Detections
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Alpine: multiple apptainer packages: security update to 1.1.8-r0
high Tenable Cloud Security Plugin ID 408062
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- Apptainer is an open source container platform for Linux. There is an ext4 use-after-free flaw that is
exploitable through versions of Apptainer < 1.1.0 and installations that include apptainer-suid < 1.1.8 on
older operating systems where that CVE has not been patched. That includes Red Hat Enterprise Linux 7,
Debian 10 buster (unless the linux-5.10 package is installed), Ubuntu 18.04 bionic and Ubuntu 20.04 focal.
Use-after-free flaws in the kernel can be used to attack the kernel for denial of service and potentially
for privilege escalation. Apptainer 1.1.8 includes a patch that by default disables mounting of extfs
filesystem types in setuid-root mode, while continuing to allow mounting of extfs filesystems in non-
setuid "rootless" mode using fuse2fs. Some workarounds are possible. Either do not install apptainer-suid
(for versions 1.1.0 through 1.1.7) or set `allow setuid = no` in apptainer.conf. This requires having
unprivileged user namespaces enabled and except for apptainer 1.1.x versions will disallow mounting of sif
files, extfs files, and squashfs files in addition to other, less significant impacts. (Encrypted sif
files are also not supported unprivileged in apptainer 1.1.x.). Alternatively, use the `limit containers`
options in apptainer.conf/singularity.conf to limit sif files to trusted users, groups, and/or paths, and
set `allow container extfs = no` to disallow mounting of extfs overlay files. The latter option by itself
does not disallow mounting of extfs overlay partitions inside SIF files, so that's why the former options
are also needed. (CVE-2023-30549)
See Also
Plugin Details
Severity: High
ID: 408062
Version: Revision 1.28
Type: Local
Published: 12/7/2023
Updated: 7/2/2026
Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
Percentile: 57.58
CVSS v2
Risk Factor: Medium
Base Score: 6.8
Temporal Score: 5
Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C
CVSS Score Source: CVE-2023-30549
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
Exploit Ease: No known exploits are available
Vulnerability Publication Date: 4/25/2023
Reference Information
CVE: CVE-2023-30549