tar-fs up to 1.16.1 Tarball input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in tar-fs up to 1.16.1. The impacted element is an unknown function of the component Tarball Handler. Such manipulation leads to input validation. This vulnerability is referenced as CVE-2018-20835. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in tar-fs up to 1.16.1 and classified as critical. Affected by this issue is an unknown functionality of the component Tarball Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity, and availability. CVE summarizes:

A vulnerability was found in tar-fs before 1.16.2. An Arbitrary File Overwrite issue exists when extracting a tarball containing a hardlink to a file that already exists on the system, in conjunction with a later plain file with the same name as the hardlink. This plain file content replaces the existing file content.

The weakness was published 04/30/2019. This vulnerability is handled as CVE-2018-20835 since 04/30/2019. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 1.16.2 eliminates this vulnerability.

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Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.8

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: tar-fs 1.16.2
Patch: github.com

Timelineinfo

04/30/2019 🔍
04/30/2019 +0 days 🔍
04/30/2019 +0 days 🔍
09/11/2023 +1595 days 🔍

Sourcesinfo

Advisory: 06672828e6fa29ac8551b1b6f36c852a9a3c58a2
Status: Not defined

CVE: CVE-2018-20835 (🔍)
GCVE (CVE): GCVE-0-2018-20835
GCVE (VulDB): GCVE-100-134240

Entryinfo

Created: 04/30/2019 23:07
Updated: 09/11/2023 09:29
Changes: 04/30/2019 23:07 (37), 06/05/2020 07:01 (17), 09/11/2023 09:29 (6)
Complete: 🔍
Cache ID: 216::103

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