CVE-2023-30549
published 2023-04-25CVE-2023-30549: 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…
PriorityP343high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.37%
29.1th percentile
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.
Affected
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apptainer | apptainer | < 1.1.8 | 1.1.8 |
| debian | singularity-container | < singularity-container 3.11.4+ds1-1 (sid) | singularity-container 3.11.4+ds1-1 (sid) |
| github.com | apptainer_apptainer | >= 0 < 1.1.8 | 1.1.8 |
| lfprojects | apptainer | < 1.1.8 | 1.1.8 |
| redhat | enterprise_linux | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
ghsa5.5MEDIUM
osv7.8HIGH
vendor_debian7.1LOW
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OSV
Unpatched extfs vulnerabilities are exploitable through suid-mode Apptainer in github.com/apptainer/apptainer
osv·2024-08-20
CVE-2023-30549 Unpatched extfs vulnerabilities are exploitable through suid-mode Apptainer in github.com/apptainer/apptainer
Unpatched extfs vulnerabilities are exploitable through suid-mode Apptainer in github.com/apptainer/apptainer
Unpatched extfs vulnerabilities are exploitable through suid-mode Apptainer in github.com/apptainer/apptainer
OSV
Unpatched extfs vulnerabilities are exploitable through suid-mode Apptainer
osv·2023-04-25·CVSS 5.5
CVE-2023-30549 [MEDIUM] Unpatched extfs vulnerabilities are exploitable through suid-mode Apptainer
Unpatched extfs vulnerabilities are exploitable through suid-mode Apptainer
### Impact
There is an ext4 use-after-free flaw described in CVE-2022-1184 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.
### Background
Historically there have been many CVEs published for extfs and a smaller number for squashfs, including serious use-after-free and buffer overrun vulnerabilities, that are sco
OSV
CVE-2023-30549: Apptainer is an open source container platform for Linux
osv·2023-04-25·CVSS 7.8
CVE-2023-30549 [HIGH] CVE-2023-30549: Apptainer is an open source container platform for Linux
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. Ei
GHSA
Unpatched extfs vulnerabilities are exploitable through suid-mode Apptainer
ghsa·2023-04-25·CVSS 5.5
CVE-2023-30549 [MEDIUM] CWE-416 Unpatched extfs vulnerabilities are exploitable through suid-mode Apptainer
Unpatched extfs vulnerabilities are exploitable through suid-mode Apptainer
### Impact
There is an ext4 use-after-free flaw described in CVE-2022-1184 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.
### Background
Historically there have been many CVEs published for extfs and a smaller number for squashfs, including serious use-after-free and buffer overrun vulnerabilities, that are sco
Debian
CVE-2023-30549: singularity-container - Apptainer is an open source container platform for Linux. There is an ext4 use-a...
vendor_debian·2023·CVSS 7.1
CVE-2023-30549 [HIGH] CVE-2023-30549: singularity-container - Apptainer is an open source container platform for Linux. There is an ext4 use-a...
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. Ei
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://access.redhat.com/security/cve/cve-2022-1184https://github.com/apptainer/apptainer/commit/5a4964f5ba9c8d89a0e353b97f51fd607670a9f7https://github.com/apptainer/apptainer/releases/tag/v1.1.8https://github.com/apptainer/apptainer/security/advisories/GHSA-j4rf-7357-f4cghttps://github.com/torvalds/linux/commit/2220eaf90992c11d888fe771055d4de3303https://github.com/torvalds/linux/commit/4f04351888a83e595571de672e0a4a8b74fhttps://lwn.net/Articles/932136/https://lwn.net/Articles/932137/https://security-tracker.debian.org/tracker/CVE-2022-1184https://security.gentoo.org/glsa/202311-13https://sylabs.io/2023/04/response-to-cve-2023-30549/https://ubuntu.com/security/CVE-2022-1184https://www.suse.com/security/cve/CVE-2022-1184.htmlhttps://access.redhat.com/security/cve/cve-2022-1184https://github.com/apptainer/apptainer/commit/5a4964f5ba9c8d89a0e353b97f51fd607670a9f7https://github.com/apptainer/apptainer/releases/tag/v1.1.8https://github.com/apptainer/apptainer/security/advisories/GHSA-j4rf-7357-f4cghttps://github.com/torvalds/linux/commit/2220eaf90992c11d888fe771055d4de3303https://github.com/torvalds/linux/commit/4f04351888a83e595571de672e0a4a8b74fhttps://lwn.net/Articles/932136/https://lwn.net/Articles/932137/https://security-tracker.debian.org/tracker/CVE-2022-1184https://security.gentoo.org/glsa/202311-13https://sylabs.io/2023/04/response-to-cve-2023-30549/https://ubuntu.com/security/CVE-2022-1184https://www.suse.com/security/cve/CVE-2022-1184.html
2023-04-25
Published