Amazon Linux AMI update for git



Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-1000117
CWE-ID CWE-78
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Amazon Linux AMI
Operating systems & Components / Operating system

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) OS command injection

EUVDB-ID: #VU7889

Risk: High

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2017-1000117

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The weakness exists due to command injection flaw. A remote attacker (e.g., repository) can return a specially crafted 'ssh://' URL during 'clone' commands to execute arbitrary shell commands with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update the affected packages.

i686:
    git-2.13.5-1.53.amzn1.i686
    git-daemon-2.13.5-1.53.amzn1.i686
    git-debuginfo-2.13.5-1.53.amzn1.i686
    git-svn-2.13.5-1.53.amzn1.i686

noarch:
    git-email-2.13.5-1.53.amzn1.noarch
    git-bzr-2.13.5-1.53.amzn1.noarch
    git-p4-2.13.5-1.53.amzn1.noarch
    git-cvs-2.13.5-1.53.amzn1.noarch
    emacs-git-el-2.13.5-1.53.amzn1.noarch
    git-all-2.13.5-1.53.amzn1.noarch
    git-hg-2.13.5-1.53.amzn1.noarch
    perl-Git-SVN-2.13.5-1.53.amzn1.noarch
    gitweb-2.13.5-1.53.amzn1.noarch
    emacs-git-2.13.5-1.53.amzn1.noarch
    perl-Git-2.13.5-1.53.amzn1.noarch

src:
    git-2.13.5-1.53.amzn1.src

x86_64:
    git-daemon-2.13.5-1.53.amzn1.x86_64
    git-2.13.5-1.53.amzn1.x86_64
    git-debuginfo-2.13.5-1.53.amzn1.x86_64
    git-svn-2.13.5-1.53.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3 External links

https://alas.aws.amazon.com/ALAS-2017-882.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.



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