Wire on Android AssetService.scala path traversal

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Wire on Android. It has been declared as critical. This issue affects some unknown processing of the file AssetService.scala. Such manipulation with the input ../ leads to path traversal. This vulnerability is uniquely identified as CVE-2018-8909. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Wire on Android (Android App Software) (version now known). Affected by this issue is some unknown processing of the file AssetService.scala. The manipulation with the input value ../ leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, and integrity. CVE summarizes:

The Wire application before 2018-03-07 for Android allows attackers to write to pathnames outside of the downloads directory via a ../ in a filename of a received file, related to AssetService.scala.

The bug was discovered 03/07/2018. The weakness was disclosed 03/22/2018 (Website). The advisory is shared for download at x41-dsec.de. This vulnerability is handled as CVE-2018-8909 since 03/22/2018. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

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: Path traversal
CWE: CWE-22
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: 🔍

Timelineinfo

03/07/2018 🔍
03/07/2018 +0 days 🔍
03/22/2018 +15 days 🔍
03/22/2018 +0 days 🔍
03/22/2018 +0 days 🔍
03/23/2018 +1 days 🔍
01/16/2020 +664 days 🔍

Sourcesinfo

Advisory: x41-dsec.de
Status: Not defined

CVE: CVE-2018-8909 (🔍)
GCVE (CVE): GCVE-0-2018-8909
GCVE (VulDB): GCVE-100-114932
scip Labs: https://www.scip.ch/en/?labs.20130704

Entryinfo

Created: 03/23/2018 10:08
Updated: 01/16/2020 07:51
Changes: 03/23/2018 10:08 (58), 01/16/2020 07:51 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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