NVD Vulnerability Detail

CVE-2014-6052

Summary	The HandleRFBServerMessage function in libvncclient/rfbproto.c in LibVNCServer 0.9.9 and earlier does not check certain malloc return values, which allows remote VNC servers to cause a denial of service (application crash) or possibly execute arbitrary code by specifying a large screen size in a (1) FramebufferUpdate, (2) ResizeFrameBuffer, or (3) PalmVNCReSizeFrameBuffer message.
Publication Date	Dec. 16, 2014, 3:59 a.m.
Registration Date	Jan. 26, 2021, 3:15 p.m.
Last Update	Nov. 21, 2024, 11:13 a.m.

CVSS2.0 : HIGH
Score	7.5
Vector	AV:N/AC:L/Au:N/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)	低
攻撃前の認証要否(Au)	不要
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:libvncserver:libvncserver::::::::			0.9.9

Configuration2		or higher	or less	more than	less than
cpe:2.3:o:oracle:solaris:11.3:::::::*

Configuration3		or higher	or less	more than	less than
cpe:2.3:o:debian:debian_linux:7.0:::::::*

Configuration4	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:::

Related information, measures and tools

No	URL	タグ
1	http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
2	http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
3	http://seclists.org/oss-sec/2014/q3/639	Mailing List Third Party Advisory
4	http://seclists.org/oss-sec/2014/q3/639	Mailing List Third Party Advisory
5	http://secunia.com/advisories/61506	Permissions Required Third Party Advisory
6	http://secunia.com/advisories/61506	Permissions Required Third Party Advisory
7	http://secunia.com/advisories/61682	Permissions Required Third Party Advisory
8	http://secunia.com/advisories/61682	Permissions Required Third Party Advisory
9	http://ubuntu.com/usn/usn-2365-1	Third Party Advisory
10	http://ubuntu.com/usn/usn-2365-1	Third Party Advisory
11	http://www.debian.org/security/2014/dsa-3081	Third Party Advisory
12	http://www.debian.org/security/2014/dsa-3081	Third Party Advisory
13	http://www.ocert.org/advisories/ocert-2014-007.html	Third Party Advisory US Government Resource
14	http://www.ocert.org/advisories/ocert-2014-007.html	Third Party Advisory US Government Resource
15	http://www.openwall.com/lists/oss-security/2014/09/25/11	Mailing List Third Party Advisory
16	http://www.openwall.com/lists/oss-security/2014/09/25/11	Mailing List Third Party Advisory
17	http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html	Third Party Advisory
18	http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html	Third Party Advisory
19	http://www.securityfocus.com/bid/70091
20	http://www.securityfocus.com/bid/70091
21	https://github.com/newsoft/libvncserver/commit/85a778c0e45e87e35ee7199f1f25020648e8b812	Exploit Issue Tracking Patch
22	https://github.com/newsoft/libvncserver/commit/85a778c0e45e87e35ee7199f1f25020648e8b812	Exploit Issue Tracking Patch
23	https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
24	https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
25	https://security.gentoo.org/glsa/201507-07
26	https://security.gentoo.org/glsa/201507-07
27	https://usn.ubuntu.com/4587-1/
28	https://usn.ubuntu.com/4587-1/

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-20	不適切な入力確認	https://cwe.mitre.org/data/definitions/20.html

JVN Vulnerability Information

LibVNCServer の libvncclient/rfbproto.c 内の HandleRFBServerMessage 関数におけるサービス運用妨害 (DoS) の脆弱性

Title	LibVNCServer の libvncclient/rfbproto.c 内の HandleRFBServerMessage 関数におけるサービス運用妨害 (DoS) の脆弱性
Summary	LibVNCServer の libvncclient/rfbproto.c 内の HandleRFBServerMessage 関数は、特定の malloc 戻り値をチェックしないため、サービス運用妨害 (アプリケーションクラッシュ) 状態にされる、または任意のコードを実行される脆弱性が存在します。
Possible impacts	リモートの VNC サーバにより、(1) FramebufferUpdate、(2) ResizeFrameBuffer、または (3) PalmVNCReSizeFrameBuffer メッセージの過度に大きなスクリーンサイズを指定されることで、サービス運用妨害 (アプリケーションクラッシュ) 状態にされる、または任意のコードを実行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	Aug. 15, 2014, midnight
Registration Date	Dec. 17, 2014, 2:49 p.m.
Last Update	Oct. 30, 2015, 4:35 p.m.

Affected System

LibVNC

LibVNCServer 0.9.9 およびそれ以前

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-2014-6052	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6052
National Vulnerability Database (NVD)
2	CVE-2014-6052	https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-6052

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-20	https://jvndb.jvn.jp/ja/cwe/CWE-20.html

ベンダー情報

No	Name	URL
GitHub
1	Check for MallocFrameBuffer() return value	https://github.com/newsoft/libvncserver/commit/85a778c0e45e87e35ee7199f1f25020648e8b812
Oracle Technology Network
2	Oracle Solaris Third Party Bulletin - October 2015	http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
Ubuntu Security Notice
3	USN-2365-1	http://www.ubuntu.com/usn/usn-2365-1/

Change Log

No	Changed Details	Date of change
0	[2014年12月17日] 掲載 [2015年10月30日] ベンダ情報：オラクル (Oracle Solaris Third Party Bulletin - October 2015) を追加	Feb. 17, 2018, 10:37 a.m.