製品・ソフトウェアに関する情報

JVN脆弱性詳細

PuTTY の ssh2_load_userkey および ssh2_save_userkey 関数における重要な情報を取得される脆弱性

Title	PuTTY の ssh2_load_userkey および ssh2_save_userkey 関数における重要な情報を取得される脆弱性
Summary	PuTTY の (1) ssh2_load_userkey および (2) ssh2_save_userkey 関数は、SSH-2 秘密鍵をメモリから適切にワイプしないため、重要な情報を取得される脆弱性が存在します。
Possible impacts	ローカルユーザにより、メモリを読まれることで、重要な情報を取得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	Feb. 28, 2015, midnight
Registration Date	March 31, 2015, 11:36 a.m.
Last Update	March 31, 2015, 11:36 a.m.

Affected System

Debian

Debian GNU/Linux 7.0

Novell

openSUSE 13.1

openSUSE 13.2

Fedora Project

Fedora 20

Fedora 22

Simon Tatham

PuTTY 0.51 から 0.63

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-2015-2157	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2157
National Vulnerability Database (NVD)
2	CVE-2015-2157	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2157

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-200	https://jvndb.jvn.jp/ja/cwe/CWE-200.html

ベンダー情報

No	Name	URL
Debian Security Advisory
1	DSA-3190	https://www.debian.org/security/2015/dsa-3190
opensuse-updates
2	openSUSE-SU-2015:0474	http://lists.opensuse.org/opensuse-updates/2015-03/msg00032.html
SECURITY
3	Fedora 20 Update: putty-0.64-1.fc20	https://lists.fedoraproject.org/pipermail/package-announce/2015-March/151839.html
4	Fedora 22 Update: putty-0.64-1.fc22	https://lists.fedoraproject.org/pipermail/package-announce/2015-March/151790.html
Simon Tatham
5	PuTTY Change Log	http://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html
6	PuTTY vulnerability private-key-not-wiped-2	http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/private-key-not-wiped-2.html

Change Log

No	Changed Details	Date of change
0	[2015年03月31日] 掲載	Feb. 17, 2018, 10:37 a.m.

NVD Vulnerability Information

CVE-2015-2157

Summary	The (1) ssh2_load_userkey and (2) ssh2_save_userkey functions in PuTTY 0.51 through 0.63 do not properly wipe SSH-2 private keys from memory, which allows local users to obtain sensitive information by reading the memory.
Publication Date	March 27, 2015, 11:59 p.m.
Registration Date	Jan. 26, 2021, 2:47 p.m.
Last Update	Nov. 21, 2024, 11:26 a.m.

Affected software configurations

Related information, measures and tools

No	URL	タグ
1	http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151790.html
2	http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151790.html
3	http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151839.html
4	http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151839.html
5	http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151933.html
6	http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151933.html
7	http://lists.opensuse.org/opensuse-updates/2015-03/msg00032.html
8	http://lists.opensuse.org/opensuse-updates/2015-03/msg00032.html
9	http://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html	Patch Vendor Advisory
10	http://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html	Patch Vendor Advisory
11	http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/private-key-not-wiped-2.html	Patch Vendor Advisory
12	http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/private-key-not-wiped-2.html	Patch Vendor Advisory
13	http://www.debian.org/security/2015/dsa-3190
14	http://www.debian.org/security/2015/dsa-3190
15	http://www.openwall.com/lists/oss-security/2015/02/28/4
16	http://www.openwall.com/lists/oss-security/2015/02/28/4
17	http://www.openwall.com/lists/oss-security/2015/02/28/5
18	http://www.openwall.com/lists/oss-security/2015/02/28/5
19	http://www.securityfocus.com/bid/72825
20	http://www.securityfocus.com/bid/72825

Common Vulnerabilities List