[Secure-testing-team] Bug#873088: git-annex: remote code execution via crafted SSH URLs (CVE-2017-12976)

[Antoine Beaupre]

Package: git-annex
X-Debbugs-CC: team at security.debian.org secure-testing-team at lists.alioth.debian.org
Severity: grave
Tags: security

Hi,

the following vulnerability was published for git-annex.

CVE-2017-12976[0]:
| 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.

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2017-12976
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12976

Please adjust the affected versions in the BTS as needed.
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