CVE-2017-1000100
curl - security update
描述
When doing a TFTP transfer and curl/libcurl is given a URL that contains a very long file name (longer than about 515 bytes), the file name is truncated to fit within the buffer boundaries, but the buffer size is still wrongly updated to use the untruncated length. This too large value is then used in the sendto() call, making curl attempt to send more data than what is actually put into the buffer. The endto() function will then read beyond the end of the heap based buffer. A malicious HTTP(S) server could redirect a vulnerable libcurl-using client to a crafted TFTP URL (if the client hasn't restricted which protocols it allows redirects to) and trick it to send private memory contents to a remote server over UDP. Limit curl's redirect protocols with --proto-redir and libcurl's with CURLOPT_REDIR_PROTOCOLS.
如何修補 CVE-2017-1000100
要修補 CVE-2017-1000100,請將受影響套件升級到下列已修補版本。
- —升級至 7.55.0-r0 或更新版本
- —升級至 7.55.0-1 或更新版本
- —升級至 7.26.0-1+wheezy20 或更新版本
- —升級至 7.38.0-4+deb8u6 或更新版本
CVE-2017-1000100 正在被利用嗎?
低 — EPSS 為 4.0%,目前沒有觀察到大規模利用活動。
受影響套件(4)
- from 0, < 7.55.0-r0
- from 0, < 7.55.0-1
- from 0, < 7.26.0-1+wheezy20
- from 0, < 7.38.0-4+deb8u6
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |