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Vulnerabilities / CVE-2020-12278

critical

CVE-2020-12278

libgit2: files inside the .git directory may be overwritten during cloning via NTFS Alternate Data Streams

Published Modified CWE 706
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Julia9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD, Julia. Rated lower by Ubuntu (medium), Red Hat (low).

Description

An issue was discovered in libgit2 before 0.28.4 and 0.9x before 0.99.0. path.c mishandles equivalent filenames that exist because of NTFS Alternate Data Streams. This may allow remote code execution when cloning a repository. This issue is similar to CVE-2019-1352.

Affected packages and fixed versions

SourcePackageFixed in
julia::Julia Ecosystem Security AdvisoriesLibGit2_jll0.28.5+0
conan::GitLab Advisory Database Communitylibgit20.28.4
debian 10libgit20.27.7+dfsg.1-0.2+deb10u1
debian 11libgit20.28.4+dfsg.1-2
debian 12libgit20.28.4+dfsg.1-2
debian 13libgit20.28.4+dfsg.1-2
debian 14libgit20.28.4+dfsg.1-2
debian 8libgit2no fix listed
debian 9libgit20.25.1+really0.24.6-1+deb9u1
echolibgit20.28.4+dfsg.1-2
Red Hatlibgit2, libgit2-develno fix listed
ubuntu 16.04-ESMlibgit20.24.1-2ubuntu0.2+esm2
Show all 14 entries from 13 sources
SourcePackageFixed in
julia::Julia Ecosystem Security AdvisoriesLibGit2_jll0.28.5+0
conan::GitLab Advisory Database Communitylibgit20.28.4
debian 10libgit20.27.7+dfsg.1-0.2+deb10u1
debian 11libgit20.28.4+dfsg.1-2
debian 12libgit20.28.4+dfsg.1-2
debian 13libgit20.28.4+dfsg.1-2
debian 14libgit20.28.4+dfsg.1-2
debian 8libgit2no fix listed
debian 9libgit20.25.1+really0.24.6-1+deb9u1
echolibgit20.28.4+dfsg.1-2
Red Hatlibgit2no fix listed
Red Hatlibgit2-develno fix listed
ubuntu 16.04-ESMlibgit20.24.1-2ubuntu0.2+esm2
ubuntu 18.04-ESMlibgit20.26.0+dfsg.1-1.1ubuntu0.2+esm1

References

All 11 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.