NVD Vulnerability Detail

CVE-2016-10196

Summary	Stack-based buffer overflow in the evutil_parse_sockaddr_port function in evutil.c in libevent before 2.1.6-beta allows attackers to cause a denial of service (segmentation fault) via vectors involving a long string in brackets in the ip_as_string argument.
Publication Date	March 16, 2017, 12:59 a.m.
Registration Date	Jan. 26, 2021, 2:05 p.m.
Last Update	Nov. 21, 2024, 11:43 a.m.

CVSS3.1 : HIGH
スコア	7.5
Vector	CVSS:3.1/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:debian:debian_linux:8.0:::::::*

Configuration2		or higher	or less	more than	less than
cpe:2.3:a:libevent_project:libevent::::::::			2.1.5

Configuration3	or higher	or less	more than	less than
cpe:2.3:a:mozilla:thunderbird::::::::				52.1.0
cpe:2.3:a:mozilla:firefox::::::::				53.0
cpe:2.3:a:mozilla:firefox_esr::::::::				45.9.0
cpe:2.3:a:mozilla:firefox:52.0:::::::*

Related information, measures and tools

No	URL	タグ
1	http://www.debian.org/security/2017/dsa-3789	Third Party Advisory
2	http://www.debian.org/security/2017/dsa-3789	Third Party Advisory
3	http://www.openwall.com/lists/oss-security/2017/01/31/17	Mailing List Third Party Advisory
4	http://www.openwall.com/lists/oss-security/2017/01/31/17	Mailing List Third Party Advisory
5	http://www.openwall.com/lists/oss-security/2017/02/02/7	Mailing List Third Party Advisory
6	http://www.openwall.com/lists/oss-security/2017/02/02/7	Mailing List Third Party Advisory
7	http://www.securityfocus.com/bid/96014	Third Party Advisory VDB Entry
8	http://www.securityfocus.com/bid/96014	Third Party Advisory VDB Entry
9	http://www.securitytracker.com/id/1038320	Broken Link Third Party Advisory VDB Entry
10	http://www.securitytracker.com/id/1038320	Broken Link Third Party Advisory VDB Entry
11	https://access.redhat.com/errata/RHSA-2017:1104	Third Party Advisory
12	https://access.redhat.com/errata/RHSA-2017:1104	Third Party Advisory
13	https://access.redhat.com/errata/RHSA-2017:1106	Third Party Advisory
14	https://access.redhat.com/errata/RHSA-2017:1106	Third Party Advisory
15	https://access.redhat.com/errata/RHSA-2017:1201	Third Party Advisory
16	https://access.redhat.com/errata/RHSA-2017:1201	Third Party Advisory
17	https://bugzilla.mozilla.org/show_bug.cgi?id=1343453	Issue Tracking Third Party Advisory
18	https://bugzilla.mozilla.org/show_bug.cgi?id=1343453	Issue Tracking Third Party Advisory
19	https://github.com/libevent/libevent/blob/release-2.1.6-beta/ChangeLog	Release Notes Third Party Advisory
20	https://github.com/libevent/libevent/blob/release-2.1.6-beta/ChangeLog	Release Notes Third Party Advisory
21	https://github.com/libevent/libevent/commit/329acc18a0768c21ba22522f01a5c7f46cacc4d5	Patch Third Party Advisory
22	https://github.com/libevent/libevent/commit/329acc18a0768c21ba22522f01a5c7f46cacc4d5	Patch Third Party Advisory
23	https://github.com/libevent/libevent/issues/318	Exploit Issue Tracking Third Party Advisory
24	https://github.com/libevent/libevent/issues/318	Exploit Issue Tracking Third Party Advisory
25	https://security.gentoo.org/glsa/201705-01	Third Party Advisory
26	https://security.gentoo.org/glsa/201705-01	Third Party Advisory
27	https://www.mozilla.org/security/advisories/mfsa2017-10/	Third Party Advisory
28	https://www.mozilla.org/security/advisories/mfsa2017-10/	Third Party Advisory
29	https://www.mozilla.org/security/advisories/mfsa2017-11/	Third Party Advisory
30	https://www.mozilla.org/security/advisories/mfsa2017-11/	Third Party Advisory
31	https://www.mozilla.org/security/advisories/mfsa2017-12/	Third Party Advisory
32	https://www.mozilla.org/security/advisories/mfsa2017-12/	Third Party Advisory
33	https://www.mozilla.org/security/advisories/mfsa2017-13/	Third Party Advisory
34	https://www.mozilla.org/security/advisories/mfsa2017-13/	Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-787	境界外書き込み	https://cwe.mitre.org/data/definitions/787.html

JVN Vulnerability Information

libevent の evutil.c 内の evutil_parse_sockaddr_port 関数におけるスタックベースのバッファオーバーフローの脆弱性

Title	libevent の evutil.c 内の evutil_parse_sockaddr_port 関数におけるスタックベースのバッファオーバーフローの脆弱性
Summary	libevent の evutil.c 内の evutil_parse_sockaddr_port 関数には、スタックベースのバッファオーバーフローの脆弱性が存在します。
Possible impacts	攻撃者により、ip_as_string 引数のブラケット内の過度に長い文字数に関する問題によって、サービス運用妨害 (セグメンテーション違反) 状態に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 4, 2016, midnight
Registration Date	April 11, 2017, 7:51 p.m.
Last Update	April 11, 2017, 7:51 p.m.

Affected System

Debian

Debian GNU/Linux 8.0

libevent_project

libevent 2.1.6-beta 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-2016-10196	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-10196
National Vulnerability Database (NVD)
2	CVE-2016-10196	https://nvd.nist.gov/vuln/detail/CVE-2016-10196

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-119	https://jvndb.jvn.jp/ja/cwe/CWE-119.html

ベンダー情報

No	Name	URL
Debian Security Advisory
1	DSA-3789-1	http://www.debian.org/security/2017/dsa-3789
libevent_project
2	ChangeLog	https://github.com/libevent/libevent/blob/release-2.1.6-beta/ChangeLog
3	evutil_parse_sockaddr_port(): fix buffer overflow	https://github.com/libevent/libevent/commit/329acc18a0768c21ba22522f01a5c7f46cacc4d5
4	libevent (stack) buffer overflow in evutil_parse_sockaddr_port()	https://github.com/libevent/libevent/issues/318

Change Log

No	Changed Details	Date of change
0	[2017年04月11日] 掲載	Feb. 17, 2018, 10:37 a.m.