HSEC-2023-0009
See a problem?- Import Source
- https://github.com/haskell/security-advisories/blob/generated/osv-export/2023/HSEC-2023-0009.json
- JSON Data
- https://api.osv.dev/v1/vulns/HSEC-2023-0009
- Aliases
- Related
- Published
- 2023-07-25T13:25:42Z
- Modified
- 2023-12-13T13:02:08.533987Z
- Summary
- git-annex command injection via malicious SSH hostname
- Details
-
git-annex command injection via malicious SSH hostname
git-annex was vulnerable to the same class of security hole as git's CVE-2017-1000117. In several cases,
git-annexparses a repository URL, and uses it to generate asshcommand, with the hostname to ssh to coming from the URL. If the hostname it parses is something like-eProxyCommand=evil, this could result in arbitrary local code execution.Some details of URL parsing may prevent the exploit working in some cases.
Exploiting this would involve the attacker tricking the victim into adding a remote something like
ssh://-eProxyCommand=evil/blah.One possible avenue for an attacker that avoids exposing the URL to the user is to use
initremotewith an SSH remote, so embedding the URL in the git-annex branch. Then the victim would enable it withenableremote.This was fixed in version 6.20170818. Now there's a
SshHosttype that is not allowed to start with a dash, and every invocation ofgit-annexuses a function that takes aSshHost. - References
Affected packages
Hackage / git-annex
Package
- Name
- git-annex
- Purl
- pkg:hackage/git-annex
Severity
- 8.8 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator