NVD Vulnerability Detail

CVE-2015-6806

Summary	The MScrollV function in ansi.c in GNU screen 4.3.1 and earlier does not properly limit recursion, which allows remote attackers to cause a denial of service (stack consumption) via an escape sequence with a large repeat count value.
Publication Date	Sept. 29, 2015, 5:59 a.m.
Registration Date	Jan. 26, 2021, 2:55 p.m.
Last Update	Nov. 21, 2024, 11:35 a.m.

Affected software configurations

Configuration1		or higher	or less	more than	less than
cpe:2.3:a:gnu:gnu_screen::::::::			4.3.1

Related information, measures and tools

No	URL	タグ
1	http://git.savannah.gnu.org/cgit/screen.git/commit/?id=b7484c224738247b510ed0d268cd577076958f1b
2	http://git.savannah.gnu.org/cgit/screen.git/commit/?id=b7484c224738247b510ed0d268cd577076958f1b
3	http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00001.html
4	http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00001.html
5	http://www.debian.org/security/2015/dsa-3352
6	http://www.debian.org/security/2015/dsa-3352
7	http://www.openwall.com/lists/oss-security/2015/09/01/1
8	http://www.openwall.com/lists/oss-security/2015/09/01/1
9	http://www.openwall.com/lists/oss-security/2015/09/03/11	Exploit
10	http://www.openwall.com/lists/oss-security/2015/09/03/11	Exploit
11	http://www.openwall.com/lists/oss-security/2015/09/03/4
12	http://www.openwall.com/lists/oss-security/2015/09/03/4
13	https://savannah.gnu.org/bugs/?45713	Exploit Vendor Advisory
14	https://savannah.gnu.org/bugs/?45713	Exploit Vendor Advisory
15	https://usn.ubuntu.com/3996-1/
16	https://usn.ubuntu.com/3996-1/

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

GNU screen の ansi.c の MScrollV 関数におけるサービス運用妨害 (DoS) の脆弱性

Title	GNU screen の ansi.c の MScrollV 関数におけるサービス運用妨害 (DoS) の脆弱性
Summary	GNU screen の ansi.c の MScrollV 関数は、再帰を適切に制限しないため、サービス運用妨害 (スタックの消費) 状態にされる脆弱性が存在します。
Possible impacts	第三者により、過度に大きな反復カウント値を伴うエスケープシーケンスを介して、サービス運用妨害 (スタックの消費) 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. 31, 2015, midnight
Registration Date	Oct. 1, 2015, 2:57 p.m.
Last Update	Oct. 1, 2015, 2:57 p.m.

Affected System

GNU Project

GNU Screen 4.3.1 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-2015-6806	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6806
National Vulnerability Database (NVD)
2	CVE-2015-6806	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-6806

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
GNU Savannah
1	bug #45713: [PATCH] stack overflow due to too deep recursion	https://savannah.gnu.org/bugs/?45713
Savannah Git Hosting
2	Fix stack overflow due to too deep recursion	http://git.savannah.gnu.org/cgit/screen.git/commit/?id=b7484c224738247b510ed0d268cd577076958f1b

Change Log

No	Changed Details	Date of change
0	[2015年10月01日] 掲載	Feb. 17, 2018, 10:37 a.m.