Vulnerability Name:

CVE-2018-1000021 (CCN-139079)

Assigned:2018-01-06
Published:2018-01-06
Updated:2018-03-06
Summary:GIT version 2.15.1 and earlier contains a Input Validation Error vulnerability in Client that can result in problems including messing up terminal configuration to RCE. This attack appear to be exploitable via The user must interact with a malicious git server, (or have their traffic modified in a MITM attack).
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
8.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.7 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
9.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-20
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2018-1000021

Source: CCN
Type: batterystaples Blog, January 06, 2018
Security implications of ANSI escape codes in Git sever responses

Source: MISC
Type: Third Party Advisory
http://www.batterystapl.es/2018/01/security-implications-of-ansi-escape.html

Source: XF
Type: UNKNOWN
git-cve20181000021-command-exec(139079)

Source: CCN
Type: IBM Security Bulletin 6610349 (Watson Speech Services Cartridge for Cloud Pak for Data)
IBM Watson Speech Services Cartridge for IBM Cloud Pak for Data is vulnerable to arbitrary command execution in Git (CVE-2018-1000021)

Vulnerable Configuration:Configuration 1:
  • cpe:/a:git-scm:git:*:*:*:*:*:*:*:* (Version <= 2.15.1)

    • Configuration CCN 1:
  • cpe:/a:git-scm:git:2.15.1:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.xenial:def:201810000210000000
    V
    		CVE-2018-1000021 on Ubuntu 16.04 LTS (xenial) - low.
    2018-02-09
    oval:com.ubuntu.artful:def:20181000021000
    V
    		CVE-2018-1000021 on Ubuntu 17.10 (artful) - low.
    2018-02-09
    oval:com.ubuntu.xenial:def:20181000021000
    V
    		CVE-2018-1000021 on Ubuntu 16.04 LTS (xenial) - low.
    2018-02-09
    oval:com.ubuntu.disco:def:201810000210000000
    V
    		CVE-2018-1000021 on Ubuntu 19.04 (disco) - low.
    2018-02-09
    oval:com.ubuntu.bionic:def:20181000021000
    V
    		CVE-2018-1000021 on Ubuntu 18.04 LTS (bionic) - low.
    2018-02-09
    oval:com.ubuntu.cosmic:def:201810000210000000
    V
    		CVE-2018-1000021 on Ubuntu 18.10 (cosmic) - low.
    2018-02-09
    oval:com.ubuntu.cosmic:def:20181000021000
    V
    		CVE-2018-1000021 on Ubuntu 18.10 (cosmic) - low.
    2018-02-09
    oval:com.ubuntu.bionic:def:201810000210000000
    V
    		CVE-2018-1000021 on Ubuntu 18.04 LTS (bionic) - low.
    2018-02-09
    oval:com.ubuntu.trusty:def:20181000021000
    V
    		CVE-2018-1000021 on Ubuntu 14.04 LTS (trusty) - low.
    2018-02-09
    BACK
    git-scm git *
    git-scm git 2.15.1