This update for mbedtls fixes the following issues:
CVE-2018-0487: Fixed a buffer overflow in RSASSA-PSS signature
verification, which allowed remote attackers to execute arbitrary code or
cause a denial of service via a crafted certificate chain. (boo#1080826)
CVE-2018-0488: Fixed a heap vulnerability, which allowed remote
attackers to execute arbitrary code or cause a DoS via a crafted application
packet when the truncated HMAC extension and CBC are used. (boo#1080828)
CVE-2017-18187: Fixed bound check in sslparseclientpskidentity(), which
might lead to an overflow. (boo#1080973)