CVE-2018-1000005

描述

libcurl 7.49.0 to and including 7.57.0 contains an out bounds read in code handling HTTP/2 trailers. It was reported (https://github.com/curl/curl/pull/2231) that reading an HTTP/2 trailer could mess up future trailers since the stored size was one byte less than required. The problem is that the code that creates HTTP/1-like headers from the HTTP/2 trailer data once appended a string like `:` to the target buffer, while this was recently changed to `: ` (a space was added after the colon) but the following math wasn't updated correspondingly. When accessed, the data is read out of bounds and causes either a crash or that the (too large) data gets passed to client write. This could lead to a denial-of-service situation or an information disclosure if someone has a service that echoes back or uses the trailers for something.

如何修補 CVE-2018-1000005

要修補 CVE-2018-1000005,請將受影響套件升級到下列已修補版本。

• —升級至 7.58.0-r0 或更新版本
• —升級至 7.58.0-1 或更新版本

CVE-2018-1000005 正在被利用嗎?

低 — EPSS 為 4.6%,目前沒有觀察到大規模利用活動。

受影響套件(2)

• from 0, < 7.58.0-r0
• from 0, < 7.58.0-1

CVSS 分數

參考連結(2)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2018-1000005
• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2018-1000005