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-$5k0.00

Summaryinfo

A vulnerability was found in Freeware Advanced Audio Decoder 2.8.8. It has been declared as critical. This affects the function calculate_gain of the file libfaad/sbr_hfadj.c. Executing a manipulation can lead to memory corruption. This vulnerability is tracked as CVE-2018-20194. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability has been found in Freeware Advanced Audio Decoder 2.8.8 (Audio Processing Software) and classified as critical. This vulnerability affects 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. CVE summarizes:

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 disclosed 12/18/2018 (Website). The advisory is shared for download at github.com. This vulnerability was named CVE-2018-20194 since 12/17/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

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.

The entries VDB-128095, VDB-128096 and VDB-128309 are pretty similar. Once again VulDB remains the best 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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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: 21
Status: Confirmed

CVE: CVE-2018-20194 (🔍)
GCVE (CVE): GCVE-0-2018-20194
GCVE (VulDB): GCVE-100-128092
See also: 🔍

Entryinfo

Created: 12/19/2018 07:51
Updated: 06/19/2023 18:34
Changes: 12/19/2018 07:51 (61), 04/21/2020 18:56 (1), 06/19/2023 18:26 (3), 06/19/2023 18:34 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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