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CVE-2019-18800 Detail

Current Description

Viber through 11.7.0.5 allows a remote attacker who can capture a victim's internet traffic to steal their Viber account, because not all Viber protocol traffic is encrypted. TCP data packet 9 on port 4244 from the victim's device contains cleartext information such as the device model and OS version, IMSI, and 20 bytes of udid in a binary format, which is located at offset 0x14 of this packet. Then, the attacker installs Viber on his device, initiates the registration process for any phone number, but doesn't enter a pin from SMS. Instead, he closes Viber. Next, the attacker rewrites his udid with the victim's udid, modifying the viber_udid file, which is located in the Viber preferences folder. (The udid is stored in a hexadecimal format.) Finally, the attacker starts Viber again and enters the pin from SMS.


View Analysis Description

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://thesamarkand.tumblr.com/post/188785277609/viber-messenger-remote-account-reset-0day Exploit  Third Party Advisory 
https://thesamarkand.tumblr.com/post/188785277609/viber-messenger-remote-account-reset-0day Exploit  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-311 Missing Encryption of Sensitive Data cwe source acceptance level NIST  
CWE-319 Cleartext Transmission of Sensitive Information cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-18800
NVD Published Date:
11/06/2019
NVD Last Modified:
11/20/2024
Source:
MITRE