CVE-2022-29187
Vulnérabilité élevée dans git (git)
Description
Git is a distributed revision control system. Git prior to versions 2.37.1, 2.36.2, 2.35.4, 2.34.4, 2.33.4, 2.32.3, 2.31.4, and 2.30.5, is vulnerable to privilege escalation in all platforms. An unsuspecting user could still be affected by the issue reported in CVE-2022-24765, for example when navigating as root into a shared tmp directory that is owned by them, but where an attacker could create a git repository. Versions 2.37.1, 2.36.2, 2.35.4, 2.34.4, 2.33.4, 2.32.3, 2.31.4, and 2.30.5 contain a patch for this issue. The simplest way to avoid being affected by the exploit described in the example is to avoid running git as root (or an Administrator in Windows), and if needed to reduce its use to a minimum. While a generic workaround is not possible, a system could be hardened from the exploit described in the example by removing any such repository if it exists already and creating one as root to block any future attacks.
Gravité et risque d'exploitation
CVE-2022-29187 obtient un score CVSS de 7.8/10, soit une gravité élevée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.45 %, ce qui la place devant 37.4 % des CVE référencées.
Que faire ?
- Vérifiez si git (versions >= 2.33.2, < 2.33.4, >= 2.30.3, < 2.30.5, >= 2.36, < 2.36.2, >= 2.34.2, < 2.34.4, >= 2.31.2, < 2.31.4, >= 2.32.1, < 2.32.3, >= 2.37, < 2.37.1, >= 2.35.2, < 2.35.4) est présent sur votre parc.
- Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
- À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
- Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.
Références
- https://github.com/git/git/security/advisories/GHSA-j342-m5hw-rr3v
- https://github.blog/2022-04-12-git-security-vulnerability-announced
- https://lore.kernel.org/git/xmqqv8s2fefi.fsf%40gitster.g/T/#u
- http://www.openwall.com/lists/oss-security/2022/07/14/1
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TRZG5CDUQ27OWTPC5MQOR4UASNXHWEZS/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDI325LOO2XBDDKLINOAQJEG6MHAURZE/
- https://support.apple.com/kb/HT213496
- http://seclists.org/fulldisclosure/2022/Nov/1
- https://lists.debian.org/debian-lts-announce/2022/12/msg00025.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DIKWISWUDFT2FAITYIA6372BVLH3OOOC/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YROCMBWYFKRSS64PO6FUNM6L7LKBUKVW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVOLER2PIGMHPQMDGG4RDE2KZB74QLA2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UDZRZAL7QULOB6V7MKT66MOMWJLBJPX4/
- https://security.gentoo.org/glsa/202312-15
- https://security.gentoo.org/glsa/202401-17
