A flaw was found in the QEMU Guest Agent (qga). A local unprivileged user can exploit a vulnerability in the guest-ssh-add-authorized-keys command handler by manipulating symbolic links. This can occur either through a deterministic directory-symlink bypass or a Time-of-Check to Time-of-Use (TOCTOU) file-symlink race. Successful exploitation allows the attacker to gain ownership of arbitrary root-owned files or directories, leading to root access. This vulnerability requires an external management layer (e.g., libvirt) to trigger the affected code path.
Exploitability
AV:LAC:LPR:LUI:RScope
S:UImpact
C:HI:HA:H7.3/CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:HOther