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JVN脆弱性詳細

Samba の smbfs における /etc/mtab ファイルを改ざんされる脆弱性

Title	Samba の smbfs における /etc/mtab ファイルを改ざんされる脆弱性
Summary	Samba の smbfs は、(1) /etc/mtab ファイルへの mount.cifs の追加、および (2) /etc/mtab.tmp ファイルへの umount.cifs の追加の際に、リソースリミットの干渉について、最初のチェックを行わないため、/etc/mtab ファイルを改ざんされる脆弱性が存在します。
Possible impacts	ローカルユーザにより、過度に小さな RLIMIT_FSIZE 値を介して、/etc/mtab ファイルを改ざんされる可能性があります。
Solution	ベンダ情報及び参考情報を参照して適切な対策を実施してください。
Publication Date	April 10, 2011, midnight
Registration Date	Sept. 16, 2011, 11:50 a.m.
Last Update	Dec. 26, 2012, 10:24 a.m.

CVSS2.0 : 注意
Score	3.3
Vector	AV:L/AC:M/Au:N/C:P/I:P/A:N

Affected System

レッドハット

Red Hat Enterprise Linux 4 (as)

Red Hat Enterprise Linux 4 (es)

Red Hat Enterprise Linux 4 (ws)

Red Hat Enterprise Linux 5 (server)

Red Hat Enterprise Linux Desktop 4.0

Red Hat Enterprise Linux Desktop 5.0 (client)

Red Hat Enterprise Linux Desktop 6

Red Hat Enterprise Linux HPC Node 6

Red Hat Enterprise Linux Server 6

Red Hat Enterprise Linux Server EUS 6.1.z

Red Hat Enterprise Linux Workstation 6

RHEL Desktop Workstation 5 (client)

Samba Project

Samba 3.5.8 およびそれ以前

VMware

VMware ESX 3.5

VMware ESX 4.0

VMware ESX 4.1

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-2011-1678	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1678
National Vulnerability Database (NVD)
2	CVE-2011-1678	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2011-1678

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-16	https://jvndb.jvn.jp/ja/cwe/CWE-16.html

ベンダー情報

No	Name	URL
Red Hat Security Advisory
1	RHSA-2011-1220	https://rhn.redhat.com/errata/RHSA-2011-1220.html
2	RHSA-2011:1219	https://rhn.redhat.com/errata/RHSA-2011-1219.html
3	RHSA-2011:1221	https://rhn.redhat.com/errata/RHSA-2011-1221.html
Samba
4	Release History	http://samba.org/samba/history/
VMware Security Advisories
5	VMSA-2012-0001	http://www.vmware.com/jp/support/support-resources/advisories/VMSA-2012-0001.html

その他

No	Name	URL
ISS X-Force Database
1	66702	http://xforce.iss.net/xforce/xfdb/66702
OPEN SOURCE VULNERABILITY DATABASE (OSVDB)
2	74872	http://osvdb.org/74872
Secunia Advisory
3	SA45760	http://secunia.com/advisories/45760
4	SA45798	http://secunia.com/advisories/45798
5	SA45806	http://secunia.com/advisories/45806

Change Log

No	Changed Details	Date of change
0	[2011年09月16日] 掲載 [2012年12月26日] 影響を受けるシステム：VMware (VMSA-2012-0001) の情報を追加ベンダ情報：VMware (VMSA-2012-0001) を追加	Feb. 17, 2018, 10:37 a.m.

NVD Vulnerability Information

CVE-2011-1678

Summary	smbfs in Samba 3.5.8 and earlier attempts to use (1) mount.cifs to append to the /etc/mtab file and (2) umount.cifs to append to the /etc/mtab.tmp file without first checking whether resource limits would interfere, which allows local users to trigger corruption of the /etc/mtab file via a process with a small RLIMIT_FSIZE value, a related issue to CVE-2011-1089.
Publication Date	April 10, 2011, 11:55 a.m.
Registration Date	Jan. 28, 2021, 4:38 p.m.
Last Update	Nov. 21, 2024, 10:26 a.m.

