libav 12.3 libavcodec/apedec.c range_decode_culshift input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in libav 12.3. The impacted element is the function range_decode_culshift of the file libavcodec/apedec.c. Performing a manipulation results in input validation. This vulnerability is identified as CVE-2018-20001. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in libav 12.3 (Multimedia Player Software). It has been classified as problematic. This affects the function range_decode_culshift of the file libavcodec/apedec.c. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

In Libav 12.3, there is a floating point exception in the range_decode_culshift function (called from range_decode_bits) in libavcodec/apedec.c that will lead to remote denial of service via crafted input.

The bug was discovered 12/09/2018. The weakness was released 12/10/2018 (Website). The advisory is shared at bugzilla.libav.org. This vulnerability is uniquely identified as CVE-2018-20001 since 12/09/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
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: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/09/2018 🔍
12/09/2018 +0 days 🔍
12/09/2018 +0 days 🔍
12/10/2018 +1 days 🔍
12/10/2018 +0 days 🔍
04/19/2020 +496 days 🔍

Sourcesinfo

Advisory: bugzilla.libav.org
Status: Not defined

CVE: CVE-2018-20001 (🔍)
GCVE (CVE): GCVE-0-2018-20001
GCVE (VulDB): GCVE-100-127761

Entryinfo

Created: 12/10/2018 10:46
Updated: 04/19/2020 12:24
Changes: 12/10/2018 10:46 (56), 04/19/2020 12:24 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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