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Vulnerability Details : CVE-2009-2847 (1 public exploit)

The do_sigaltstack function in kernel/signal.c in Linux kernel 2.4 through 2.4.37 and 2.6 before 2.6.31-rc5, when running on 64-bit systems, does not clear certain padding bytes from a structure, which allows local users to obtain sensitive information from the kernel stack via the sigaltstack function.
Publish Date : 2009-08-18 Last Update Date : 2018-10-10
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- CVSS Scores & Vulnerability Types

CVSS Score
4.9
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Obtain Information
CWE ID CWE id is not defined for this vulnerability

- Vendor Statements

This issue has been rated as having moderate security impact. It was addressed in Red Hat Enterprise Linux 4, 5 and Red Hat Enterprise MRG: http://rhn.redhat.com/cve/CVE-2009-2847.html This issue is not planned to be fixed in Red Hat Enterprise Linux 3, due to this product being in Production 3 of its maintenance life-cycle, where only qualified security errata of important or critical impact are addressed. For further information about Errata Support Policy, visit: http://www.redhat.com/security/updates/errata/
Source: Redhat

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat moderate
2.1
AV:L/AC:L/Au:N/C:P/I:N/A:N 2009-08-04 2009-07-31
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- Related OVAL Definitions

Title Definition Id Class Family
DSA-1872 linux-2.6 -- denial of service/privilege escalation/information leak oval:org.mitre.oval:def:8168 unix
DSA-1872-1 linux-2.6 -- denial of service/privilege escalation/information leak oval:org.mitre.oval:def:13505 unix
DSA-1928 linux-2.6.24 -- privilege escalation/denial of service/sensitive memory leak oval:org.mitre.oval:def:7937 unix
DSA-1928-1 linux-2.6.24 -- privilege escalation/denial of service/sensitive memory leak oval:org.mitre.oval:def:13351 unix
ELSA-2009:1243: Oracle Linux 5.x.4 kernel security and bug fix update (Important) oval:org.mitre.oval:def:21973 unix
RHSA-2009:1243 -- Red Hat Enterprise Linux 5.4 kernel security and bug fix update (Important) oval:org.mitre.oval:def:29153 unix
RHSA-2009:1243: Red Hat Enterprise Linux 5.4 kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20091243 unix
RHSA-2009:1438: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20091438 unix
The do_sigaltstack function in kernel/signal.c in Linux kernel 2.4 through 2.4.37 and 2.6 before 2.6.31-rc5, when runnin... oval:org.mitre.oval:def:10637 unix
VMware kernel do_sigaltstack function vulnerability oval:org.mitre.oval:def:8405 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2009-2847

