NVD Vulnerability Detail

CVE-2015-5523

Summary	The ParseValue function in lexer.c in tidy before 4.9.31 allows remote attackers to cause a denial of service (crash) via vectors involving multiple whitespace characters before an empty href, which triggers a large memory allocation.
Publication Date	Aug. 11, 2015, 11:59 p.m.
Registration Date	Jan. 26, 2021, 2:52 p.m.
Last Update	Nov. 21, 2024, 11:33 a.m.

CVSS2.0 : MEDIUM
Score	4.3
Vector	AV:N/AC:M/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)	中
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	はい

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:canonical:ubuntu_linux:14.04::::lts:::
cpe:2.3:o:canonical:ubuntu_linux:15.04:::::::*

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:o:apple:mac_os_x::::::::		10.6.8
cpe:2.3:o:apple:watchos::::::::		1.0.1
cpe:2.3:o:apple:iphone_os::::::::		8.2

Configuration4		or higher	or less	more than	less than
cpe:2.3:a:htacg:tidy::::::::			4.9.30

Related information, measures and tools

No	URL	タグ
1	http://lists.apple.com/archives/security-announce/2015/Sep/msg00001.html	Mailing List Third Party Advisory
2	http://lists.apple.com/archives/security-announce/2015/Sep/msg00001.html	Mailing List Third Party Advisory
3	http://lists.apple.com/archives/security-announce/2015/Sep/msg00005.html	Mailing List Third Party Advisory
4	http://lists.apple.com/archives/security-announce/2015/Sep/msg00005.html	Mailing List Third Party Advisory
5	http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html	Mailing List Third Party Advisory
6	http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html	Mailing List Third Party Advisory
7	http://www.debian.org/security/2015/dsa-3309	Third Party Advisory
8	http://www.debian.org/security/2015/dsa-3309	Third Party Advisory
9	http://www.openwall.com/lists/oss-security/2015/06/04/2	Exploit
10	http://www.openwall.com/lists/oss-security/2015/06/04/2	Exploit
11	http://www.openwall.com/lists/oss-security/2015/07/13/7	Exploit
12	http://www.openwall.com/lists/oss-security/2015/07/13/7	Exploit
13	http://www.openwall.com/lists/oss-security/2015/07/15/3
14	http://www.openwall.com/lists/oss-security/2015/07/15/3
15	http://www.securityfocus.com/bid/75037
16	http://www.securityfocus.com/bid/75037
17	http://www.securitytracker.com/id/1033703
18	http://www.securitytracker.com/id/1033703
19	http://www.ubuntu.com/usn/USN-2695-1	Third Party Advisory
20	http://www.ubuntu.com/usn/USN-2695-1	Third Party Advisory
21	https://github.com/htacg/tidy-html5/issues/217#issuecomment-108565501	Exploit
22	https://github.com/htacg/tidy-html5/issues/217#issuecomment-108565501	Exploit
23	https://support.apple.com/HT205212	Third Party Advisory
24	https://support.apple.com/HT205212	Third Party Advisory
25	https://support.apple.com/HT205213	Third Party Advisory
26	https://support.apple.com/HT205213	Third Party Advisory
27	https://support.apple.com/HT205267	Third Party Advisory
28	https://support.apple.com/HT205267	Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-119	バッファエラー	https://cwe.mitre.org/data/definitions/118.html

JVN Vulnerability Information

tidy の lexer.c の ParseValue 関数におけるサービス運用妨害 (DoS) の脆弱性

Title	tidy の lexer.c の ParseValue 関数におけるサービス運用妨害 (DoS) の脆弱性
Summary	tidy の lexer.c の ParseValue 関数には、サービス運用妨害 (クラッシュ) 状態にされる脆弱性が存在します。
Possible impacts	第三者により、大量のメモリ割り当てを誘発する空の href の前の複数の空白文字に関する問題によって、サービス運用妨害 (クラッシュ) 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	June 4, 2015, midnight
Registration Date	Aug. 12, 2015, 12:31 p.m.
Last Update	Oct. 6, 2015, 10:26 a.m.

Affected System

アップル

Apple Mac OS X 10.6.8 以上 10.11 未満

iOS 9 未満 (iPad 2 以降)

iOS 9 未満 (iPhone 4s 以降)

iOS 9 未満 (iPod touch 第 5 世代以降)

watchOS 2 未満 (Apple Watch Edition)

watchOS 2 未満 (Apple Watch Sport)

watchOS 2 未満 (Apple Watch)

HTACG

Tidy 4.9.31 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-2015-5523	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5523
National Vulnerability Database (NVD)
2	CVE-2015-5523	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-5523

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
Apple Mailing Lists
1	APPLE-SA-2015-09-16-1 iOS 9	http://lists.apple.com/archives/security-announce/2015/Sep/msg00001.html
2	APPLE-SA-2015-09-21-1 watchOS 2	http://lists.apple.com/archives/security-announce/2015/Sep/msg00005.html
3	APPLE-SA-2015-09-30-3 OS X El Capitan 10.11	http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html
Apple Security Updates
4	HT205212	https://support.apple.com/en-us/HT205212
5	HT205213	https://support.apple.com/en-us/HT205213
6	HT205267	https://support.apple.com/en-us/HT205267
Apple セキュリティアップデート
7	HT205212	https://support.apple.com/ja-jp/HT205212
8	HT205213	https://support.apple.com/ja-jp/HT205213
9	HT205267	https://support.apple.com/ja-jp/HT205267
GitHub
10	tidy heap-buffer-overflow #217	https://github.com/htacg/tidy-html5/issues/217
HTACG
11	HTML Tidy	http://www.html-tidy.org/

その他

No	Name	URL
JVN
1	JVNVU#97220341	http://jvn.jp/vu/JVNVU97220341/index.html
2	JVNVU#99970459	http://jvn.jp/vu/JVNVU99970459/index.html

Change Log

No	Changed Details	Date of change
0	[2015年08月12日] 掲載 [2015年10月06日] 影響を受けるシステム：ベンダ情報の追加に伴い内容を更新ベンダ情報：アップル (HT205212) を追加ベンダ情報：アップル (HT205213) を追加ベンダ情報：アップル (HT205267) を追加ベンダ情報：アップル (APPLE-SA-2015-09-16-1 iOS 9) を追加ベンダ情報：アップル (APPLE-SA-2015-09-21-1 watchOS 2) を追加ベンダ情報：アップル (APPLE-SA-2015-09-30-3 OS X El Capitan 10.11) を追加参考情報：JVN (JVNVU#99970459) を追加参考情報：JVN (JVNVU#97220341) を追加	Feb. 17, 2018, 10:37 a.m.