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Vulnerability · NVD

CVE-2021-21300

CVE-2021-21300, rated critical by the vendor: 2 tracked apps concerned, all fixed or indeterminable on their current version.

Severity (CVSS)
8.8

Base CVSS ; severity is a vendor rating (different scale)

Exploitation
88.5 %

EPSS, predicted over 30 days

Tracked apps
2
Still exposed
0
Vendor bulletin scale : NVD CVSS pending

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.

Attack vector : Network No privileges required
Show raw CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
EPSS 88.53% exploit likely percentile 99.8%

Tracked apps referencing this CVE

For each app: the affected range, the fixing version, and where the tracked app stands today.

NVD references 5 distinct products for this CVE : only those tracked by Scout (mobile and desktop catalog apps) are listed above. Libraries, servers and out-of-scope products do not appear here. Full list on NVD ↗

Vulnerable CPE configurations (16)
Vendor Product Versions
git-scm git
All platforms (wildcard)
 ≤2.14.2
git-scm git
All platforms (wildcard)
 ≥2.17.0 <2.17.6
git-scm git
All platforms (wildcard)
 ≥2.18.0 <2.18.5
git-scm git
All platforms (wildcard)
 ≥2.19.0 <2.19.6
git-scm git
All platforms (wildcard)
 ≥2.20.0 <2.20.5
git-scm git
All platforms (wildcard)
 ≥2.21.0 <2.21.4
git-scm git
All platforms (wildcard)
 ≥2.22.0 <2.22.5
git-scm git
All platforms (wildcard)
 ≥2.23.0 <2.23.4
git-scm git
All platforms (wildcard)
 ≥2.24.0 <2.24.4
git-scm git
All platforms (wildcard)
 ≥2.25.0 <2.25.5
git-scm git
All platforms (wildcard)
 ≥2.26.0 <2.26.3
git-scm git
All platforms (wildcard)
 ≥2.29.0 <2.29.3
git-scm git
All platforms (wildcard)
 ≥2.30.0 <2.30.2
git-scm git
All platforms (wildcard)
 -
git-scm git
All platforms (wildcard)
 -
apple xcode
All platforms (wildcard)
 <12.5
View on NVD ↗ Advisory · git-scm.com Advisory · github.com

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