CVE-2017-12976

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-08-20 · updated 2026-06-17
Weakness: CWE-20

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.

Affected products

git-annex: through 6.20170520

References

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
http://www.debian.org/security/2017/dsa-4010
https://lists.debian.org/debian-lts-announce/2018/09/msg00004.html
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
http://www.debian.org/security/2017/dsa-4010
https://lists.debian.org/debian-lts-announce/2018/09/msg00004.html

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