NVD Vulnerability Detail

CVE-2017-6056

Summary	It was discovered that a programming error in the processing of HTTPS requests in the Apache Tomcat servlet and JSP engine may result in denial of service via an infinite loop. The denial of service is easily achievable as a consequence of backporting a CVE-2016-6816 fix but not backporting the fix for Tomcat bug 57544. Distributions affected by this backporting issue include Debian (before 7.0.56-3+deb8u8 and 8.0.14-1+deb8u7 in jessie) and Ubuntu.
Publication Date	Feb. 17, 2017, 4:59 p.m.
Registration Date	Jan. 26, 2021, 1:26 p.m.
Last Update	Nov. 21, 2024, 12:29 p.m.

CVSS3.0 : HIGH
スコア	7.5
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
攻撃元区分(AV)	ネットワーク
攻撃条件の複雑さ(AC)	低
攻撃に必要な特権レベル(PR)	不要
利用者の関与(UI)	不要
影響の想定範囲(S)	変更なし
機密性への影響(C)	なし
完全性への影響(I)	なし
可用性への影響(A)	高

CVSS2.0 : MEDIUM
Score	5.0
Vector	AV:N/AC:L/Au:N/C:N/I:N/A:P
攻撃元区分(AV)	ネットワーク
攻撃条件の複雑さ(AC)	低
攻撃前の認証要否(Au)	不要
機密性への影響(C)	なし
完全性への影響(I)	なし
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:canonical:ubuntu_linux:12.04::::lts:::
cpe:2.3:o:debian:debian_linux:8.0:::::::*
cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::

Related information, measures and tools

No	URL	タグ
1	http://rhn.redhat.com/errata/RHSA-2017-0517.html	Third Party Advisory
2	http://rhn.redhat.com/errata/RHSA-2017-0517.html	Third Party Advisory
3	http://rhn.redhat.com/errata/RHSA-2017-0826.html	Third Party Advisory
4	http://rhn.redhat.com/errata/RHSA-2017-0826.html	Third Party Advisory
5	http://rhn.redhat.com/errata/RHSA-2017-0827.html	Third Party Advisory
6	http://rhn.redhat.com/errata/RHSA-2017-0827.html	Third Party Advisory
7	http://rhn.redhat.com/errata/RHSA-2017-0828.html	Third Party Advisory
8	http://rhn.redhat.com/errata/RHSA-2017-0828.html	Third Party Advisory
9	http://rhn.redhat.com/errata/RHSA-2017-0829.html	Third Party Advisory
10	http://rhn.redhat.com/errata/RHSA-2017-0829.html	Third Party Advisory
11	http://www.debian.org/security/2017/dsa-3787	Third Party Advisory
12	http://www.debian.org/security/2017/dsa-3787	Third Party Advisory
13	http://www.debian.org/security/2017/dsa-3788	Third Party Advisory
14	http://www.debian.org/security/2017/dsa-3788	Third Party Advisory
15	http://www.securityfocus.com/bid/96293	Third Party Advisory VDB Entry
16	http://www.securityfocus.com/bid/96293	Third Party Advisory VDB Entry
17	http://www.securitytracker.com/id/1037860	Third Party Advisory VDB Entry
18	http://www.securitytracker.com/id/1037860	Third Party Advisory VDB Entry
19	https://bugs.debian.org/851304	Issue Tracking Third Party Advisory
20	https://bugs.debian.org/851304	Issue Tracking Third Party Advisory
21	https://bz.apache.org/bugzilla/show_bug.cgi?id=60578	Issue Tracking Third Party Advisory
22	https://bz.apache.org/bugzilla/show_bug.cgi?id=60578	Issue Tracking Third Party Advisory
23	https://lists.apache.org/thread.html/6b414817c2b0bf351138911c8c922ec5dd577ebc0b9a7f42d705752d%40%3Cissues.activemq.apache.org%3E
24	https://lists.apache.org/thread.html/6b414817c2b0bf351138911c8c922ec5dd577ebc0b9a7f42d705752d%40%3Cissues.activemq.apache.org%3E
25	https://lists.apache.org/thread.html/ac51944aef91dd5006b8510b0bef337adaccfe962fb90e7af9c22db4%40%3Cissues.activemq.apache.org%3E
26	https://lists.apache.org/thread.html/ac51944aef91dd5006b8510b0bef337adaccfe962fb90e7af9c22db4%40%3Cissues.activemq.apache.org%3E
27	https://lists.debian.org/debian-security-announce/2017/msg00038.html	Third Party Advisory
28	https://lists.debian.org/debian-security-announce/2017/msg00038.html	Third Party Advisory
29	https://lists.debian.org/debian-security-announce/2017/msg00039.html	Third Party Advisory
30	https://lists.debian.org/debian-security-announce/2017/msg00039.html	Third Party Advisory
31	https://security.netapp.com/advisory/ntap-20180731-0002/	Third Party Advisory
32	https://security.netapp.com/advisory/ntap-20180731-0002/	Third Party Advisory
33	https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
34	https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-835	無限ループ	https://cwe.mitre.org/data/definitions/835.html

JVN Vulnerability Information

Apache Tomcat サーブレットおよび JSP エンジンの HTTPS リクエストの処理におけるサービス運用妨害 (DoS) の脆弱性

Title	Apache Tomcat サーブレットおよび JSP エンジンの HTTPS リクエストの処理におけるサービス運用妨害 (DoS) の脆弱性
Summary	Apache Tomcat サーブレットおよび JSP エンジンの HTTPS リクエストの処理には、サービス運用妨害 (無限ループ) 状態にされる脆弱性が存在します。本問題は、CVE-2016-6816 の修正をバックポートしたものの、Tomcat bug 57544 の修正をバックポートしていないために引き起こされます。
Possible impacts	攻撃者により、HTTPS リクエストの処理のプログラミングエラーを介して、サービス運用妨害 (無限ループ) 状態にされる可能性があります。
Solution	ベンダ情報および参考情報を参照して適切な対策を実施してください。
Publication Date	Jan. 12, 2017, midnight
Registration Date	April 4, 2017, 5:42 p.m.
Last Update	April 4, 2017, 5:42 p.m.

Affected System

Apache Software Foundation

Apache Tomcat

Debian

Debian GNU/Linux 8.0

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-2017-6056	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-6056
National Vulnerability Database (NVD)
2	CVE-2017-6056	https://nvd.nist.gov/vuln/detail/CVE-2017-6056

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-19	https://cwe.mitre.org/data/definitions/19.html

ベンダー情報

No	Name	URL
Apache Bugzilla
1	Bug 60578	https://bz.apache.org/bugzilla/show_bug.cgi?id=60578
Debian Bug report logs
2	851304	https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=851304
Debian Security Advisory
3	DSA-3787	https://lists.debian.org/debian-security-announce/2017/msg00038.html
4	DSA-3788	https://lists.debian.org/debian-security-announce/2017/msg00039.html

Change Log

No	Changed Details	Date of change
0	[2017年04月04日] 掲載	Feb. 17, 2018, 10:37 a.m.