CVE-2015-0204

The ssl3_get_key_exchange function in s3_clnt.c in OpenSSL before 0.9.8zd, 1.0.0 before 1.0.0p, and 1.0.1 before 1.0.1k allows remote SSL servers to conduct RSA-to-EXPORT_RSA downgrade attacks and facilitate brute-force decryption by offering a weak ephemeral RSA key in a noncompliant role, related to the "FREAK" issue. NOTE: the scope of this CVE is only client code based on OpenSSL, not EXPORT_RSA issues associated with servers or other TLS implementations.

公開: 2015-01-08 最終更新: 2026-06-16 Assigner: [email protected] ソース: [email protected]

総合評価: CVE-2015-0204 は中リスク(57.2/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 98.69%、100 パーセンタイル) 根拠: EPSS 上、短期間での悪用可能性は高い水準です。 直近 1 日で EPSS が +6.74% 上昇。悪用への関心が高まっている可能性があります。 推奨対応: 悪用可能性が高いため、影響範囲の確認と修補の優先付けを推奨します。

リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。

CVE-2015-0204 の EPSS(Exploit Prediction Scoring System)スコア

EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置(高いほど相対的に深刻)を示します。

# 日付 旧 EPSS スコア 新 EPSS スコア Δ(新 − 旧)
1 2026-06-15 91.94% 98.69% +6.74%
2 2026-05-14 91.99% 91.94% -0.05%
3 2026-05-06 91.99%

EPSS の全履歴 (全 65 件)

CVE-2015-0204 の CVSS(Common Vulnerability Scoring System)指標

この CVE の CVSS 指標。

ベーススコア バージョン 深刻度 ベクトル 悪用しやすさ 影響 スコアの出典
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N クリックして展開
アクセス経路 (AV:N)
ルーティング可能なネットワーク越しに、遠隔から到達・悪用しうる。
アクセスの複雑さ (AC:M)
多少の有利条件は要るが、極端なレアケースではない。
認証 (AU:N)
認証を経ずに攻撃を完結できる。
機密性への影響 (C:N)
機密性は損なわれない。
完全性への影響 (I:P)
完全性は部分的に損なわれる。
可用性への影響 (A:N)
可用性は損なわれない。
8.6 2.9 [email protected]

CVE-2015-0204 の弱点分類(列挙)

CVE-2015-0204 の OS トラッカー

vendor priority summary link
debian not yet assigned CVE-2015-0204 not yet assigned priority: Debian including 1 source packages (openssl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2015-0204
gentoo normal CVE-2015-0204: 1 GLSA(s) (201503-11), 1 atom(s) (dev-libs/openssl); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-0204
redhat medium https://access.redhat.com/security/cve/CVE-2015-0204
suse critical https://www.suse.com/security/cve/CVE-2015-0204/
ubuntu low CVE-2015-0204 low priority: Ubuntu including 2 source packages (openssl, openssl098), 28 status rows across 14 suites (artful, bionic, cosmic, disco, lucid, precise, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): released 15, DNE 10, ignored 3. https://ubuntu.com/security/CVE-2015-0204

