Improper Input Validation Affecting git-annex package, versions <6.20170101-1+deb9u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-DEBIAN9-GITANNEX-277314
- published20 Aug 2017
- disclosed20 Aug 2017
Introduced: 20 Aug 2017
CVE-2017-12976 (opens in a new tab)How to fix?
Upgrade Debian:9 git-annex to version 6.20170101-1+deb9u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream git-annex package and not the git-annex package as distributed by Debian.
See How to fix? for Debian:9 relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2017-12976
- 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
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-12976
- http://source.git-annex.branchable.com/?p=source.git%3Ba=blob%3Bf=doc/bugs/dashed_ssh_hostname_security_hole.mdwn
- http://source.git-annex.branchable.com/?p=source.git%3Ba=commit%3Bh=c24d0f0e8984576654e2be149005bc884fe0403a
- http://source.git-annex.branchable.com/?p=source.git%3Ba=commit%3Bh=df11e54788b254efebb4898b474de11ae8d3b471