CVE-2011-4539

dhcpd in ISC DHCP 4.x before 4.2.3-P1 and 4.1-ESV before 4.1-ESV-R4 does not properly handle regular expressions in dhcpd.conf, which allows remote attackers to cause a denial of service (daemon crash) via a crafted request packet.

公開： 2011-12-08 最後更新： 2026-06-16 指派方： [email protected] 來源： [email protected]
NVD 狀態：Modified，CVE 狀態： published
檢視： NVD, CVE.org, EUVD

CVE-2011-4539 綜合評估為中等風險（48.7/100）：CVSS 技術影響為中級，利用機率偏高（EPSS 15.48%，百分位 96%） EPSS 顯示該漏洞近期被利用的可能性處於高位。 被利用機率偏高—請盤點暴露面並優先安排修補。

風險隨態勢動態變化；本站持續評估並同步更新本頁展示內容。

CVE-2011-4539 的 EPSS（利用預測評分）

EPSS 日更估計相對被利用可能性；百分位表示該 CVE 在已評分漏洞中的相對排名（越高表示相對更嚴重）。

# 日期 舊 EPSS 分數 新 EPSS 分數 變化（新 − 舊）
1 2026-06-15 32.27% 15.48% -16.79%
2 2026-04-29 26.43% 32.27% +5.84%
3 2026-03-26 — 26.43% —

完整 EPSS 歷史 （共 16 筆）

CVE-2011-4539 的 CVSS 指標

該 CVE 的 CVSS 指標。

底座分 版本 嚴重度 向量 可利用性 影響 分數來源
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P 點擊展開
存取路徑 (AV:N)
只要路由可達，即可從遠端發動利用。
存取複雜度 (AC:L)
步驟短、路徑清楚，重現成本低。
認證 (AU:N)
全程無需有效身分。
機密性影響 (C:N)
對機密性無影響。
完整性影響 (I:N)
對完整性無影響。
可用性影響 (A:P)
可用性受到部分損害。
 10.0 2.9 [email protected]

CVE-2011-4539 的弱點列舉

CVE-2011-4539 的 OS 追蹤

vendor priority summary link
debian low CVE-2011-4539 low priority: Debian including 1 source packages (isc-dhcp), 4 status rows across 4 suites (bookworm, bullseye, sid, trixie): resolved 4. https://security-tracker.debian.org/tracker/CVE-2011-4539
gentoo normal CVE-2011-4539: 1 GLSA(s) (201301-06), 1 atom(s) (net-misc/dhcp); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-4539
redhat medium — https://access.redhat.com/security/cve/CVE-2011-4539
suse medium CVE-2011-4539 severity moderate: SUSE including 56 source package names (dhcp-4.2.3.P2-0.7.2, dhcp-4.2.4.P2-0.16.15, …), 88 product×package rows across 33 product lines (SUSE Linux Enterprise Desktop 12, SUSE Linux Enterprise Desktop 12 SP1, … (33 product lines)): Fixed 88. https://www.suse.com/security/cve/CVE-2011-4539/
ubuntu medium CVE-2011-4539 medium priority: Ubuntu including 2 source packages (dhcp3, isc-dhcp), 12 status rows across 6 suites (hardy, lucid, maverick, natty, oneiric, upstream): DNE 5, not-affected 3, released 3, needs-triage 1. https://ubuntu.com/security/CVE-2011-4539

