high7.8
CVE-2021-44730
snapd 2.54.2 did not properly validate the location of the snap-confine binary.
Impact
snapd 2.54.2 did not properly validate the location of the snap-confine binary. A local attacker who can hardlink this binary to another location to cause snap-confine to execute other arbitrary binaries and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Canonical | Snapd | through 2.54.2 |
| Canonical | Ubuntu Linux | Versions 18.04, 20.04, 21.10 |
| Fedoraproject | Fedora | Versions 34, 35 |
| Debian | Debian Linux | Versions 10.0, 11.0 |
Weakness classification
References
- NVD record
- CVE.org record
- http://www.openwall.com/lists/oss-security/2022/02/18/2
- http://www.openwall.com/lists/oss-security/2022/02/23/1
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/
- https://ubuntu.com/security/notices/USN-5292-1
- https://www.debian.org/security/2022/dsa-5080
- http://www.openwall.com/lists/oss-security/2022/02/18/2
- http://www.openwall.com/lists/oss-security/2022/02/23/1
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/
- https://ubuntu.com/security/notices/USN-5292-1
- https://www.debian.org/security/2022/dsa-5080