NVD Vulnerability Detail

CVE-2016-7969

Summary	The wrap_lines_smart function in ass_render.c in libass before 0.13.4 allows remote attackers to cause a denial of service (out-of-bounds read) via unspecified vectors, related to "0/3 line wrapping equalization."
Publication Date	March 4, 2017, 1:59 a.m.
Registration Date	Jan. 26, 2021, 2:18 p.m.
Last Update	Nov. 21, 2024, 11:58 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:opensuse:leap:42.1:::::::*
cpe:2.3:o:opensuse:opensuse:13.2:::::::*

Configuration2	or higher	or less	more than	less than
cpe:2.3:o:fedoraproject:fedora:25:::::::*
cpe:2.3:o:fedoraproject:fedora:24:::::::*
cpe:2.3:o:fedoraproject:fedora:23:::::::*

Configuration3		or higher	or less	more than	less than
cpe:2.3:a:libass_project:libass::::::::			0.13.3

Related information, measures and tools

No	URL	タグ
1	http://lists.opensuse.org/opensuse-updates/2016-12/msg00068.html	Third Party Advisory
2	http://lists.opensuse.org/opensuse-updates/2016-12/msg00068.html	Third Party Advisory
3	http://www.openwall.com/lists/oss-security/2016/10/05/2	Mailing List Patch Third Party Advisory
4	http://www.openwall.com/lists/oss-security/2016/10/05/2	Mailing List Patch Third Party Advisory
5	http://www.securityfocus.com/bid/93358	Third Party Advisory VDB Entry
6	http://www.securityfocus.com/bid/93358	Third Party Advisory VDB Entry
7	https://bugzilla.redhat.com/show_bug.cgi?id=1381960	Issue Tracking Patch
8	https://bugzilla.redhat.com/show_bug.cgi?id=1381960	Issue Tracking Patch
9	https://github.com/libass/libass/commit/f4f48950788b91c6a30029cc28a240b834713ea7	Patch Vendor Advisory
10	https://github.com/libass/libass/commit/f4f48950788b91c6a30029cc28a240b834713ea7	Patch Vendor Advisory
11	https://github.com/libass/libass/releases/tag/0.13.4	Patch Release Notes Third Party Advisory
12	https://github.com/libass/libass/releases/tag/0.13.4	Patch Release Notes Third Party Advisory
13	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KW6DNERYHPI5Y6SQYU3XKTVSCOWMIHUC/
14	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KW6DNERYHPI5Y6SQYU3XKTVSCOWMIHUC/
15	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7JJ2SGVOX6UQQIRMVC3QACJLKHE2PYN/
16	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7JJ2SGVOX6UQQIRMVC3QACJLKHE2PYN/
17	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUOUOK3VULMMZTNSCRFCNPDAPDWAVK7X/
18	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUOUOK3VULMMZTNSCRFCNPDAPDWAVK7X/
19	https://security.gentoo.org/glsa/201702-25	Patch Third Party Advisory VDB Entry
20	https://security.gentoo.org/glsa/201702-25	Patch Third Party Advisory VDB Entry

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-125	境界外読み取り	https://cwe.mitre.org/data/definitions/125.html

JVN Vulnerability Information

libass の ass_render.c の wrap_lines_smart 関数におけるサービス運用妨害 (DoS) の脆弱性

Title	libass の ass_render.c の wrap_lines_smart 関数におけるサービス運用妨害 (DoS) の脆弱性
Summary	libass の ass_render.c の wrap_lines_smart 関数には、サービス運用妨害 (境界外読み取り) 状態にされる脆弱性が存在します。
Possible impacts	リモートの攻撃者により、サービス運用妨害 (境界外読み取り) 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	Oct. 5, 2016, midnight
Registration Date	March 23, 2017, 4:34 p.m.
Last Update	March 23, 2017, 4:34 p.m.

Affected System

Fedora Project

Fedora 23

Fedora 24

Fedora 25

openSUSE project

openSUSE 13.2

openSUSE Leap 42.1

libass project

libass 0.13.4 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-2016-7969	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7969
National Vulnerability Database (NVD)
2	CVE-2016-7969	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-7969

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-125	https://cwe.mitre.org/data/definitions/125.html

ベンダー情報

No	Name	URL
Fedora Update Notification
1	FEDORA-2016-282507c3e9	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KW6DNERYHPI5Y6SQYU3XKTVSCOWMIHUC/
2	FEDORA-2016-95407a836f	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R7JJ2SGVOX6UQQIRMVC3QACJLKHE2PYN/
3	FEDORA-2016-d2a05a0644	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VUOUOK3VULMMZTNSCRFCNPDAPDWAVK7X/
GitHub
4	Fix issues found by fuzzing #240	https://github.com/libass/libass/pull/240/commits/b72b283b936a600c730e00875d7d067bded3fc26
5	Release 0.13.4	https://github.com/libass/libass/releases/tag/0.13.4
opensuse-updates
6	openSUSE-SU-2016:3087	https://lists.opensuse.org/opensuse-updates/2016-12/msg00068.html
Red Hat Bugzilla
7	Bug 1381960	https://bugzilla.redhat.com/show_bug.cgi?id=1381960

Change Log

No	Changed Details	Date of change
0	[2017年03月23日] 掲載	Feb. 17, 2018, 10:37 a.m.