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Vulnerability Details : CVE-2020-11008

Affected versions of Git have a vulnerability whereby Git can be tricked into sending private credentials to a host controlled by an attacker. This bug is similar to CVE-2020-5260(GHSA-qm7j-c969-7j4q). The fix for that bug still left the door open for an exploit where _some_ credential is leaked (but the attacker cannot control which one). Git uses external "credential helper" programs to store and retrieve passwords or other credentials from secure storage provided by the operating system. Specially-crafted URLs that are considered illegal as of the recently published Git versions can cause Git to send a "blank" pattern to helpers, missing hostname and protocol fields. Many helpers will interpret this as matching _any_ URL, and will return some unspecified stored password, leaking the password to an attacker's server. The vulnerability can be triggered by feeding a malicious URL to `git clone`. However, the affected URLs look rather suspicious; the likely vector would be through systems which automatically clone URLs not visible to the user, such as Git submodules, or package systems built around Git. The root of the problem is in Git itself, which should not be feeding blank input to helpers. However, the ability to exploit the vulnerability in practice depends on which helpers are in use. Credential helpers which are known to trigger the vulnerability: - Git's "store" helper - Git's "cache" helper - the "osxkeychain" helper that ships in Git's "contrib" directory Credential helpers which are known to be safe even with vulnerable versions of Git: - Git Credential Manager for Windows Any helper not in this list should be assumed to trigger the vulnerability.
Publish Date : 2020-04-21 Last Update Date : 2020-05-22
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 522

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2020:1980: git security update (Important) oval:com.redhat.rhsa:def:20201980 unix
RHSA-2020:2337: git security update (Important) oval:com.redhat.rhsa:def:20202337 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2020-11008

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 16.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 18.04 * * * Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 19.10 * * * Version Details Vulnerabilities
4 OS Debian Debian Linux 8.0 * * * Version Details Vulnerabilities
5 OS Fedoraproject Fedora 31 * * * Version Details Vulnerabilities
6 OS Fedoraproject Fedora 32 * * * Version Details Vulnerabilities
7 Application Git-scm GIT * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 3
Debian Debian Linux 1
Fedoraproject Fedora 2
Git-scm GIT 1

- References For CVE-2020-11008

https://github.com/git/git/security/advisories/GHSA-hjc9-x69f-jqj7 CONFIRM
https://github.com/git/git/commit/c44088ecc4b0722636e0a305f9608d3047197282
https://github.com/git/git/security/advisories/GHSA-qm7j-c969-7j4q
https://security.gentoo.org/glsa/202004-13
GENTOO GLSA-202004-13
https://lists.debian.org/debian-lts-announce/2020/04/msg00015.html
MLIST [debian-lts-announce] 20200424 [SECURITY] [DLA 2182-1] git security update
https://lists.fedoraproject.org/archives/list/[email protected]/message/PN3FUOXKX3AXTULYV53ACABER2W2FSOU/
FEDORA FEDORA-2020-f6b3b6fb18
https://lists.fedoraproject.org/archives/list/[email protected]/message/MOCTR2SEHCPSCOVUQJAGFPGKFMI2VE6V/
FEDORA FEDORA-2020-b2a2c830cf
https://usn.ubuntu.com/4334-1/
UBUNTU USN-4334-1
https://lists.fedoraproject.org/archives/list/[email protected]/message/74Q7WVJ6FKLIN62VS2JD2XCNWK5TNKOW/
FEDORA FEDORA-2020-4e093619bb
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00003.html
SUSE openSUSE-SU-2020:0598
https://support.apple.com/kb/HT211183 CONFIRM
http://seclists.org/fulldisclosure/2020/May/41
FULLDISC 20200522 APPLE-SA-2020-05-20-1 Xcode 11.5

- Metasploit Modules Related To CVE-2020-11008

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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