CVE-2019-17498

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Summary

CVECVE-2019-17498
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-10-21 22:15:10 UTC
Updated2026-10-14 07:16:48 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

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

Problem Types: CWE-190 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
2.0[email protected]Primary5.8AV:N/AC:M/Au:N/C:P/I:N/A:P

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
Partial

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 8.0 All All All
Operating System Debian Debian Linux 9.0 All All All
Operating System Fedoraproject Fedora 30 All All All
Operating System Fedoraproject Fedora 31 All All All
Application Libssh2 Libssh2 All All All All
Application Netapp Active Iq Unified Manager - All All All
Operating System Netapp Bootstrap Os - All All All
Application Netapp Element Software - All All All
Hardware Netapp Hci Compute Node - All All All
Application Netapp Hci Management Node - All All All
Application Netapp Ontap Select Deploy Administration Utility - All All All
Application Netapp Solidfire - All All All
Operating System Opensuse Leap 15.1 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified

References

ReferenceSourceLinkTags
cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
[SECURITY] Fedora 31 Update: libssh2-1.9.0-3.fc31 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
[SECURITY] [DLA 1991-1] libssh2 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
libssh2 1.9.0 Out-Of-Bounds Read ≈ Packet Storm af854a3a-2127-422b-91ae-364da2661108 packetstormsecurity.com
CVE-2019-17498 Libssh2 Vulnerability in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
libssh2/packet.c at 42d37aa63129a1b2644bf6495198923534322d64 · libssh2/libssh2 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Exploit, Third Party Advisory
packet.c: improve message parsing (#402) · libssh2/libssh2@dedcbd1 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Third Party Advisory
Page not found · GitHub · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Exploit, Third Party Advisory
[security-announce] openSUSE-SU-2019:2483-1: moderate: Security update f af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Mailing List, Third Party Advisory
[SECURITY] [DLA 3559-1] libssh2 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
[SECURITY] [DLA 2848-1] libssh2 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
[SECURITY] Fedora 30 Update: libssh2-1.9.0-3.fc30 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
Another libssh2 integer overflow (CVE-2019-17498) | Semmle Blog af854a3a-2127-422b-91ae-364da2661108 blog.semmle.com Broken Link
[SECURITY] Fedora 31 Update: libssh2-1.9.0-3.fc31 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 30 Update: libssh2-1.9.0-3.fc30 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 178944 Debian Security Update for libssh2 (DLA 2848-1)
  • 296075 Oracle Solaris 11.4 Support Repository Update (SRU) 21.69.0 Missing (CPUAPR2020)
  • 377296 Alibaba Cloud Linux Security Update for libssh2 (ALINUX2-SA-2020:0132)
  • 500320 Alpine Linux Security Update for libssh2
  • 504087 Alpine Linux Security Update for libssh2
  • 591406 Siemens SIMATIC S7-1500 CPU GNU/Linux subsystem Multiple Vulnerabilities (SSB-439005, ICSA-22-104-13)
  • 6000057 Debian Security Update for libssh2 (DLA 3559-1)
  • 750528 OpenSUSE Security Update for libssh2_org (openSUSE-SU-2020:2129-1)
  • 750530 OpenSUSE Security Update for libssh2_org (openSUSE-SU-2020:2126-1)
  • 900070 CBL-Mariner Linux Security Update for libssh2 1.9.0
  • 900965 Common Base Linux Mariner (CBL-Mariner) Security Update for libssh2 (6650-1)
  • 903013 Common Base Linux Mariner (CBL-Mariner) Security Update for libssh2 (1819)

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