CVE-2019-3859

MEDIUM

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.

References

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/[email protected]/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/

https://lists.fedoraproject.org/archives/list/[email protected]/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

Details

Source: MITRE

Published: 2019-03-21

Updated: 2019-07-25

Type: CWE-125

Risk Information

CVSS v2.0

Base Score: 6.4

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:P

Impact Score: 4.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 9.1

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

Impact Score: 5.2

Exploitability Score: 3.9

Severity: CRITICAL