Using a specially-crafted repository, Git can be tricked into using its local clone optimization even when using a non-local transport. Though Git will abort local clones whose source $GIT_DIR/objects directory contains symbolic links (c.f., CVE-2022-39253), the objects directory itself may still be a symbolic link. These two may be combined to include arbitrary files based on known paths on the victim's filesystem within the malicious repository's working copy, allowing for data exfiltration in a similar manner as CVE-2022-39253.
Created git tracking bugs for this issue: Affects: fedora-all [bug 2170907]
This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2023:3245 https://access.redhat.com/errata/RHSA-2023:3245
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2023:3246 https://access.redhat.com/errata/RHSA-2023:3246
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2023-22490
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.6 Extended Update Support Via RHSA-2024:0407 https://access.redhat.com/errata/RHSA-2024:0407