Vulnerability CVE-2017-12976
Published: 2017-08-20   Modified: 2017-08-21

Description:
git-annex before 6.20170818 allows remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostname, as demonstrated by an ssh://-eProxyCommand= URL, a related issue to CVE-2017-9800, CVE-2017-12836, CVE-2017-1000116, and CVE-2017-1000117.

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Git-annex project -> Git-annex 

 References:
http://source.git-annex.branchable.com/?p=source.git;a=blob;f=doc/bugs/dashed_ssh_hostname_security_hole.mdwn
http://source.git-annex.branchable.com/?p=source.git;a=commit;h=c24d0f0e8984576654e2be149005bc884fe0403a
http://source.git-annex.branchable.com/?p=source.git;a=commit;h=df11e54788b254efebb4898b474de11ae8d3b471
http://www.debian.org/security/2017/dsa-4010
https://lists.debian.org/debian-lts-announce/2018/09/msg00004.html
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