CVE-2011-2536
EPSS 1.9%
描述
chan_sip.c in the SIP channel driver in Asterisk Open Source 1.4.x before 1.4.41.2, 1.6.2.x before 1.6.2.18.2, and 1.8.x before 1.8.4.4, and Asterisk Business Edition C.3.x before C.3.7.3, disregards the alwaysauthreject option and generates different responses for invalid SIP requests depending on whether the user account exists, which allows remote attackers to enumerate account names via a series of requests.
如何修補 CVE-2011-2536
要修補 CVE-2011-2536,請將受影響套件升級到下列已修補版本。
- Debian/asterisk—升級至 1:1.8.4.4~dfsg-1 或更新版本
CVE-2011-2536 正在被利用嗎?
低 — EPSS 為 1.9%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- from 0, < 1:1.8.4.4~dfsg-1