VDB-132145 · CVE-2019-9970 · BID 107550

Open Whisper Signal/Signal Private Messenger on Android Cyrillic Character input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Open Whisper Signal and Signal Private Messenger on Android. This affects an unknown part. This manipulation as part of Cyrillic Character causes input validation. This vulnerability is registered as CVE-2019-9970. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Open Whisper Signal and Signal Private Messenger on Android (Messaging Software) (version now known). It has been declared as critical. Affected by this vulnerability is some unknown processing. The manipulation as part of a Cyrillic Character leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Open Whisper Signal (aka Signal-Desktop) through 1.23.1 and the Signal Private Messenger application through 4.35.3 for Android are vulnerable to an IDN homograph attack when displaying messages containing URLs. This occurs because the application produces a clickable link even if (for example) Latin and Cyrillic characters exist in the same domain name, and the available font has an identical representation of characters from different alphabets.

The bug was discovered 03/24/2019. The weakness was published 03/24/2019 (Website). The advisory is shared at securityfocus.com. This vulnerability is known as CVE-2019-9970 since 03/23/2019. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

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

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Productinfo

Type

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
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

03/23/2019 🔍
03/24/2019 +1 days 🔍
03/24/2019 +0 days 🔍
03/24/2019 +0 days 🔍
08/04/2023 +1594 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Status: Not defined

CVE: CVE-2019-9970 (🔍)
GCVE (CVE): GCVE-0-2019-9970
GCVE (VulDB): GCVE-100-132145
SecurityFocus: 107550

scip Labs: https://www.scip.ch/en/?labs.20130704

Entryinfo

Created: 03/24/2019 12:06
Updated: 08/04/2023 17:46
Changes: 03/24/2019 12:06 (53), 05/19/2020 15:01 (2), 08/04/2023 17:46 (3)
Complete: 🔍
Cache ID: 216::103

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

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