CVE-2026-33542
MEDIUM4.8EPSS 0.02%Incus does not verify combined fingerprint when downloading images from simplestreams servers in github.com/lxc/incus
發布日:2026/3/27修改日:2026/4/28
描述
Incus is a system container and virtual machine manager. Prior to version 6.23.0, a lack of validation of the image fingerprint when downloading from simplestreams image servers opens the door to image cache poisoning and under very narrow circumstances exposes other tenants to running attacker controlled images rather than the expected one. Version 6.23.0 patches the issue.
受影響套件(5)
- Debian/incusfrom 0, < 6.0.4-2+deb13u5
- Debian/lxdfrom 0, < 5.0.2-5+deb12u4
- Go/github.com/lxc/incusfrom 0
- Go/github.com/lxc/incus/v6from 0, < 6.23.0
- Go/github.com/lxc/incus/v6/clientfrom 0, < 6.23.0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:L/VI:H/VA:N/SC:H/SI:L/SA:N |
| osv | CVSS 3.1 | MEDIUM4.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N |
參考連結(9)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-33542
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2026-33542
- PATCHhttps://github.com/lxc/incus
- WEBhttps://github.com/lxc/incus/commit/04e97418189f743411884afb81a3384e6218b8cd
- WEBhttps://github.com/lxc/incus/commit/4a80447c52d6bc05d3322feeb5395f581e7a80e4
- WEBhttps://github.com/lxc/incus/commit/72688b7d9400c8f3c17ad0f93a7c1aeb89627307
- WEBhttps://github.com/lxc/incus/commit/ee26f72524ab60a4abcfd4e52667c52bb24364fc
- WEBhttps://github.com/lxc/incus/releases/tag/v6.23.0
- WEBhttps://github.com/lxc/incus/security/advisories/GHSA-p8mm-23gg-jc9r