CVE-2019-13115

CVSS V2 Medium 5.8 CVSS V3 High 8.1

Description

In libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds read in the way packets are read from the server. A remote attacker who compromises a 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. This is related to an _libssh2_check_length mistake, and is different from the various issues fixed in 1.8.1, such as CVE-2019-3855.

Overview

CVE ID
CVE-2019-13115

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2019-07-16T18:15:13

Last Modified Date
2022-04-05T21:09:11

Weakness Enumerations

CWE	URL
CWE-125	http://cwe.mitre.org/data/definitions/125.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:libssh2:libssh2::::::::	1	OR		1.9.0
cpe:2.3:o:debian:debian_linux:8.0:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:9.0:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:29:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:30:::::::*	1	OR
cpe:2.3:a:netapp:cloud_backup:-:::::::*	1	OR
cpe:2.3:a:netapp:e-series_santricity_os_controller::::::::	1	OR	11.0.0	11.70.1
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:::::::*	1	OR
cpe:2.3:a:f5:traffix_systems_signaling_delivery_controller::::::::	1	OR	5.0.0	5.1.0

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
https://github.com/libssh2/libssh2/pull/350	Issue Tracking Third Party Advisory
https://blog.semmle.com/libssh2-integer-overflow/	Exploit Third Party Advisory
https://github.com/libssh2/libssh2/compare/02ecf17...42d37aa	Third Party Advisory
https://libssh2.org/changes.html	Release Notes Vendor Advisory
https://lists.debian.org/debian-lts-announce/2019/07/msg00024.html	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6LUNHPW64IGCASZ4JQ2J5KDXNZN53DWW/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M7IF3LNHOA75O4WZWIHJLIRMA5LJUED3/	Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20190806-0002/	Third Party Advisory
https://support.f5.com/csp/article/K13322484	Third Party Advisory
https://support.f5.com/csp/article/K13322484?utm_source=f5support&utm_medium=RSS	Third Party Advisory
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E	Mailing List Third Party Advisory
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html	Mailing List Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2019-13115
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-13115

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 06:29:39				Added to TrackCVE
2022-12-03 23:23:12	2019-07-16T18:15Z	2019-07-16T18:15:13	CVE Published Date	updated
2022-12-03 23:23:12		2022-04-05T21:09:11	CVE Modified Date	updated
2022-12-03 23:23:12		Analyzed	Vulnerability Status	updated