NVD Vulnerability Detail

CVE-2015-5400

Summary	Squid before 3.5.6 does not properly handle CONNECT method peer responses when configured with cache_peer, which allows remote attackers to bypass intended restrictions and gain access to a backend proxy via a CONNECT request.
Publication Date	Sept. 29, 2015, 5:59 a.m.
Registration Date	Jan. 26, 2021, 2:52 p.m.
Last Update	Nov. 21, 2024, 11:32 a.m.

CVSS2.0 : MEDIUM
Score	6.8
Vector	AV:N/AC:M/Au:N/C:P/I:P/A:P
攻撃元区分(AV)	ネットワーク
攻撃条件の複雑さ(AC)	中
攻撃前の認証要否(Au)	不要
機密性への影響(C)	低
完全性への影響(I)	低
可用性への影響(A)	低
Get all privileges.	いいえ
Get user privileges	いいえ
Get other privileges	いいえ
User operation required	いいえ

Affected software configurations

Configuration1		or higher	or less	more than	less than
cpe:2.3:o:fedoraproject:fedora:22:::::::*

Configuration2	or higher	or less	more than	less than
cpe:2.3:o:debian:debian_linux:8.0:::::::*
cpe:2.3:o:debian:debian_linux:7.0:::::::*

Configuration3		or higher	or less	more than	less than
cpe:2.3:a:squid-cache:squid::::::::			3.5.2

Related information, measures and tools

No	URL	タグ
1	http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183598.html
2	http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183598.html
3	http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html
4	http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html
5	http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html
6	http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html
7	http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html
8	http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html
9	http://www.debian.org/security/2015/dsa-3327
10	http://www.debian.org/security/2015/dsa-3327
11	http://www.openwall.com/lists/oss-security/2015/07/06/8
12	http://www.openwall.com/lists/oss-security/2015/07/06/8
13	http://www.openwall.com/lists/oss-security/2015/07/09/12
14	http://www.openwall.com/lists/oss-security/2015/07/09/12
15	http://www.openwall.com/lists/oss-security/2015/07/10/2
16	http://www.openwall.com/lists/oss-security/2015/07/10/2
17	http://www.openwall.com/lists/oss-security/2015/07/17/14	Exploit
18	http://www.openwall.com/lists/oss-security/2015/07/17/14	Exploit
19	http://www.securityfocus.com/bid/75553
20	http://www.securityfocus.com/bid/75553
21	http://www.securitytracker.com/id/1032873
22	http://www.securitytracker.com/id/1032873
23	http://www.squid-cache.org/Advisories/SQUID-2015_2.txt	Vendor Advisory
24	http://www.squid-cache.org/Advisories/SQUID-2015_2.txt	Vendor Advisory
25	http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10494.patch	Exploit Vendor Advisory
26	http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10494.patch	Exploit Vendor Advisory
27	http://www.squid-cache.org/Versions/v3/3.4/changesets/squid-3.4-13225.patch	Exploit Vendor Advisory
28	http://www.squid-cache.org/Versions/v3/3.4/changesets/squid-3.4-13225.patch	Exploit Vendor Advisory
29	http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13856.patch	Exploit Vendor Advisory
30	http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13856.patch	Exploit Vendor Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-264	認可・権限・アクセス制御	https://cwe.mitre.org/data/definitions/264.html

JVN Vulnerability Information

Squid における制限を回避される脆弱性

Title	Squid における制限を回避される脆弱性
Summary	Squid は、cache_peer が設定されている場合、CONNECT メソッドピアのレスポンスを適切に処理しないため、制限を回避され、バックエンドプロキシへのアクセス権を取得される脆弱性が存在します。
Possible impacts	第三者により、CONNECT リクエストを介して、制限を回避され、バックエンドプロキシへのアクセス権を取得される可能性があります。
Solution	ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。
Publication Date	July 6, 2015, midnight
Registration Date	Oct. 1, 2015, 3:44 p.m.
Last Update	Oct. 1, 2015, 3:44 p.m.

Affected System

Squid-cache.org

Squid 3.5.6 未満

CVE (情報セキュリティ共通脆弱性識別子)

No	Name	URL
Common Vulnerabilities and Exposures (CVE)
1	CVE-2015-5400	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5400
National Vulnerability Database (NVD)
2	CVE-2015-5400	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-5400

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-264	https://jvndb.jvn.jp/ja/cwe/CWE-264.html

ベンダー情報

No	Name	URL
Squid Proxy Cache Security Update Advisory
1	SQUID-2015:2	http://www.squid-cache.org/Advisories/SQUID-2015_2.txt
Squid-cache.org
2	squid-3.1-10494.patch	http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10494.patch
3	squid-3.4-13225.patch	http://www.squid-cache.org/Versions/v3/3.4/changesets/squid-3.4-13225.patch
4	squid-3.5-13856.patch	http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13856.patch

その他

No	Name	URL
関連文書
1	Squid HTTP proxy CVE request	http://www.openwall.com/lists/oss-security/2015/07/06/8

Change Log

No	Changed Details	Date of change
0	[2015年10月01日] 掲載	Feb. 17, 2018, 10:37 a.m.