CVE-2021-21300

git-scm git, fedoraproject fedora, apple xcode +1 lainnya

TLP:CLEAR

csirt@kutim:~/threat-intel/cve/CVE-2021-21300

Katalog CVE

CVSS 7.5 · High EPSS 88,5%

Kerentanan Improper Link Resolution Before File Access ('Link Following') pada git-scm git, fedoraproject fedora +2 lainnya. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

Git is an open-source distributed revision control system. In affected versions of Git a specially crafted repository that contains symbolic links as well as files using a clean/smudge filter such as Git LFS, may cause just-checked out script to be executed while cloning onto a case-insensitive file system such as NTFS, HFS+ or APFS (i.e. the default file systems on Windows and macOS). Note that clean/smudge filters have to be configured for that. Git for Windows configures Git LFS by default, and is therefore vulnerable. The problem has been patched in the versions published on Tuesday, March 9th, 2021. As a workaound, if symbolic link support is disabled in Git (e.g. via `git config --global core.symlinks false`), the described attack won't work. Likewise, if no clean/smudge filters such as Git LFS are configured globally (i.e. _before_ cloning), the attack is foiled. As always, it is best to avoid cloning repositories from untrusted sources. The earliest impacted version is 2.14.2. The fix versions are: 2.30.1, 2.29.3, 2.28.1, 2.27.1, 2.26.3, 2.25.5, 2.24.4, 2.23.4, 2.22.5, 2.21.4, 2.20.5, 2.19.6, 2.18.5, 2.17.62.17.6.

Rincian

Terbit di NVD
9 Maret 2021
Terakhir diubah
17 Juni 2026
Status NVD
Modified
CVSS 3.1
7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-59: Improper Link Resolution Before File Access ('Link Following')
EPSS (30 hari)
88,5% peluang dieksploitasi; lebih tinggi dari 99,7% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
git-scm git Semua versi hingga 2.14.2
git-scm git Versi 2.17.0 hingga sebelum 2.17.6
git-scm git Versi 2.18.0 hingga sebelum 2.18.5
git-scm git Versi 2.19.0 hingga sebelum 2.19.6
git-scm git Versi 2.20.0 hingga sebelum 2.20.5
git-scm git Versi 2.21.0 hingga sebelum 2.21.4
git-scm git Versi 2.22.0 hingga sebelum 2.22.5
git-scm git Versi 2.23.0 hingga sebelum 2.23.4
git-scm git Versi 2.24.0 hingga sebelum 2.24.4
git-scm git Versi 2.25.0 hingga sebelum 2.25.5
git-scm git Versi 2.26.0 hingga sebelum 2.26.3
git-scm git Versi 2.29.0 hingga sebelum 2.29.3
git-scm git Versi 2.30.0 hingga sebelum 2.30.2
git-scm git Versi 2.27.0
git-scm git Versi 2.28.0
fedoraproject fedora Versi 32
fedoraproject fedora Versi 33
fedoraproject fedora Versi 34
apple xcode Semua versi sebelum 12.5
debian debian linux Versi 10.0

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.