CVE-2017-15597

描述

An issue was discovered in Xen through 4.9.x. Grant copying code made an implication that any grant pin would be accompanied by a suitable page reference. Other portions of code, however, did not match up with that assumption. When such a grant copy operation is being done on a grant of a dying domain, the assumption turns out wrong. A malicious guest administrator can cause hypervisor memory corruption, most likely resulting in host crash and a Denial of Service. Privilege escalation and information leaks cannot be ruled out.

如何修補 CVE-2017-15597

要修補 CVE-2017-15597,請將受影響套件升級到下列已修補版本。

• —升級至 4.9.0-r7 或更新版本
• —升級至 4.8.2+xsa245-0+deb9u1 或更新版本

CVE-2017-15597 正在被利用嗎?

低 — EPSS 為 2.8%,目前沒有觀察到大規模利用活動。

受影響套件(2)

• from 0, < 4.9.0-r7
• from 0, < 4.8.2+xsa245-0+deb9u1

CVSS 分數

參考連結(2)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2017-15597
• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2017-15597