# Product Type Vendor Product Version Update Edition Language
1 Application Linux Kernel 2.6.24.7 Version Details Vulnerabilities
2 Application Linux Kernel 2.6.25.15 Version Details Vulnerabilities
3 OS Linux Linux Kernel 2.6 Version Details Vulnerabilities
4 OS Linux Linux Kernel 2.6.0 Version Details Vulnerabilities
5 OS Linux Linux Kernel 2.6.1 Version Details Vulnerabilities
6 OS Linux Linux Kernel 2.6.10 Version Details Vulnerabilities
7 OS Linux Linux Kernel 2.6.11 Version Details Vulnerabilities
8 OS Linux Linux Kernel 2.6.11.1 Version Details Vulnerabilities
9 OS Linux Linux Kernel 2.6.11.2 Version Details Vulnerabilities
10 OS Linux Linux Kernel 2.6.11.3 Version Details Vulnerabilities
11 OS Linux Linux Kernel 2.6.11.4 Version Details Vulnerabilities
12 OS Linux Linux Kernel 2.6.11.5 Version Details Vulnerabilities
13 OS Linux Linux Kernel 2.6.11.6 Version Details Vulnerabilities
14 OS Linux Linux Kernel 2.6.11.7 Version Details Vulnerabilities
15 OS Linux Linux Kernel 2.6.11.8 Version Details Vulnerabilities
16 OS Linux Linux Kernel 2.6.11.9 Version Details Vulnerabilities
17 OS Linux Linux Kernel 2.6.11.10 Version Details Vulnerabilities
18 OS Linux Linux Kernel 2.6.11.11 Version Details Vulnerabilities
19 OS Linux Linux Kernel 2.6.11.12 Version Details Vulnerabilities
20 OS Linux Linux Kernel 2.6.12 Version Details Vulnerabilities
21 OS Linux Linux Kernel 2.6.12.1 Version Details Vulnerabilities
22 OS Linux Linux Kernel 2.6.12.2 Version Details Vulnerabilities
23 OS Linux Linux Kernel 2.6.12.3 Version Details Vulnerabilities
24 OS Linux Linux Kernel 2.6.12.4 Version Details Vulnerabilities
25 OS Linux Linux Kernel 2.6.12.5 Version Details Vulnerabilities
26 OS Linux Linux Kernel 2.6.12.6 Version Details Vulnerabilities
27 OS Linux Linux Kernel 2.6.13 Version Details Vulnerabilities
28 OS Linux Linux Kernel 2.6.13.1 Version Details Vulnerabilities
29 OS Linux Linux Kernel 2.6.13.2 Version Details Vulnerabilities
30 OS Linux Linux Kernel 2.6.13.3 Version Details Vulnerabilities
31 OS Linux Linux Kernel 2.6.13.4 Version Details Vulnerabilities
32 OS Linux Linux Kernel 2.6.13.5 Version Details Vulnerabilities
33 OS Linux Linux Kernel 2.6.14 Version Details Vulnerabilities
34 OS Linux Linux Kernel 2.6.14.1 Version Details Vulnerabilities
35 OS Linux Linux Kernel 2.6.14.2 Version Details Vulnerabilities
36 OS Linux Linux Kernel 2.6.14.3 Version Details Vulnerabilities
37 OS Linux Linux Kernel 2.6.14.4 Version Details Vulnerabilities
38 OS Linux Linux Kernel 2.6.14.5 Version Details Vulnerabilities
39 OS Linux Linux Kernel 2.6.14.6 Version Details Vulnerabilities
40 OS Linux Linux Kernel 2.6.14.7 Version Details Vulnerabilities
41 OS Linux Linux Kernel 2.6.15 Version Details Vulnerabilities
42 OS Linux Linux Kernel 2.6.15.1 Version Details Vulnerabilities
43 OS Linux Linux Kernel 2.6.15.2 Version Details Vulnerabilities
44 OS Linux Linux Kernel 2.6.15.3 Version Details Vulnerabilities
45 OS Linux Linux Kernel 2.6.15.4 Version Details Vulnerabilities
46 OS Linux Linux Kernel 2.6.15.5 Version Details Vulnerabilities
47 OS Linux Linux Kernel 2.6.15.6 Version Details Vulnerabilities
48 OS Linux Linux Kernel 2.6.15.7 Version Details Vulnerabilities
49 OS Linux Linux Kernel 2.6.16 Version Details Vulnerabilities
50 OS Linux Linux Kernel 2.6.16.1 Version Details Vulnerabilities
51 OS Linux Linux Kernel 2.6.16.2 Version Details Vulnerabilities
52 OS Linux Linux Kernel 2.6.16.3 Version Details Vulnerabilities
53 OS Linux Linux Kernel 2.6.16.10 Version Details Vulnerabilities
54 OS Linux Linux Kernel 2.6.16.11 Version Details Vulnerabilities
55 OS Linux Linux Kernel 2.6.16.12 Version Details Vulnerabilities
56 OS Linux Linux Kernel 2.6.16.13 Version Details Vulnerabilities
57 OS Linux Linux Kernel 2.6.16.14 Version Details Vulnerabilities
58 OS Linux Linux Kernel 2.6.16.15 Version Details Vulnerabilities
59 OS Linux Linux Kernel 2.6.16.16 Version Details Vulnerabilities
60 OS Linux Linux Kernel 2.6.16.17 Version Details Vulnerabilities
61 OS Linux Linux Kernel 2.6.16.18 Version Details Vulnerabilities
62 OS Linux Linux Kernel 2.6.16.19 Version Details Vulnerabilities
63 OS Linux Linux Kernel 2.6.16.20 Version Details Vulnerabilities
64 OS Linux Linux Kernel 2.6.16.21 Version Details Vulnerabilities
65 OS Linux Linux Kernel 2.6.16.22 Version Details Vulnerabilities
66 OS Linux Linux Kernel 2.6.16.23 Version Details Vulnerabilities
67 OS Linux Linux Kernel 2.6.16.24 Version Details Vulnerabilities
68 OS Linux Linux Kernel 2.6.16.25 Version Details Vulnerabilities
69 OS Linux Linux Kernel 2.6.16.26 Version Details Vulnerabilities
70 OS Linux Linux Kernel 2.6.16.27 Version Details Vulnerabilities
71 OS Linux Linux Kernel 2.6.16.28 Version Details Vulnerabilities
72 OS Linux Linux Kernel 2.6.16.29 Version Details Vulnerabilities
73 OS Linux Linux Kernel 2.6.16.30 Version Details Vulnerabilities
74 OS Linux Linux Kernel 2.6.16.31 -rc5 Version Details Vulnerabilities
75 OS Linux Linux Kernel 2.6.16.31 Version Details Vulnerabilities
76 OS Linux Linux Kernel 2.6.16.31 -rc1 Version Details Vulnerabilities
77 OS Linux Linux Kernel 2.6.16.31 -rc2 Version Details Vulnerabilities
78 OS Linux Linux Kernel 2.6.16.31 -rc3 Version Details Vulnerabilities
79 OS Linux Linux Kernel 2.6.16.31 -rc4 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Kernel 2
Linux Linux Kernel 77

