PT-2018-6718 · Arm+2 · Mbed Tls+2

Published 2018-02-14 · Updated 2020-02-10 · CVE-2017-18187

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: mbed TLS versions prior to 2.7.0

Description: The issue is related to a bounds-check bypass through an integer overflow in PSK identity parsing. This occurs in the ssl parse client psk identity() function, located in library/ssl srv.c.

Recommendations: For versions prior to 2.7.0, update to version 2.7.0 or later to resolve the issue.

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

ALT-PU-2018-1396

CVE-2017-18187

DSA-4138-1

DSA-4147-1

OPENSUSE-SU-2018:0488-1

OPENSUSE-SU-2018:0491-1

USN-4267-1

Affected Products

Alt Linux

Ubuntu

Mbed Tls

References · 32

• https://github.com/ARMmbed/mbedtls/commit/83c9f495ffe70c7dd280b41fdfd4881485a3bc28 · Patch
• https://cve.org/CVERecord?id=CVE-2017-18187 · Security Note
• https://usn.ubuntu.com/4267-1 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2017-18187 · Vendor Advisory
• https://security.gentoo.org/glsa/201804-19 · Vendor Advisory
• https://debian.org/security/2018/dsa-4147 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-0497 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-0488 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-18187 · Security Note
• https://osv.dev/vulnerability/DSA-4147-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2018:0491-1 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4138-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-18187 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2018:0488-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2017-18187 · Vendor Advisory