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CVE-2009-1895

Good to know:

Date: July 16, 2009

The personality subsystem in the Linux kernel before 2.6.31-rc3 has a PER_CLEAR_ON_SETID setting that does not clear the ADDR_COMPAT_LAYOUT and MMAP_PAGE_ZERO flags when executing a setuid or setgid program, which makes it easier for local users to leverage the details of memory usage to (1) conduct NULL pointer dereference attacks, (2) bypass the mmap_min_addr protection mechanism, or (3) defeat address space layout randomization (ASLR).

Language: C

Severity Score

8.4

Related Resources (39)

Url: http://www.vupen.com/english/advisories/2009/3316

Url: http://secunia.com/advisories/35801

Url: http://www.redhat.com/support/errata/RHSA-2009-1193.html

Url: http://secunia.com/advisories/36759

Url: http://www.securityfocus.com/archive/1/512019/100/0/threaded

Url: https://nvd.nist.gov/vuln/detail/CVE-2009-1895

Url: http://secunia.com/advisories/36131

Url: https://rhn.redhat.com/errata/RHSA-2009-1550.html

Url: http://secunia.com/advisories/36054

Url: http://www.securityfocus.com/archive/1/505254/100/0/threaded

Url: https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9453

Url: http://secunia.com/advisories/36116

Url: http://wiki.rpath.com/Advisories:rPSA-2009-0111

Url: http://www.mandriva.com/security/advisories?name=MDVSA-2011:051

Url: http://patchwork.kernel.org/patch/32598/

Url: http://secunia.com/advisories/37471

Url: http://www.osvdb.org/55807

Url: http://www.ubuntu.com/usn/usn-807-1

Url: http://www.vupen.com/english/advisories/2009/1866

Url: https://access.redhat.com/security/cve/CVE-2009-1895

Url: https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11768

Url: https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00223.html

Url: https://rhn.redhat.com/errata/RHSA-2009-1540.html

Url: http://www.debian.org/security/2009/dsa-1844

Url: http://www.debian.org/security/2009/dsa-1845

Url: http://blog.cr0.org/2009/06/bypassing-linux-null-pointer.html

Url: http://www.vmware.com/security/advisories/VMSA-2009-0016.html

Url: http://secunia.com/advisories/36045

Url: http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc3

Url: http://www.securityfocus.com/archive/1/507985/100/0/threaded

Url: http://www.redhat.com/support/errata/RHSA-2009-1438.html

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2009-1895

Url: http://secunia.com/advisories/36051

Url: https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7826

Url: https://bugs.launchpad.net/bugs/cve/2009-1895

Url: http://www.securityfocus.com/bid/35647

Url: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f9fabcb58a6d26d6efde842d1703ac7cfa9427b6

Url: https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00166.html

Url: https://www.mend.io/vulnerability-database/CVE-2009-1895

Severity Score

8.4

Weakness Type (CWE)

Configuration

CWE-16

Top Fix

Upgrade Version

Upgrade to version v2.6.32

Learn More

CVSS v3.1

Base Score:	8.4
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	7.2
Access Vector (AV):	LOCAL
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	COMPLETE
Integrity (I):	COMPLETE
Availability (A):	COMPLETE
Additional information:

Mend.io Vulnerability Database

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CVE-2009-1895

Good to know:

Date: July 16, 2009

Language: C

Severity Score

Related Resources (39)

Severity Score

Weakness Type (CWE)

Top Fix

Upgrade Version

CVSS v3.1

CVSS v2

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