中危 xen xen 不加限制或调节的资源分配

CVE编号

CVE-2022-42318

利用情况

暂无

补丁情况

官方补丁

披露时间

2022-11-01
漏洞描述
Xenstore: guests can let run xenstored out of memory T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Malicious guests can cause xenstored to allocate vast amounts of memory, eventually resulting in a Denial of Service (DoS) of xenstored. There are multiple ways how guests can cause large memory allocations in xenstored: - - by issuing new requests to xenstored without reading the responses, causing the responses to be buffered in memory - - by causing large number of watch events to be generated via setting up multiple xenstore watches and then e.g. deleting many xenstore nodes below the watched path - - by creating as many nodes as allowed with the maximum allowed size and path length in as many transactions as possible - - by accessing many nodes inside a transaction
解决建议
建议您更新当前系统或软件至最新版,完成漏洞的修复。
受影响软件情况
# 类型 厂商 产品 版本 影响面
1
运行在以下环境
系统 alpine_3.14 xen * Up to
(excluding)
4.15.4-r0
运行在以下环境
系统 alpine_3.15 xen * Up to
(excluding)
4.15.4-r0
运行在以下环境
系统 alpine_3.16 xen * Up to
(excluding)
4.16.3-r0
运行在以下环境
系统 alpine_3.17 xen * Up to
(excluding)
4.16.3-r0
运行在以下环境
系统 alpine_3.18 xen * Up to
(excluding)
4.17.0-r0
运行在以下环境
系统 alpine_3.19 xen * Up to
(excluding)
4.17.0-r0
运行在以下环境
系统 debian_11 xen * Up to
(excluding)
4.14.5+86-g1c354767d5-1
运行在以下环境
系统 debian_12 xen * Up to
(excluding)
4.16.2+90-g0d39a6d1ae-1
运行在以下环境
系统 fedora_35 xen * Up to
(excluding)
4.15.3-7.fc35
运行在以下环境
系统 fedora_36 xen * Up to
(excluding)
4.16.2-3.fc36
运行在以下环境
系统 fedora_37 xen * Up to
(excluding)
4.16.2-4.fc37
运行在以下环境
系统 opensuse_5.2 xen-libs * Up to
(excluding)
4.14.5_08-150300.3.40.1
运行在以下环境
系统 opensuse_Leap_15.3 xen * Up to
(excluding)
4.14.5_08-150300.3.40.1
运行在以下环境
系统 opensuse_Leap_15.4 xen * Up to
(excluding)
4.16.2_08-150400.4.16.1
运行在以下环境
系统 suse_12_SP5 xen * Up to
(excluding)
4.12.4_30-3.82.1
运行在以下环境
系统 xen xen - -
阿里云评分
6.1
  • 攻击路径
    本地
  • 攻击复杂度
    复杂
  • 权限要求
    普通权限
  • 影响范围
    越权影响
  • EXP成熟度
    未验证
  • 补丁情况
    官方补丁
  • 数据保密性
    数据泄露
  • 数据完整性
    无影响
  • 服务器危害
    无影响
  • 全网数量
    N/A
CWE-ID 漏洞类型
CWE-770 不加限制或调节的资源分配
阿里云安全产品覆盖情况