CVE-2024-21626
runc - security update
Description
runc is a CLI tool for spawning and running containers on Linux according to the OCI specification. In runc 1.1.11 and earlier, due to an internal file descriptor leak, an attacker could cause a newly-spawned container process (from runc exec) to have a working directory in the host filesystem namespace, allowing for a container escape by giving access to the host filesystem ("attack 2"). The same attack could be used by a malicious image to allow a container process to gain access to the host filesystem through runc run ("attack 1"). Variants of attacks 1 and 2 could be also be used to overwrite semi-arbitrary host binaries, allowing for complete container escapes ("attack 3a" and "attack 3b"). runc 1.1.12 includes patches for this issue.
How to fix CVE-2024-21626
To remediate CVE-2024-21626, upgrade the affected package to a fixed version below.
- —upgrade to 1.0.0~rc93+ds1-5+deb11u3 or later
- —upgrade to 1.0.0~rc93+ds1-5+deb11u3 or later
- —upgrade to 1.1.12 or later
- —upgrade to 1.1.12 or later
Is CVE-2024-21626 being exploited?
Moderate — EPSS is 5.1%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (4)
- from 0, < 1.0.0~rc93+ds1-5+deb11u3
- from 0, < 1.0.0~rc93+ds1-5+deb11u3
- >= 1.0.0-rc93, < 1.1.12
- >= 1.0.0-rc93, < 1.1.12
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.6 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |