Dropbox Lepton 1.2.1 Decompression io/ZlibCompression.cc 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 classified as critical has been found in Dropbox Lepton 1.2.1. Affected is an unknown function of the file io/ZlibCompression.cc of the component Decompression Handler. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2018-20819. An attack has to be approached locally. There is no exploit available.

Detailsinfo

A vulnerability was found in Dropbox Lepton 1.2.1 (Cloud Software) and classified as critical. This issue affects some unknown processing of the file io/ZlibCompression.cc of the component Decompression Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

io/ZlibCompression.cc in the decompression component in Dropbox Lepton 1.2.1 allows attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact by crafting a jpg image file. The root cause is a missing check of header payloads that may be (incorrectly) larger than the maximum file size.

The weakness was shared 04/23/2019. The identification of this vulnerability is CVE-2018-20819 since 04/23/2019. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. 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.

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

The entry VDB-133980 is related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/23/2019 🔍
04/23/2019 +0 days 🔍
04/23/2019 +0 days 🔍
09/06/2023 +1597 days 🔍

Sourcesinfo

Advisory: 112
Status: Not defined

CVE: CVE-2018-20819 (🔍)
GCVE (CVE): GCVE-0-2018-20819
GCVE (VulDB): GCVE-100-133979
See also: 🔍

Entryinfo

Created: 04/23/2019 19:31
Updated: 09/06/2023 15:28
Changes: 04/23/2019 19:31 (36), 06/01/2020 14:59 (18), 09/06/2023 15:28 (4)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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