CVE-2009-2666 — fetchmail - SSL certificate verification weakness

描述

socket.c in fetchmail before 6.3.11 does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

如何修補 CVE-2009-2666

要修補 CVE-2009-2666,請將受影響套件升級到下列已修補版本。

Debian/fetchmail—升級至 6.3.9~rc2-6 或更新版本
Debian/fetchmail—升級至 6.3.6-1etch2 或更新版本

CVE-2009-2666 正在被利用嗎?

低 — EPSS 為 1.5%,目前沒有觀察到大規模利用活動。

受影響套件(2)

from 0, < 6.3.9~rc2-6
from 0, < 6.3.6-1etch2

參考連結(1)

ADVISORYsecurity-tracker.debian.org/tracker/CVE-2009-2666