CVE-2015-0204 の影響を受けるソフトウェア/構成

ベンダー 製品 バージョン 生の CPE
openssl openssl <= 0.9.8zc cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
openssl openssl 1.0.0a cpe:2.3:a:openssl:openssl:1.0.0a:*:*:*:*:*:*:*
openssl openssl 1.0.0b cpe:2.3:a:openssl:openssl:1.0.0b:*:*:*:*:*:*:*
openssl openssl 1.0.0c cpe:2.3:a:openssl:openssl:1.0.0c:*:*:*:*:*:*:*
openssl openssl 1.0.0d cpe:2.3:a:openssl:openssl:1.0.0d:*:*:*:*:*:*:*
openssl openssl 1.0.0e cpe:2.3:a:openssl:openssl:1.0.0e:*:*:*:*:*:*:*
openssl openssl 1.0.0f cpe:2.3:a:openssl:openssl:1.0.0f:*:*:*:*:*:*:*
openssl openssl 1.0.0g cpe:2.3:a:openssl:openssl:1.0.0g:*:*:*:*:*:*:*
openssl openssl 1.0.0h cpe:2.3:a:openssl:openssl:1.0.0h:*:*:*:*:*:*:*
openssl openssl 1.0.0i cpe:2.3:a:openssl:openssl:1.0.0i:*:*:*:*:*:*:*
openssl openssl 1.0.0j cpe:2.3:a:openssl:openssl:1.0.0j:*:*:*:*:*:*:*
openssl openssl 1.0.0k cpe:2.3:a:openssl:openssl:1.0.0k:*:*:*:*:*:*:*
openssl openssl 1.0.0l cpe:2.3:a:openssl:openssl:1.0.0l:*:*:*:*:*:*:*
openssl openssl 1.0.0m cpe:2.3:a:openssl:openssl:1.0.0m:*:*:*:*:*:*:*
openssl openssl 1.0.0n cpe:2.3:a:openssl:openssl:1.0.0n:*:*:*:*:*:*:*
openssl openssl 1.0.0o cpe:2.3:a:openssl:openssl:1.0.0o:*:*:*:*:*:*:*
openssl openssl 1.0.1a cpe:2.3:a:openssl:openssl:1.0.1a:*:*:*:*:*:*:*
openssl openssl 1.0.1b cpe:2.3:a:openssl:openssl:1.0.1b:*:*:*:*:*:*:*
openssl openssl 1.0.1c cpe:2.3:a:openssl:openssl:1.0.1c:*:*:*:*:*:*:*
openssl openssl 1.0.1d cpe:2.3:a:openssl:openssl:1.0.1d:*:*:*:*:*:*:*
openssl openssl 1.0.1e cpe:2.3:a:openssl:openssl:1.0.1e:*:*:*:*:*:*:*
openssl openssl 1.0.1f cpe:2.3:a:openssl:openssl:1.0.1f:*:*:*:*:*:*:*
openssl openssl 1.0.1g cpe:2.3:a:openssl:openssl:1.0.1g:*:*:*:*:*:*:*
openssl openssl 1.0.1h cpe:2.3:a:openssl:openssl:1.0.1h:*:*:*:*:*:*:*
openssl openssl 1.0.1i cpe:2.3:a:openssl:openssl:1.0.1i:*:*:*:*:*:*:*
openssl openssl 1.0.1j cpe:2.3:a:openssl:openssl:1.0.1j:*:*:*:*:*:*:*

CVE-2015-0204 の参考情報

URL タグ
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10679
http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00021.html
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00027.html
http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00026.html
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00014.html
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00015.html
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00022.html
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00031.html
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00011.html
http://marc.info/?l=bugtraq&m=142496179803395&w=2
http://marc.info/?l=bugtraq&m=142496289803847&w=2
http://marc.info/?l=bugtraq&m=142720981827617&w=2
http://marc.info/?l=bugtraq&m=142721102728110&w=2
http://marc.info/?l=bugtraq&m=142895206924048&w=2
http://marc.info/?l=bugtraq&m=143213830203296&w=2
http://marc.info/?l=bugtraq&m=143748090628601&w=2
http://marc.info/?l=bugtraq&m=144043644216842&w=2
http://marc.info/?l=bugtraq&m=144050155601375&w=2
http://marc.info/?l=bugtraq&m=144050205101530&w=2
http://marc.info/?l=bugtraq&m=144050254401665&w=2
http://marc.info/?l=bugtraq&m=144050297101809&w=2
http://rhn.redhat.com/errata/RHSA-2015-0066.html
http://rhn.redhat.com/errata/RHSA-2015-0800.html
http://rhn.redhat.com/errata/RHSA-2015-0849.html
http://rhn.redhat.com/errata/RHSA-2016-1650.html
http://support.novell.com/security/cve/CVE-2015-0204.html
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150310-ssl
http://www-01.ibm.com/support/docview.wss?uid=swg21883640
http://www-304.ibm.com/support/docview.wss?uid=swg21960769
http://www.debian.org/security/2015/dsa-3125
http://www.mandriva.com/security/advisories?name=MDVSA-2015:019
http://www.mandriva.com/security/advisories?name=MDVSA-2015:062
http://www.mandriva.com/security/advisories?name=MDVSA-2015:063
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
http://www.oracle.com/technetwork/topics/security/cpuapr2015-2365600.html
http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
http://www.securityfocus.com/bid/71936
http://www.securityfocus.com/bid/91787
http://www.securitytracker.com/id/1033378
https://bto.bluecoat.com/security-advisory/sa88
https://bto.bluecoat.com/security-advisory/sa91
https://exchange.xforce.ibmcloud.com/vulnerabilities/99707
https://freakattack.com/ Vendor Advisory
https://github.com/openssl/openssl/commit/ce325c60c74b0fa784f5872404b722e120e5cab0
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04773241
https://kc.mcafee.com/corporate/index?page=content&id=SB10102
https://kc.mcafee.com/corporate/index?page=content&id=SB10108
https://kc.mcafee.com/corporate/index?page=content&id=SB10110
https://security.gentoo.org/glsa/201503-11
https://support.apple.com/HT204659
https://support.citrix.com/article/CTX216642
https://www.openssl.org/news/secadv_20150108.txt Vendor Advisory
https://www.openssl.org/news/secadv_20150319.txt
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