Affected software configurations

Configuration1		or higher	or less	more than	less than
cpe:2.3:a:samba:samba::::::::			3.5.8

Related information, measures and tools

No	URL	タグ
1	http://openwall.com/lists/oss-security/2011/03/04/10	Mailing List Third Party Advisory
2	http://openwall.com/lists/oss-security/2011/03/04/11	Mailing List Third Party Advisory
3	http://openwall.com/lists/oss-security/2011/03/04/12	Mailing List Third Party Advisory
4	http://openwall.com/lists/oss-security/2011/03/04/9	Mailing List Third Party Advisory
5	http://openwall.com/lists/oss-security/2011/03/05/3	Mailing List Third Party Advisory
6	http://openwall.com/lists/oss-security/2011/03/05/7	Mailing List Third Party Advisory
7	http://openwall.com/lists/oss-security/2011/03/07/9	Mailing List Third Party Advisory
8	http://openwall.com/lists/oss-security/2011/03/14/16	Mailing List Third Party Advisory
9	http://openwall.com/lists/oss-security/2011/03/14/5	Mailing List Third Party Advisory
10	http://openwall.com/lists/oss-security/2011/03/14/7	Mailing List Third Party Advisory
11	http://openwall.com/lists/oss-security/2011/03/15/6	Mailing List Third Party Advisory
12	http://openwall.com/lists/oss-security/2011/03/22/4	Mailing List Third Party Advisory
13	http://openwall.com/lists/oss-security/2011/03/22/6	Mailing List Third Party Advisory
14	http://openwall.com/lists/oss-security/2011/03/31/3	Mailing List Third Party Advisory
15	http://openwall.com/lists/oss-security/2011/03/31/4	Mailing List Third Party Advisory
16	http://openwall.com/lists/oss-security/2011/04/01/2	Mailing List Third Party Advisory
17	http://www.mandriva.com/security/advisories?name=MDVSA-2011:148	Broken Link
18	https://bugzilla.redhat.com/show_bug.cgi?id=688980	Issue Tracking
19	https://exchange.xforce.ibmcloud.com/vulnerabilities/66702
20	http://openwall.com/lists/oss-security/2011/03/04/10	Mailing List Third Party Advisory
21	https://exchange.xforce.ibmcloud.com/vulnerabilities/66702
22	https://bugzilla.redhat.com/show_bug.cgi?id=688980	Issue Tracking
23	http://www.mandriva.com/security/advisories?name=MDVSA-2011:148	Broken Link
24	http://openwall.com/lists/oss-security/2011/04/01/2	Mailing List Third Party Advisory
25	http://openwall.com/lists/oss-security/2011/03/31/4	Mailing List Third Party Advisory
26	http://openwall.com/lists/oss-security/2011/03/31/3	Mailing List Third Party Advisory
27	http://openwall.com/lists/oss-security/2011/03/22/6	Mailing List Third Party Advisory
28	http://openwall.com/lists/oss-security/2011/03/22/4	Mailing List Third Party Advisory
29	http://openwall.com/lists/oss-security/2011/03/15/6	Mailing List Third Party Advisory
30	http://openwall.com/lists/oss-security/2011/03/14/7	Mailing List Third Party Advisory
31	http://openwall.com/lists/oss-security/2011/03/14/5	Mailing List Third Party Advisory
32	http://openwall.com/lists/oss-security/2011/03/14/16	Mailing List Third Party Advisory
33	http://openwall.com/lists/oss-security/2011/03/07/9	Mailing List Third Party Advisory
34	http://openwall.com/lists/oss-security/2011/03/05/7	Mailing List Third Party Advisory
35	http://openwall.com/lists/oss-security/2011/03/05/3	Mailing List Third Party Advisory
36	http://openwall.com/lists/oss-security/2011/03/04/9	Mailing List Third Party Advisory
37	http://openwall.com/lists/oss-security/2011/03/04/12	Mailing List Third Party Advisory
38	http://openwall.com/lists/oss-security/2011/03/04/11	Mailing List Third Party Advisory

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