Vulnerability Name:

CVE-2017-9079 (CCN-126285)

Assigned:2017-05-18
Published:2017-05-18
Updated:2019-10-04
Summary:Dropbear before 2017.75 might allow local users to read certain files as root, if the file has the authorized_keys file format with a command= option. This occurs because ~/.ssh/authorized_keys is read with root privileges and symlinks are followed.
CVSS v3 Severity:4.7 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N)
4.1 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
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): High
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:4.7 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:C/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-732
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2017-9079

Source: CCN
Type: Dropbear Mailing List, Thu May 18 23:02:09 AWST 2017
Dropbear 2017.75

Source: CONFIRM
Type: Mailing List, Patch, Third Party Advisory
http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2017q2/001985.html

Source: DEBIAN
Type: Third Party Advisory
DSA-3859

Source: XF
Type: UNKNOWN
dropbear-cve20179079-info-disc(126285)

Source: CCN
Type: Dropbear Web site
Dropbear SSH

Source: CONFIRM
Type: UNKNOWN
https://security.netapp.com/advisory/ntap-20191004-0006/

Vulnerable Configuration:Configuration 1:
  • cpe:/a:dropbear_ssh_project:dropbear_ssh:*:*:*:*:*:*:*:* (Version < 2017.75)

    • Configuration 2:
  • cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.xenial:def:201790790000000
    V
    		CVE-2017-9079 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-05-19
    oval:com.ubuntu.artful:def:20179079000
    V
    		CVE-2017-9079 on Ubuntu 17.10 (artful) - medium.
    2017-05-19
    oval:com.ubuntu.xenial:def:20179079000
    V
    		CVE-2017-9079 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-05-19
    oval:com.ubuntu.disco:def:201790790000000
    V
    		CVE-2017-9079 on Ubuntu 19.04 (disco) - medium.
    2017-05-19
    oval:com.ubuntu.bionic:def:20179079000
    V
    		CVE-2017-9079 on Ubuntu 18.04 LTS (bionic) - medium.
    2017-05-19
    oval:com.ubuntu.cosmic:def:201790790000000
    V
    		CVE-2017-9079 on Ubuntu 18.10 (cosmic) - medium.
    2017-05-19
    oval:com.ubuntu.cosmic:def:20179079000
    V
    		CVE-2017-9079 on Ubuntu 18.10 (cosmic) - medium.
    2017-05-19
    oval:com.ubuntu.bionic:def:201790790000000
    V
    		CVE-2017-9079 on Ubuntu 18.04 LTS (bionic) - medium.
    2017-05-19
    oval:com.ubuntu.trusty:def:20179079000
    V
    		CVE-2017-9079 on Ubuntu 14.04 LTS (trusty) - medium.
    2017-05-19
    BACK
    dropbear_ssh_project dropbear ssh *
    debian debian linux 8.0