CVE-2020-12279

Source
https://nvd.nist.gov/vuln/detail/CVE-2020-12279
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-12279.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-12279
Downstream
Related
  • GHSA-589j-mmg9-733v
Published
2020-04-27T17:15:13Z
Modified
2025-10-15T11:33:12.741412Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

An issue was discovered in libgit2 before 0.28.4 and 0.9x before 0.99.0. checkout.c mishandles equivalent filenames that exist because of NTFS short names. This may allow remote code execution when cloning a repository. This issue is similar to CVE-2019-1353.

References

Affected packages

Git / github.com/libgit2/libgit2

Affected ranges

Type
GIT
Repo
https://github.com/libgit2/libgit2
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
Fixed
Fixed

Affected versions

v0.*

v0.1.0
v0.10.0
v0.11.0
v0.12.0
v0.13.0
v0.14.0
v0.15.0
v0.16.0
v0.17.0
v0.18.0
v0.19.0
v0.2.0
v0.20.0
v0.21.0
v0.21.0-rc1
v0.21.0-rc2
v0.22.0
v0.22.0-rc1
v0.22.0-rc2
v0.23.0
v0.23.0-rc1
v0.23.0-rc2
v0.24.0
v0.24.0-rc1
v0.24.4
v0.25.0
v0.25.0-rc1
v0.25.0-rc2
v0.25.1
v0.26.0
v0.26.0-rc1
v0.26.0-rc2
v0.27.0
v0.27.0-rc1
v0.27.0-rc2
v0.27.0-rc3
v0.28.0
v0.28.0-rc1
v0.28.1
v0.28.2
v0.28.3
v0.3.0
v0.8.0

Database specific

{
    "vanir_signatures": [
        {
            "id": "CVE-2020-12279-18c21614",
            "signature_type": "Function",
            "digest": {
                "function_hash": "54554569915003734768761110712720175172",
                "length": 109.0
            },
            "source": "https://github.com/libgit2/libgit2/commit/64c612cc3e25eff5fb02c59ef5a66ba7a14751e4",
            "target": {
                "file": "tests/checkout/nasty.c",
                "function": "test_checkout_nasty__git_tilde1"
            },
            "deprecated": false,
            "signature_version": "v1"
        },
        {
            "id": "CVE-2020-12279-577666bb",
            "signature_type": "Line",
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "34151097703912068279059189515774524754",
                    "640971338307182747042490539310138101",
                    "261090504824042527251622828911835319539",
                    "190820267254834495437436494656192599698",
                    "109452042279548290592481542638704603152",
                    "183873679057880809488074463187073290050"
                ]
            },
            "source": "https://github.com/libgit2/libgit2/commit/64c612cc3e25eff5fb02c59ef5a66ba7a14751e4",
            "target": {
                "file": "tests/checkout/nasty.c"
            },
            "deprecated": false,
            "signature_version": "v1"
        },
        {
            "id": "CVE-2020-12279-9b82710e",
            "signature_type": "Function",
            "digest": {
                "function_hash": "270919345757994032373988505154932358300",
                "length": 636.0
            },
            "source": "https://github.com/libgit2/libgit2/commit/64c612cc3e25eff5fb02c59ef5a66ba7a14751e4",
            "target": {
                "file": "src/checkout.c",
                "function": "checkout_verify_paths"
            },
            "deprecated": false,
            "signature_version": "v1"
        },
        {
            "id": "CVE-2020-12279-fa1bf32c",
            "signature_type": "Line",
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "91163887863019740474463251087811095055",
                    "163293920236655175007224761102751500986",
                    "304947559022233408970519915295579978259",
                    "337098278619693989970552484739974126394"
                ]
            },
            "source": "https://github.com/libgit2/libgit2/commit/64c612cc3e25eff5fb02c59ef5a66ba7a14751e4",
            "target": {
                "file": "src/checkout.c"
            },
            "deprecated": false,
            "signature_version": "v1"
        }
    ]
}