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Advisories

Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 Arbitrary File Write via Recursive File Pull

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Severity
medium
Date
Affecting

  • incus >= 0, < 6.0.7

  • incus >= 6.1.0, < 7.0.2

  • incus >= 7.1.0, < 7.5.0

CWE
  • CWE-59 Improper Link Resolution Before File Access ('Link Following')
CVSS
6.9
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N
Credit
stgraber, palkeo
Description
Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write vulnerability in sftpRecursivePullFile that allows a malicious incus-agent to escape the target directory during incus file pull -r. Attackers with root in a virtual machine can return duplicate entries reported first as symlinks then as files or directories, writing attacker-controlled files such as /etc/shadow on the operator's host.

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