NVD Vulnerability Detail

CVE-2011-0495

Summary	Stack-based buffer overflow in the ast_uri_encode function in main/utils.c in Asterisk Open Source before 1.4.38.1, 1.4.39.1, 1.6.1.21, 1.6.2.15.1, 1.6.2.16.1, 1.8.1.2, 1.8.2.; and Business Edition before C.3.6.2; when running in pedantic mode allows remote authenticated users to execute arbitrary code via crafted caller ID data in vectors involving the (1) SIP channel driver, (2) URIENCODE dialplan function, or (3) AGI dialplan function.
Publication Date	Jan. 21, 2011, 4 a.m.
Registration Date	Jan. 28, 2021, 4:37 p.m.
Last Update	Nov. 21, 2024, 10:24 a.m.

CVSS2.0 : MEDIUM
Score	6.0
Vector	AV:N/AC:M/Au:S/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)	単一
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:a:digium:asterisknow:1.5:::::::*
cpe:2.3:a:digium:asterisk::::::::	1.2.0	1.2.40
cpe:2.3:a:digium:asterisk:::::business:::*				c.3.6.2
cpe:2.3:a:digium:asterisk::::::::	1.6.2.16			1.6.2.16.1
cpe:2.3:a:digium:asterisk::::::::	1.4.39			1.4.39.1
cpe:2.3:a:digium:asterisk::::::::	1.6.1			1.6.1.21
cpe:2.3:a:digium:asterisk::::::::	1.4.0			1.4.38.1
cpe:2.3:a:digium:asterisk::::::::	1.6.2			1.6.2.15.1
cpe:2.3:a:digium:asterisk::::::::	1.8.2			1.8.2.2
cpe:2.3:a:digium:asterisk::::::::	1.8.0			1.8.1.2

Configuration2	or higher	or less	more than	less than
cpe:2.3:o:fedoraproject:fedora:13:::::::*
cpe:2.3:o:fedoraproject:fedora:14:::::::*

Configuration3		or higher	or less	more than	less than
cpe:2.3:o:debian:debian_linux:6.0:::::::*

Configuration4		or higher	or less	more than	less than
cpe:2.3:o:digium:s800i_firmware:1.2.0:::::::*
execution environment
1	cpe:2.3:h:digium:s800i:-:::::::*

Related information, measures and tools

No	URL	タグ
1	http://downloads.asterisk.org/pub/security/AST-2011-001.html	Vendor Advisory
2	http://downloads.asterisk.org/pub/security/AST-2011-001-1.6.2.diff	Patch Vendor Advisory
3	http://lists.fedoraproject.org/pipermail/package-announce/2011-February/053689.html	Third Party Advisory
4	http://lists.fedoraproject.org/pipermail/package-announce/2011-February/053713.html	Third Party Advisory
5	http://osvdb.org/70518	Broken Link
6	http://secunia.com/advisories/42935	Third Party Advisory
7	http://secunia.com/advisories/43119	Third Party Advisory
8	http://secunia.com/advisories/43373	Third Party Advisory
9	http://www.debian.org/security/2011/dsa-2171	Third Party Advisory
10	http://www.securityfocus.com/archive/1/515781/100/0/threaded	Third Party Advisory VDB Entry
11	http://www.securityfocus.com/bid/45839	Third Party Advisory VDB Entry
12	http://www.vupen.com/english/advisories/2011/0159	Permissions Required
13	http://www.vupen.com/english/advisories/2011/0281	Permissions Required
14	http://www.vupen.com/english/advisories/2011/0449	Permissions Required
15	https://exchange.xforce.ibmcloud.com/vulnerabilities/64831	Third Party Advisory VDB Entry
16	http://downloads.asterisk.org/pub/security/AST-2011-001.html	Vendor Advisory
17	https://exchange.xforce.ibmcloud.com/vulnerabilities/64831	Third Party Advisory VDB Entry
18	http://www.vupen.com/english/advisories/2011/0449	Permissions Required
19	http://www.vupen.com/english/advisories/2011/0281	Permissions Required
20	http://www.vupen.com/english/advisories/2011/0159	Permissions Required
21	http://www.securityfocus.com/bid/45839	Third Party Advisory VDB Entry
22	http://www.securityfocus.com/archive/1/515781/100/0/threaded	Third Party Advisory VDB Entry
23	http://www.debian.org/security/2011/dsa-2171	Third Party Advisory
24	http://secunia.com/advisories/43373	Third Party Advisory
25	http://secunia.com/advisories/43119	Third Party Advisory
26	http://secunia.com/advisories/42935	Third Party Advisory
27	http://osvdb.org/70518	Broken Link
28	http://lists.fedoraproject.org/pipermail/package-announce/2011-February/053713.html	Third Party Advisory
29	http://lists.fedoraproject.org/pipermail/package-announce/2011-February/053689.html	Third Party Advisory
30	http://downloads.asterisk.org/pub/security/AST-2011-001-1.6.2.diff	Patch Vendor 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

Asterisk Open Source の ast_uri_encode 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	Asterisk Open Source の ast_uri_encode 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	Asterisk Open Source の main/utils.c の ast_uri_encode 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	リモート認証されたユーザにより、巧妙に細工された以下を含む caller ID データを介して、任意のコマンドを実行される可能性があります。 (1) SIP チャネルドライバ (2) URIENCODE diaplan 関数 (3) AGI diaplan 関数
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	Jan. 18, 2011, midnight
Registration Date	March 27, 2012, 6:42 p.m.
Last Update	July 10, 2012, 2:35 p.m.

Affected System

Digium

Asterisk Asterisk 1.4.38.1 未満、1.4.39.1、1.6.1.21、1.6.2.15.1、1.6.2.16.1、1.8.1.2、1.8.2、および Business Edition C.3.6.2 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-2011-0495	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0495
National Vulnerability Database (NVD)
2	CVE-2011-0495	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2011-0495

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
Asterisk Project Security Advisory
1	AST-2011-001	http://downloads.asterisk.org/pub/security/AST-2011-001.html

Change Log

No	Changed Details	Date of change
0	[2012年03月27日] 掲載	Feb. 17, 2018, 10:37 a.m.