- References For CVE-2009-2847

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=0083fc2c50e6c5127c2802ad323adf8143ab7856 CONFIRM
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01256.html
FEDORA FEDORA-2009-9044
http://www.vupen.com/english/advisories/2009/3316
VUPEN ADV-2009-3316
https://bugzilla.redhat.com/show_bug.cgi?id=515392 CONFIRM
http://www.vmware.com/security/advisories/VMSA-2009-0016.html CONFIRM
http://www.securityfocus.com/archive/1/507985/100/0/threaded
BUGTRAQ 20091120 VMSA-2009-0016 VMware vCenter and ESX update release and vMA patch release address multiple security issue in third party components
http://www.ubuntu.com/usn/USN-852-1
UBUNTU USN-852-1
http://www.openwall.com/lists/oss-security/2009/08/26/2
MLIST [oss-security] 20090826 Re: CVE request - kernel: information leak in sigaltstack
Exploit! http://www.exploit-db.com/exploits/9352
EXPLOIT-DB 9352 Linux Kernel <= 2.6.31-rc5 sigaltstack 4-Byte Stack Disclosure Exploit Author:Jon Oberheide Release Date:2009-08-04 (linux) local
http://www.openwall.com/lists/oss-security/2009/08/04/1
MLIST [oss-security] 20090804 CVE request - kernel: information leak in sigaltstack
http://www.openwall.com/lists/oss-security/2009/08/05/1
MLIST [oss-security] 20090805 Re: CVE request - kernel: information leak in sigaltstack
http://www.redhat.com/support/errata/RHSA-2009-1438.html
REDHAT RHSA-2009:1438
http://rhn.redhat.com/errata/RHSA-2009-1243.html
REDHAT RHSA-2009:1243

- Vulnerability Conditions

Vulnerability is valid if product versions listed below are used TOGETHER WITH(AND)

- Metasploit Modules Related To CVE-2009-2847

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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