NVD Vulnerability Detail

CVE-2014-6054

Summary	The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier allows remote attackers to cause a denial of service (divide-by-zero error and server crash) via a zero value in the scaling factor in a (1) PalmVNCSetScaleFactor or (2) SetScale message.
Publication Date	Oct. 6, 2014, 11:55 p.m.
Registration Date	Jan. 26, 2021, 3:15 p.m.
Last Update	Nov. 21, 2024, 11:13 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	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:debian:debian_linux:7.0:::::::*

Configuration3	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
6	http://secunia.com/advisories/61506
7	http://secunia.com/advisories/61682
8	http://secunia.com/advisories/61682
9	http://www.debian.org/security/2014/dsa-3081	Third Party Advisory
10	http://www.debian.org/security/2014/dsa-3081	Third Party Advisory
11	http://www.ocert.org/advisories/ocert-2014-007.html	Third Party Advisory US Government Resource
12	http://www.ocert.org/advisories/ocert-2014-007.html	Third Party Advisory US Government Resource
13	http://www.openwall.com/lists/oss-security/2014/09/25/11	Mailing List Third Party Advisory
14	http://www.openwall.com/lists/oss-security/2014/09/25/11	Mailing List Third Party Advisory
15	http://www.securityfocus.com/bid/70094
16	http://www.securityfocus.com/bid/70094
17	http://www.ubuntu.com/usn/USN-2365-1	Third Party Advisory
18	http://www.ubuntu.com/usn/USN-2365-1	Third Party Advisory
19	https://github.com/newsoft/libvncserver/commit/05a9bd41a8ec0a9d580a8f420f41718bdd235446	Issue Tracking Patch
20	https://github.com/newsoft/libvncserver/commit/05a9bd41a8ec0a9d580a8f420f41718bdd235446	Issue Tracking Patch
21	https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
22	https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
23	https://security.gentoo.org/glsa/201507-07
24	https://security.gentoo.org/glsa/201507-07
25	https://usn.ubuntu.com/4587-1/
26	https://usn.ubuntu.com/4587-1/

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-189	数値処理の問題	https://cwe.mitre.org/data/definitions/189.html

JVN Vulnerability Information

LibVNCServer の libvncserver/rfbserver.c の rfbProcessClientNormalMessage 関数におけるサービス運用妨害 (DoS) の脆弱性

Title	LibVNCServer の libvncserver/rfbserver.c の rfbProcessClientNormalMessage 関数におけるサービス運用妨害 (DoS) の脆弱性
Summary	LibVNCServer の libvncserver/rfbserver.c の rfbProcessClientNormalMessage 関数には、サービス運用妨害 (ゼロ除算エラーおよびサーバクラッシュ) 状態にされる脆弱性が存在します。
Possible impacts	第三者により、(1) PalmVNCSetScaleFactor または (2) SetScale メッセージの倍率のゼロの値を介して、サービス運用妨害 (ゼロ除算エラーおよびサーバクラッシュ) 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	Aug. 18, 2014, midnight
Registration Date	Oct. 8, 2014, 2:28 p.m.
Last Update	Oct. 8, 2014, 2:28 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-2014-6054	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6054
National Vulnerability Database (NVD)
2	CVE-2014-6054	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-6054

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-189	https://jvndb.jvn.jp/ja/cwe/CWE-189.html

ベンダー情報

No	Name	URL
GitHub
1	Do not accept a scaling factor of zero on PalmVNCSetScaleFactor and SetScale client->server messages.	https://github.com/newsoft/libvncserver/commit/05a9bd41a8ec0a9d580a8f420f41718bdd235446
LibVNC
2	Top Page	http://libvnc.github.io/

Change Log

No	Changed Details	Date of change
0	[2014年10月08日] 掲載	Feb. 17, 2018, 10:37 a.m.