malicious repositories can execute remote code while cloning (git git)
En bref
- Source
- NVD
- EPSS
- EPSS 88.53 % · centile 100 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- GitHub_M
- Statut NVD
- Modified
Rechercher sur…
Description
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.
Faiblesses (CWE)
- CWE-59 — Suivi de lien non maîtrisé
Références
- https://github.com/git/git/security/advisories/GHSA-8prw-h3cq-mghm
- https://lore.kernel.org/git/xmqqim6019yd.fsf%40gitster.c.googlers.com/
- https://git-scm.com/docs/git-config#Documentation/git-config.txt-coresymlinks
- https://git-scm.com/docs/gitattributes#_filter
- https://github.com/git/git/commit/684dd4c2b414bcf648505e74498a608f28de4592
- http://www.openwall.com/lists/oss-security/2021/03/09/3
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCLJJLKKMS5WRFO6C475AOUZTWQLIARX/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LMXX2POK5X576BSDWSXGU7EIK6I72ERU/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBPNGLQSYJHLZZ37BO42YY6S5OTIF4L4/
- https://support.apple.com/kb/HT212320
- http://seclists.org/fulldisclosure/2021/Apr/60
- https://security.gentoo.org/glsa/202104-01
- http://packetstormsecurity.com/files/163978/Git-LFS-Clone-Command-Execution.html
- https://lists.debian.org/debian-lts-announce/2022/10/msg00014.html
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.0 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N | GitHub_M |
| CVSS 3.1 | HIGH 8.0 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 5.1 | AV:N/AC:H/Au:N/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
Références européennes
- ENISA EUVD · EUVD-2021-8658
- GCVE · GCVE-0-2021-21300
Avis du CERT-FR
- CERTFR-2021-AVI-314 — Multiples vulnérabilités dans les produits Apple · cert.ssi.gouv.fr
- CERTFR-2021-AVI-182 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*≤ 2.14.2cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*≥ 2.17.0 < 2.17.6cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*≥ 2.18.0 < 2.18.5cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*≥ 2.19.0 < 2.19.6cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*≥ 2.20.0 < 2.20.5cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*≥ 2.21.0 < 2.21.4cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*≥ 2.22.0 < 2.22.5cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*≥ 2.23.0 < 2.23.4cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*≥ 2.24.0 < 2.24.4cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*≥ 2.25.0 < 2.25.5cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*≥ 2.26.0 < 2.26.3cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*≥ 2.29.0 < 2.29.3cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*≥ 2.30.0 < 2.30.2cpe:2.3:a:git-scm:git:2.27.0:*:*:*:*:*:*:*cpe:2.3:a:git-scm:git:2.28.0:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*cpe:2.3:a:apple:xcode:*:*:*:*:*:*:*:*< 12.5cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Produits affectés
| Produit | Versions |
|---|---|
| git · git | affected >= 2.14.2, < 2.17.62.17.6 ; affected >= 2.18.0, < 2.18.5 ; affected >= 2.19.0, < 2.19.6 ; affected >= 2.20.0, < 2.20.5 ; affected >= 2.21.0, < 2.21.4 ; affected >= 2.22.0, < 2.22.5 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |