PT-2018-3092 · Libssh2+5 · Libssh2+5

Chris Coulson · Published 2018-12-03 · Updated 2024-06-15 · CVE-2019-3858

Positive Technologies (AI Summary)

CVSS v2.0

9.4

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions libssh2 versions prior to 1.8.1

Description An out of bounds read flaw was discovered in libssh2 when a specially crafted SFTP packet is received from the server. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.

Recommendations For versions prior to 1.8.1, update to version 1.8.1 or later to resolve the issue. As a temporary workaround, consider restricting access to SSH servers until the update is applied.

Exploit

Fix

DoS

Out of bounds Read

Weakness Enumeration

CWE-130

CWE-125

Related Identifiers

ALT-PU-2019-1501

BDU:2019-03871

CESA-2019_2136

CVE-2019-3858

DLA-1730-1

DSA-4431-1

MGASA-2019-0139

OPENSUSE-SU-2019:1109-1

OPENSUSE-SU-2019_1075-1

OPENSUSE-SU-2019_1109-1

OPENSUSE-SU-2020:2126-1

OPENSUSE-SU-2020:2129-1

OPENSUSE-SU-2020_2126-1

OPENSUSE-SU-2020_2129-1

OPENSUSE-SU-2024:10999-1

RHSA-2019:2136

RHSA-2019_2136

SUSE-SU-2019:0655-1

SUSE-SU-2019:13982-1

SUSE-SU-2019:13997-1

SUSE-SU-2020:3551-1

USN-5308-1

Affected Products

Alt Linux

Centos

Red Hat

Suse

Ubuntu

Libssh2

References · 141

• 🔥❌ https://github.com/kevinbackhouse/SecurityExploits/tree/8cbdbbe6363510f7d9ceec685373da12e6fc752d/libssh2/out_of_bounds_read_disconnect_CVE-2019-17498 · Exploit, Deleted
• https://bdu.fstec.ru/vul/2022-05961 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3861 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3858 · Patch
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3860 · Security Note
• https://bdu.fstec.ru/vul/2019-01304 · Security Note
• https://ubuntu.com/security/CVE-2019-3862 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-03898 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2019:1109-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:13997-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:3551-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-3857 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-3858 · Vendor Advisory