CVE-2011-4539 的影響軟體 / 設定

廠商 產品 版本 原始 CPE
isc dhcp 4.0 cpe:2.3:a:isc:dhcp:4.0:*:*:*:*:*:*:*
isc dhcp 4.0.0 cpe:2.3:a:isc:dhcp:4.0.0:*:*:*:*:*:*:*
isc dhcp 4.0.1 cpe:2.3:a:isc:dhcp:4.0.1:-:*:*:*:*:*:*
isc dhcp 4.0.1 cpe:2.3:a:isc:dhcp:4.0.1:b1:*:*:*:*:*:*
isc dhcp 4.0.1 cpe:2.3:a:isc:dhcp:4.0.1:rc1:*:*:*:*:*:*
isc dhcp 4.0.2 cpe:2.3:a:isc:dhcp:4.0.2:-:*:*:*:*:*:*
isc dhcp 4.0.2 cpe:2.3:a:isc:dhcp:4.0.2:b1:*:*:*:*:*:*
isc dhcp 4.0.2 cpe:2.3:a:isc:dhcp:4.0.2:b2:*:*:*:*:*:*
isc dhcp 4.0.2 cpe:2.3:a:isc:dhcp:4.0.2:b3:*:*:*:*:*:*
isc dhcp 4.0.2 cpe:2.3:a:isc:dhcp:4.0.2:rc1:*:*:*:*:*:*
isc dhcp 4.0.3 cpe:2.3:a:isc:dhcp:4.0.3:-:*:*:*:*:*:*
isc dhcp 4.0.3 cpe:2.3:a:isc:dhcp:4.0.3:b1:*:*:*:*:*:*
isc dhcp 4.0.3 cpe:2.3:a:isc:dhcp:4.0.3:rc1:*:*:*:*:*:*
isc dhcp 4.1.1 cpe:2.3:a:isc:dhcp:4.1.1:b3:*:*:*:*:*:*
isc dhcp 4.1.1 cpe:2.3:a:isc:dhcp:4.1.1:rc1:*:*:*:*:*:*
isc dhcp 4.1.2 cpe:2.3:a:isc:dhcp:4.1.2:*:*:*:*:*:*:*
isc dhcp 4.2.0 cpe:2.3:a:isc:dhcp:4.2.0:-:*:*:*:*:*:*
isc dhcp 4.2.0 cpe:2.3:a:isc:dhcp:4.2.0:a1:*:*:*:*:*:*
isc dhcp 4.2.0 cpe:2.3:a:isc:dhcp:4.2.0:a2:*:*:*:*:*:*
isc dhcp 4.2.0 cpe:2.3:a:isc:dhcp:4.2.0:b1:*:*:*:*:*:*
isc dhcp 4.2.0 cpe:2.3:a:isc:dhcp:4.2.0:b2:*:*:*:*:*:*
isc dhcp 4.2.0 cpe:2.3:a:isc:dhcp:4.2.0:p1:*:*:*:*:*:*
isc dhcp 4.2.0 cpe:2.3:a:isc:dhcp:4.2.0:rc1:*:*:*:*:*:*
isc dhcp 4.2.1 cpe:2.3:a:isc:dhcp:4.2.1:-:*:*:*:*:*:*
isc dhcp 4.2.1 cpe:2.3:a:isc:dhcp:4.2.1:b1:*:*:*:*:*:*
isc dhcp 4.2.1 cpe:2.3:a:isc:dhcp:4.2.1:rc1:*:*:*:*:*:*
isc dhcp 4.2.2 cpe:2.3:a:isc:dhcp:4.2.2:-:*:*:*:*:*:*
isc dhcp 4.2.2 cpe:2.3:a:isc:dhcp:4.2.2:b1:*:*:*:*:*:*
isc dhcp 4.2.2 cpe:2.3:a:isc:dhcp:4.2.2:rc1:*:*:*:*:*:*
isc dhcp 4.2.3 cpe:2.3:a:isc:dhcp:4.2.3:-:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:-:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r1:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r2:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r3:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r3_b1:*:*:*:*:*:*
canonical ubuntu_linux 11.04 cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:*
canonical ubuntu_linux 11.10 cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:*
debian debian_linux 6.0 cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*

CVE-2011-4539 的參考連結

URL 標籤
http://lists.fedoraproject.org/pipermail/package-announce/2011-December/070980.html Mailing List Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071549.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2011-12/msg00006.html Mailing List Third Party Advisory
http://secunia.com/advisories/47153 Third Party Advisory
http://secunia.com/advisories/47178 Third Party Advisory
http://security.gentoo.org/glsa/glsa-201301-06.xml Third Party Advisory
http://www.debian.org/security/2012/dsa-2519 Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2011:182 Third Party Advisory
http://www.securityfocus.com/bid/50971 Third Party Advisory VDB Entry
http://www.securitytracker.com/id?1026393 Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-1309-1 Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/71680 Third Party Advisory VDB Entry
https://www.isc.org/software/dhcp/advisories/cve-2011-4539 Vendor Advisory
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