CVE-2017-3731 Information

Description

If an SSL/TLS server or client is running on a 32-bit host and a specific cipher is being used then a truncated packet can cause that server or client to perform an out-of-bounds read usually resulting in a crash. For OpenSSL 1.1.0 the crash can be triggered when using CHACHA20/POLY1305; users should upgrade to 1.1.0d. For Openssl 1.0.2 the crash can be triggered when using RC4-MD5; users who have not disabled that algorithm should update to 1.0.2k.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://rhn.redhat.com/errata/RHSA-2017-0286.html http://www.debian.org/security/2017/dsa-3773 http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html http://www.securityfocus.com/bid/95813 http://www.securitytracker.com/id/1037717 https://access.redhat.com/errata/RHSA-2018:2185 https://access.redhat.com/errata/RHSA-2018:2186 https://access.redhat.com/errata/RHSA-2018:2187 https://github.com/openssl/openssl/commit/00d965474b22b54e4275232bc71ee0c699c5cd21 https://security.FreeBSD.org/advisories/FreeBSD-SA-17:02.openssl.asc https://security.gentoo.org/glsa/201702-07 https://security.netapp.com/advisory/ntap-20171019-0002/ https://security.paloaltonetworks.com/CVE-2017-3731 https://source.android.com/security/bulletin/pixel/2017-11-01 https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03838en_us https://www.openssl.org/news/secadv/20170126.txt https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html https://www.tenable.com/security/tns-2017-04

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5