SB2018061156 - Buffer overflow in mbedtls (Alpine package)
Published: June 11, 2018
Security Bulletin ID
SB2018061156
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Buffer overflow (CVE-ID: CVE-2018-0487)
CWE-ID: CWE-120 - Buffer overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote unauthenticated attacker to execute arbitrary code on the target system.
The weakness exists due to improper validation of Rivest-Shamir-Adleman Probabilistic Signature Scheme (RSASSA-PSS) signatures. A remote attacker can send a specially crafted certificate chain, which the affected software can mishandle during RSASSA-PSS signature verification, trigger buffer overflow and execute arbitrary code.
Successful exploitation of the vulnerability may result in system compromise.
Remediation
Install update from vendor's website.