 19:05 (3), 06/19/2023 19:12 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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