SB2018051405 - Denial of service in ARM mbed TLS

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Main Vulnerability Database SB2018051405

SB2018051405 - Denial of service in ARM mbed TLS

Published: May 14, 2018

Security Bulletin ID SB2018051405
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Buffer over-read (CVE-ID: CVE-2018-9988)

CWE-ID: CWE-126 - Buffer over-read

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in ssl_parse_server_key_exchange() due to buffer over-read. A remote attacker can trigger memory corruption and cause the service to crash.


2) Buffer over-read (CVE-ID: CVE-2018-9989)

CWE-ID: CWE-126 - Buffer over-read

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in ssl_parse_server_psk_hint() due to buffer over-read. A remote attacker can trigger memory corruption and cause the service to crash.


Remediation

Install update from vendor's website.

References