CVE-2019-17498

CVSS V2 Medium 5.8 CVSS V3 High 8.1

Description

In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.

Overview

CVE ID
CVE-2019-17498

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2019-10-21T22:15:10

Last Modified Date
2022-10-27T21:08:32

Weakness Enumerations

CWE	URL
CWE-190	http://cwe.mitre.org/data/definitions/190.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version End
		AND
cpe:2.3:a:libssh2:libssh2::::::::	1	OR	1.9.0
		AND
cpe:2.3:o:fedoraproject:fedora:30:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:31:::::::*	1	OR
		AND
cpe:2.3:o:opensuse:leap:15.1:::::::*	1	OR
		AND
cpe:2.3:o:debian:debian_linux:8.0:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:9.0:::::::*	1	OR
		AND
cpe:2.3:a:netapp:active_iq_unified_manager:-:::::vmware_vsphere::	1	OR
cpe:2.3:a:netapp:element_software:-:::::::*	1	OR
cpe:2.3:a:netapp:hci_management_node:-:::::::*	1	OR
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:::::::*	1	OR
cpe:2.3:a:netapp:solidfire:-:::::::*	1	OR
		AND
cpe:2.3:o:netapp:bootstrap_os:-:::::::*	1	OR
cpe:2.3:h:netapp:hci_compute_node:-:::::::*	0	OR

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:M/Au:N/C:P/I:N/A:P

Access Vector
NETWORK

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
NONE

Availability Impact
PARTIAL

Base Score
5.8

Severity
MEDIUM

Exploitability Score
8.6

Impact Score
4.9

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
REQUIRED

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
8.1

Base Severity
HIGH

Exploitability Score
2.8

Impact Score
5.2

References

Reference URL	Reference Tags
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00026.html	Mailing List Third Party Advisory
https://blog.semmle.com/libssh2-integer-overflow-CVE-2019-17498/	Broken Link
https://github.com/kevinbackhouse/SecurityExploits/tree/8cbdbbe6363510f7d9ceec685373da12e6fc752d/libssh2/out_of_bounds_read_disconnect_CVE-2019-17498	Exploit Third Party Advisory
https://github.com/libssh2/libssh2/blob/42d37aa63129a1b2644bf6495198923534322d64/src/packet.c#L480	Exploit Third Party Advisory
https://github.com/libssh2/libssh2/commit/dedcbd106f8e52d5586b0205bc7677e4c9868f9c	Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/11/msg00010.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/22H4Q5XMGS3QNSA7OCL3U7UQZ4NXMR5O/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TY7EEE34RFKCTXTMBQQWWSLXZWSCXNDB/	Third Party Advisory
https://security.netapp.com/advisory/ntap-20220909-0004/	Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2019-17498
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17498

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 15:46:39				Added to TrackCVE
2022-12-04 04:49:21	2019-10-21T22:15Z	2019-10-21T22:15:10	CVE Published Date	updated
2022-12-04 04:49:21		2022-10-27T21:08:32	CVE Modified Date	updated
2022-12-04 04:49:21		Analyzed	Vulnerability Status	updated
2022-12-04 04:49:26			References	updated