CVE-2011-4862

Exp

Buffer overflow in libtelnet/encrypt.c in telnetd in FreeBSD 7.3 through 9.0, MIT Kerberos Version 5 Applications (aka krb5-appl) 1.0.2 and earlier, Heimdal 1.5.1 and earlier, GNU inetutils, and possibly other products allows remote attackers to execute arbitrary code via a long encryption key, as exploited in the wild in December 2011.

公開： 2011-12-24 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-2011-4862 綜合評估為高可利用風險（92.7/100）：CVSS 技術影響為嚴重級，利用機率偏高（EPSS 95.10%，百分位 100%） 已收錄 4 筆公開利用參考（Exploit-DB）。 近一日 EPSS 上升 +2.72%，被利用關注度持續升高。 存在公開利用—請盤點暴露面、落實緩解措施並優先修補。

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-2011-4862 的公開 exploit 引用（Exploit-DB）

EDB-ID 來源 類型 公開時間 連結
18368 exploit_db edb 2012-01-14 Exploit-DB ↗
18369 exploit_db edb 2012-01-14 Exploit-DB ↗
18280 exploit_db edb 2011-12-26 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

CVE-2011-4862 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 92.38% 95.10% +2.72%
2 2026-06-13 92.58% 92.38% -0.20%
3 2025-12-01 — 92.58% —

完整 EPSS 歷史 （共 18 筆）

CVE-2011-4862 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
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C 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:C)
機密性被完全破壞。
完整性影響 (I:C)
完整性被完全破壞。
可用性影響 (A:C)
可用性被完全破壞。
 10.0 10.0 [email protected]

CVE-2011-4862 的弱點列舉

CVE-2011-4862 的 OS 追蹤

vendor priority summary link
debian high CVE-2011-4862 high priority: Debian including 3 source packages (heimdal, inetutils, krb5), 15 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 15. https://security-tracker.debian.org/tracker/CVE-2011-4862
gentoo high CVE-2011-4862: 2 GLSA(s) (201201-14, 201202-05), 2 atom(s) (app-crypt/heimdal, app-crypt/mit-krb5-appl); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-4862
redhat critical — https://access.redhat.com/security/cve/CVE-2011-4862
ubuntu medium CVE-2011-4862 medium priority: Ubuntu including 4 source packages (heimdal, inetutils, krb5, krb5-appl), 68 status rows across 17 suites (hardy, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 31, ignored 25, DNE 8, needs-triage 2, released 2. https://ubuntu.com/security/CVE-2011-4862

CVE-2011-4862 的影響軟體 / 設定

廠商 產品 版本 原始 CPE
gnu inetutils < 1.9 cpe:2.3:a:gnu:inetutils:*:*:*:*:*:*:*:*
heimdal_project heimdal <= 1.5.1 cpe:2.3:a:heimdal_project:heimdal:*:*:*:*:*:*:*:*
mit krb5-appl <= 1.0.2 cpe:2.3:a:mit:krb5-appl:*:*:*:*:*:*:*:*
freebsd freebsd >= 7.3, <= 9.0 cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
fedoraproject fedora 15 cpe:2.3:o:fedoraproject:fedora:15:*:*:*:*:*:*:*
fedoraproject fedora 16 cpe:2.3:o:fedoraproject:fedora:16:*:*:*:*:*:*:*
debian debian_linux 5.0 cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
opensuse opensuse 11.3 cpe:2.3:o:opensuse:opensuse:11.3:*:*:*:*:*:*:*
opensuse opensuse 11.4 cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*
suse linux_enterprise_desktop 10 cpe:2.3:o:suse:linux_enterprise_desktop:10:sp4:*:*:-:*:*:*
suse linux_enterprise_desktop 11 cpe:2.3:o:suse:linux_enterprise_desktop:11:sp1:*:*:*:*:*:*
suse linux_enterprise_server 9 cpe:2.3:o:suse:linux_enterprise_server:9:*:*:*:*:*:*:*
suse linux_enterprise_server 10 cpe:2.3:o:suse:linux_enterprise_server:10:sp2:*:*:*:*:*:*
suse linux_enterprise_server 10 cpe:2.3:o:suse:linux_enterprise_server:10:sp3:*:*:ltss:*:*:*
suse linux_enterprise_server 10 cpe:2.3:o:suse:linux_enterprise_server:10:sp4:*:*:-:*:*:*
suse linux_enterprise_server 11 cpe:2.3:o:suse:linux_enterprise_server:11:sp1:*:*:*:-:*:*
suse linux_enterprise_server 11 cpe:2.3:o:suse:linux_enterprise_server:11:sp1:*:*:-:vmware:*:*
suse linux_enterprise_software_development_kit 10 cpe:2.3:o:suse:linux_enterprise_software_development_kit:10:sp4:*:*:*:*:*:*
suse linux_enterprise_software_development_kit 11 cpe:2.3:o:suse:linux_enterprise_software_development_kit:11:sp1:*:*:*:*:*:*

CVE-2011-4862 的參考連結

URL 標籤
http://archives.neohapsis.com/archives/bugtraq/2011-12/0172.html Broken Link
http://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=665f1e73cdd9b38e2d2e11b8db9958a315935592 Patch Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071627.html Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071640.html Third Party Advisory
http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006117.html Vendor Advisory
http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006118.html Vendor Advisory
http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006119.html Vendor Advisory
http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006120.html Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00002.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00004.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00005.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00007.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00010.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00011.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00014.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00015.html Mailing List Third Party Advisory
http://osvdb.org/78020 Broken Link
http://secunia.com/advisories/46239 Third Party Advisory
http://secunia.com/advisories/47341 Third Party Advisory
http://secunia.com/advisories/47348 Third Party Advisory
http://secunia.com/advisories/47357 Third Party Advisory
http://secunia.com/advisories/47359 Third Party Advisory
http://secunia.com/advisories/47373 Third Party Advisory
http://secunia.com/advisories/47374 Third Party Advisory
http://secunia.com/advisories/47397 Third Party Advisory
http://secunia.com/advisories/47399 Third Party Advisory
http://secunia.com/advisories/47441 Third Party Advisory
http://security.freebsd.org/advisories/FreeBSD-SA-11:08.telnetd.asc Mitigation Vendor Advisory
http://security.freebsd.org/patches/SA-11:08/telnetd.patch Patch Vendor Advisory
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2011-008.txt Patch Vendor Advisory
http://www.debian.org/security/2011/dsa-2372 Third Party Advisory
http://www.debian.org/security/2011/dsa-2373 Third Party Advisory
http://www.debian.org/security/2011/dsa-2375 Third Party Advisory
http://www.exploit-db.com/exploits/18280/ Exploit Third Party Advisory VDB Entry
http://www.mandriva.com/security/advisories?name=MDVSA-2011:195 Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-1851.html Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-1852.html Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-1853.html Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-1854.html Third Party Advisory
http://www.securitytracker.com/id?1026460 Third Party Advisory VDB Entry
http://www.securitytracker.com/id?1026463 Third Party Advisory VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/71970 Third Party Advisory VDB Entry
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