// For flags

CVE-2019-3859

Slackware Security Advisory - libssh2 Updates

Severity Score

9.1
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Se ha descubierto un error de lectura fuera de límites en libssh2, en versiones anteriores a la 1.8.1, en las funciones _libssh2_packet_require y _libssh2_packet_requirev. Un atacante remoto que comprometa un servidor SSH podría ser capaz de provocar una denegación de servicio o una lectura de datos en la memoria del cliente.

Chris Coulson discovered several vulnerabilities in libssh2, a SSH2 client-side library, which could result in denial of service, information leaks or the execution of arbitrary code.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-01-03 CVE Reserved
  • 2019-03-19 CVE Published
  • 2024-08-04 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-125: Out-of-bounds Read
CAPEC
References (20)
URL Tag Source
http://www.securityfocus.com/bid/107485 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html Mailing List
https://lists.debian.org/debian-lts-announce/2019/04/msg00006.html Mailing List
https://lists.debian.org/debian-lts-announce/2019/07/msg00024.html Mailing List
https://seclists.org/bugtraq/2019/Apr/25 Mailing List
https://security.netapp.com/advisory/ntap-20190327-0005 Third Party Advisory
https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-767 Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html X_refsource_misc
URL Date SRC
URL Date SRC
http://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.html 2023-11-07
http://www.openwall.com/lists/oss-security/2019/03/18/3 2023-11-07
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3859 2023-11-07
https://seclists.org/bugtraq/2019/Mar/25 2023-11-07
URL Date SRC
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html 2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html 2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00102.html 2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00103.html 2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O 2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCWEA5ZCLKRDUK62QVVYMFWLWKOPX3LO 2023-11-07
https://www.debian.org/security/2019/dsa-4431 2023-11-07
https://www.libssh2.org/CVE-2019-3859.html 2023-11-07
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Libssh2
Search vendor "Libssh2"
 Libssh2
Search vendor "Libssh2" for product "Libssh2"
 < 1.8.1
Search vendor "Libssh2" for product "Libssh2" and version " < 1.8.1"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 28
Search vendor "Fedoraproject" for product "Fedora" and version "28"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 29
Search vendor "Fedoraproject" for product "Fedora" and version "29"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 8.0
Search vendor "Debian" for product "Debian Linux" and version "8.0"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 9.0
Search vendor "Debian" for product "Debian Linux" and version "9.0"
-
Affected
Netapp
Search vendor "Netapp"
 Ontap Select Deploy Administration Utility
Search vendor "Netapp" for product "Ontap Select Deploy Administration Utility"
--
Affected
Opensuse
Search vendor "Opensuse"
 Leap
Search vendor "Opensuse" for product "Leap"
 15.0
Search vendor "Opensuse" for product "Leap" and version "15.0"
-
Affected
Opensuse
Search vendor "Opensuse"
 Leap
Search vendor "Opensuse" for product "Leap"
 42.3
Search vendor "Opensuse" for product "Leap" and version "42.3"
-
Affected