Vulnerability Name:

CVE-2020-16135 (CCN-186148)

Assigned:2020-06-03
Published:2020-06-03
Updated:2022-05-12
Summary:libssh 0.9.4 has a NULL pointer dereference in tftpserver.c if ssh_buffer_new returns NULL.
CVSS v3 Severity:5.9 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.4 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
5.9 Medium (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.4 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-476
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-16135

Source: MISC
Type: Exploit, Issue Tracking, Vendor Advisory
https://bugs.libssh.org/rLIBSSHe631ebb3e2247dd25e9678e6827c20dc73b73238

Source: CCN
Type: libssh Bug T232
NULL pointer deref

Source: MISC
Type: Issue Tracking, Vendor Advisory
https://bugs.libssh.org/T232

Source: XF
Type: UNKNOWN
libssh-cve202016135-dos(186148)

Source: MISC
Type: Third Party Advisory
https://gitlab.com/libssh/libssh-mirror/-/merge_requests/120

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20200731 [SECURITY] [DLA 2303-1] libssh security update

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2020-ac3e29073f

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2020-f4f5e49cb8

Source: GENTOO
Type: Third Party Advisory
GLSA-202011-05

Source: UBUNTU
Type: Third Party Advisory
USN-4447-1

Source: CCN
Type: IBM Security Bulletin 6541298 (Cloud Pak for Automation)
Multiple security vulnerabilities fixed in Cloud Pak for Automation components

Source: CCN
Type: IBM Security Bulletin 6551876 (Cloud Pak for Security)
Cloud Pak for Security uses packages that are vulnerable to multiple CVEs

Source: CCN
Type: IBM Security Bulletin 6560126 (Sterling Connect:Direct for UNIX Certified Container)
IBM Sterling Connect:Direct for UNIX Certified Container is affected by multiple vulnerabilities in Red Hat Universal Base Image version 8.4-206.1626828523 and Binutils version 2.30-93

Source: CCN
Type: IBM Security Bulletin 6574787 (QRadar SIEM)
IBM QRadar SIEM is vulnerable to using components with Known Vulnerabilities

Source: CCN
Type: IBM Security Bulletin 6856409 (Cloud Pak for Security)
IBM Cloud Pak for Security includes components with multiple known vulnerabilities

Source: CCN
Type: Libssh Web site
Libssh

Source: CCN
Type: Oracle CPUApr2022
Oracle Critical Patch Update Advisory - April 2022

Source: MISC
Type: Patch, Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2020-16135

Vulnerable Configuration:Configuration 1:
  • cpe:/a:libssh:libssh:0.9.4:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:fedoraproject:fedora:32:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*

    • Configuration 5:
  • cpe:/a:oracle:communications_cloud_native_core_policy:1.15.0:*:*:*:*:*:*:*

    • Configuration RedHat 1:
  • cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/a:redhat:enterprise_linux:8::appstream:*:*:*:*:*

    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:8:*:*:*:*:*:*:*

    • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:8::baseos:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:libssh:libssh:0.9.4:*:*:*:*:*:*:*
  • AND
  • cpe:/a:ibm:qradar_security_information_and_event_manager:7.3.3:-:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_for_automation:21.0.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_for_automation:21.0.2:-:*:*:*:*:*:*
  • OR cpe:/a:ibm:qradar_security_information_and_event_manager:7.4.3:-:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_for_security:1.7.2.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:qradar_security_information_and_event_manager:7.5.0:-:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_for_security:1.10.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_for_security:1.10.6.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:7676
    P
    		libssh-config-0.9.6-150400.1.5 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:3084
    P
    		gnome-settings-daemon-3.20.1-50.16.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:94714
    P
    		libssh-config-0.9.6-150400.1.5 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:112853
    P
    		libssh-config-0.9.6-1.2 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:106316
    P
    		Security update for busybox (Important) (in QA)
    2022-01-14
    oval:com.redhat.rhsa:def:20214387
    P
    		RHSA-2021:4387: libssh security update (Low)
    2021-11-09
    BACK
    libssh libssh 0.9.4
    debian debian linux 9.0
    fedoraproject fedora 32
    fedoraproject fedora 33
    canonical ubuntu linux 18.04
    canonical ubuntu linux 20.04
    canonical ubuntu linux 16.04
    oracle communications cloud native core policy 1.15.0
    libssh libssh 0.9.4
    ibm qradar security information and event manager 7.3.3
    ibm cloud pak for automation 21.0.1
    ibm cloud pak for automation 21.0.2 -
    ibm qradar security information and event manager 7.4.3 -
    ibm cloud pak for security 1.7.2.0
    ibm qradar security information and event manager 7.5.0 -
    ibm cloud pak for security 1.10.0.0
    ibm cloud pak for security 1.10.6.0