SB2018061155 - Security restrictions bypass in mbedtls (Alpine package)
Published: June 11, 2018
Security Bulletin ID
SB2018061155
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Security restrictions bypass (CVE-ID: CVE-2017-18187)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to integer overflow in PSK identity parsing in the ssl_parse_client_psk_identity() function in library/ssl_srv.c. A remote attacker can trigger memory corruption and bypass bounds-check.
Remediation
Install update from vendor's website.