CVE-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 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.
References
Link Resource
https://access.redhat.com/security/cve/cve-2022-1184 Not Applicable
https://github.com/apptainer/apptainer/commit/5a4964f5ba9c8d89a0e353b97f51fd607670a9f7 Patch
https://github.com/apptainer/apptainer/releases/tag/v1.1.8 Release Notes
https://github.com/apptainer/apptainer/security/advisories/GHSA-j4rf-7357-f4cg Mitigation Vendor Advisory
https://github.com/torvalds/linux/commit/2220eaf90992c11d888fe771055d4de3303
https://github.com/torvalds/linux/commit/4f04351888a83e595571de672e0a4a8b74f
https://lwn.net/Articles/932136/
https://lwn.net/Articles/932137/
https://security-tracker.debian.org/tracker/CVE-2022-1184 Not Applicable
https://security.gentoo.org/glsa/202311-13
https://sylabs.io/2023/04/response-to-cve-2023-30549/
https://ubuntu.com/security/CVE-2022-1184 Not Applicable
https://www.suse.com/security/cve/CVE-2022-1184.html Not Applicable
https://access.redhat.com/security/cve/cve-2022-1184 Not Applicable
https://github.com/apptainer/apptainer/commit/5a4964f5ba9c8d89a0e353b97f51fd607670a9f7 Patch
https://github.com/apptainer/apptainer/releases/tag/v1.1.8 Release Notes
https://github.com/apptainer/apptainer/security/advisories/GHSA-j4rf-7357-f4cg Mitigation Vendor Advisory
https://github.com/torvalds/linux/commit/2220eaf90992c11d888fe771055d4de3303
https://github.com/torvalds/linux/commit/4f04351888a83e595571de672e0a4a8b74f
https://lwn.net/Articles/932136/
https://lwn.net/Articles/932137/
https://security-tracker.debian.org/tracker/CVE-2022-1184 Not Applicable
https://security.gentoo.org/glsa/202311-13
https://sylabs.io/2023/04/response-to-cve-2023-30549/
https://ubuntu.com/security/CVE-2022-1184 Not Applicable
https://www.suse.com/security/cve/CVE-2022-1184.html Not Applicable
Configurations

Configuration 1 (hide)

cpe:2.3:a:lfprojects:apptainer:*:*:*:*:*:go:*:*

Configuration 2 (hide)

cpe:2.3:a:sylabs:singularity:*:*:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

History

21 Nov 2024, 08:00

Type Values Removed Values Added
References () https://access.redhat.com/security/cve/cve-2022-1184 - Not Applicable () https://access.redhat.com/security/cve/cve-2022-1184 - Not Applicable
References () https://github.com/apptainer/apptainer/commit/5a4964f5ba9c8d89a0e353b97f51fd607670a9f7 - Patch () https://github.com/apptainer/apptainer/commit/5a4964f5ba9c8d89a0e353b97f51fd607670a9f7 - Patch
References () https://github.com/apptainer/apptainer/releases/tag/v1.1.8 - Release Notes () https://github.com/apptainer/apptainer/releases/tag/v1.1.8 - Release Notes
References () https://github.com/apptainer/apptainer/security/advisories/GHSA-j4rf-7357-f4cg - Mitigation, Vendor Advisory () https://github.com/apptainer/apptainer/security/advisories/GHSA-j4rf-7357-f4cg - Mitigation, Vendor Advisory
References () https://github.com/torvalds/linux/commit/2220eaf90992c11d888fe771055d4de3303 - () https://github.com/torvalds/linux/commit/2220eaf90992c11d888fe771055d4de3303 -
References () https://github.com/torvalds/linux/commit/4f04351888a83e595571de672e0a4a8b74f - () https://github.com/torvalds/linux/commit/4f04351888a83e595571de672e0a4a8b74f -
References () https://lwn.net/Articles/932136/ - () https://lwn.net/Articles/932136/ -
References () https://lwn.net/Articles/932137/ - () https://lwn.net/Articles/932137/ -
References () https://security-tracker.debian.org/tracker/CVE-2022-1184 - Not Applicable () https://security-tracker.debian.org/tracker/CVE-2022-1184 - Not Applicable
References () https://security.gentoo.org/glsa/202311-13 - () https://security.gentoo.org/glsa/202311-13 -
References () https://sylabs.io/2023/04/response-to-cve-2023-30549/ - () https://sylabs.io/2023/04/response-to-cve-2023-30549/ -
References () https://ubuntu.com/security/CVE-2022-1184 - Not Applicable () https://ubuntu.com/security/CVE-2022-1184 - Not Applicable
References () https://www.suse.com/security/cve/CVE-2022-1184.html - Not Applicable () https://www.suse.com/security/cve/CVE-2022-1184.html - Not Applicable
CVSS v2 : unknown
v3 : 7.8
v2 : unknown
v3 : 7.1

25 Nov 2023, 12:15

Type Values Removed Values Added
References
  • () https://security.gentoo.org/glsa/202311-13 -

08 Jul 2023, 00:15

Type Values Removed Values Added
References
  • (MISC) https://lwn.net/Articles/932137/ -
  • (MISC) https://sylabs.io/2023/04/response-to-cve-2023-30549/ -
  • (MISC) https://github.com/torvalds/linux/commit/2220eaf90992c11d888fe771055d4de3303 -
  • (MISC) https://github.com/torvalds/linux/commit/4f04351888a83e595571de672e0a4a8b74f -
  • (MISC) https://lwn.net/Articles/932136/ -
Summary 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, installations that include apptainer-suid < 1.1.8, and all versions of Singularity in their default configurations 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 (or singularity.conf for singularity versions). 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. 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.

26 May 2023, 21:15

Type Values Removed Values Added
Summary 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, installations that include apptainer-suid < 1.1.8, and all versions of Singularity in their default configurations 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 (or singularity.conf for singularity versions). 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. 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, installations that include apptainer-suid < 1.1.8, and all versions of Singularity in their default configurations 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 (or singularity.conf for singularity versions). 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.

Information

Published : 2023-04-25 21:15

Updated : 2024-11-21 08:00


NVD link : CVE-2023-30549

Mitre link : CVE-2023-30549

CVE.ORG link : CVE-2023-30549


JSON object : View

Products Affected

lfprojects

  • apptainer

redhat

  • enterprise_linux

sylabs

  • singularity
CWE
CWE-416

Use After Free