CVE-2019-3859 Information

Description

An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the _libssh2_packet_require and _libssh2_packet_requirev functions. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.

CVSS Vector

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

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00102.html http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00103.html http://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.html http://www.openwall.com/lists/oss-security/2019/03/18/3 http://www.securityfocus.com/bid/107485 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3859 https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html https://lists.debian.org/debian-lts-announce/2019/04/msg00006.html https://lists.debian.org/debian-lts-announce/2019/07/msg00024.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XCWEA5ZCLKRDUK62QVVYMFWLWKOPX3LO/ https://seclists.org/bugtraq/2019/Apr/25 https://seclists.org/bugtraq/2019/Mar/25 https://security.netapp.com/advisory/ntap-20190327-0005/ https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-767 https://www.debian.org/security/2019/dsa-4431 https://www.libssh2.org/CVE-2019-3859.html https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

HIGH

Base Severity

9.1