一、漏洞信息
漏洞编号：CVE-2023-30549
漏洞归属组件：apptainer
漏洞归属的版本：1.1.6
CVSS V3.0分值：
BaseScore：7.8 High
Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
漏洞简述：
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.
漏洞公开时间：2023-04-26 05:15:10
漏洞创建时间：2023-05-27 00:29:59
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2023-30549

漏洞分析指导链接：
https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
漏洞数据来源:
openBrain开源漏洞感知系统
漏洞补丁信息：

二、漏洞分析结构反馈
影响性分析说明：

openEuler评分：
7.8
Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
受影响版本排查(受影响/不受影响)：
2.openEuler-24.03-LTS(1.1.6):
3.master(1.1.6):
4.openEuler-22.03-LTS-SP4(1.1.6):
5.openEuler-24.03-LTS-SP2(1.1.6):

修复是否涉及abi变化(是/否)：
2.openEuler-24.03-LTS(1.1.6):
3.master(1.1.6):
4.openEuler-22.03-LTS-SP4(1.1.6):
5.openEuler-24.03-LTS-SP2(1.1.6):

原因说明：
1.master(1.1.6):
2.openEuler-20.03-LTS-SP4:
3.openEuler-22.03-LTS-SP3(1.1.6):
4.openEuler-22.03-LTS-SP4(1.1.6):
5.openEuler-24.03-LTS(1.1.6):
6.openEuler-24.03-LTS-Next(1.1.6):
7.openEuler-24.03-LTS-SP1(1.1.6):
8.openEuler-24.03-LTS-SP2(1.1.6):