libjpeg blockbitmaprequester.cpp ReconstructUnsampled null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in libjpeg. This affects the function BlockBitmapRequester::ReconstructUnsampled of the file blockbitmaprequester.cpp. Such manipulation leads to null pointer dereference. This vulnerability is referenced as CVE-2021-39517. No exploit is available.

Detailsinfo

A vulnerability was found in libjpeg (unknown version) and classified as problematic. Affected by this issue is the function BlockBitmapRequester::ReconstructUnsampled of the file blockbitmaprequester.cpp. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability.

The weakness was published 09/21/2021 as 33. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2021-39517 since 08/23/2021. There are known technical details, 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.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 5.0

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
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: Null pointer dereference
CWE: CWE-476 / CWE-404
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

08/23/2021 🔍
09/21/2021 +29 days 🔍
09/21/2021 +0 days 🔍
09/29/2021 +8 days 🔍

Sourcesinfo

Advisory: 33
Status: Confirmed

CVE: CVE-2021-39517 (🔍)
GCVE (CVE): GCVE-0-2021-39517
GCVE (VulDB): GCVE-100-183020

Entryinfo

Created: 09/21/2021 09:31
Updated: 09/29/2021 20:19
Changes: 09/21/2021 09:31 (37), 09/29/2021 20:11 (1), 09/29/2021 20:19 (18)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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