cve-2009-1895
Vulnerability from cvelistv5
Published
2009-07-16 15:00
Modified
2024-08-07 05:27
Severity
Summary
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).
References
SourceURLTags
secalert@redhat.comhttp://blog.cr0.org/2009/06/bypassing-linux-null-pointer.htmlPatch, Third Party Advisory
secalert@redhat.comhttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f9fabcb58a6d26d6efde842d1703ac7cfa9427b6
secalert@redhat.comhttp://patchwork.kernel.org/patch/32598/Patch, Vendor Advisory
secalert@redhat.comhttp://secunia.com/advisories/35801Third Party Advisory
secalert@redhat.comhttp://secunia.com/advisories/36045Third Party Advisory
secalert@redhat.comhttp://secunia.com/advisories/36051Third Party Advisory
secalert@redhat.comhttp://secunia.com/advisories/36054Third Party Advisory
secalert@redhat.comhttp://secunia.com/advisories/36116Third Party Advisory
secalert@redhat.comhttp://secunia.com/advisories/36131Third Party Advisory
secalert@redhat.comhttp://secunia.com/advisories/36759Third Party Advisory
secalert@redhat.comhttp://secunia.com/advisories/37471Third Party Advisory
secalert@redhat.comhttp://wiki.rpath.com/Advisories:rPSA-2009-0111Third Party Advisory
secalert@redhat.comhttp://www.debian.org/security/2009/dsa-1844Third Party Advisory
secalert@redhat.comhttp://www.debian.org/security/2009/dsa-1845Third Party Advisory
secalert@redhat.comhttp://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc3Vendor Advisory
secalert@redhat.comhttp://www.mandriva.com/security/advisories?name=MDVSA-2011:051Third Party Advisory
secalert@redhat.comhttp://www.osvdb.org/55807Broken Link
secalert@redhat.comhttp://www.redhat.com/support/errata/RHSA-2009-1193.htmlThird Party Advisory
secalert@redhat.comhttp://www.redhat.com/support/errata/RHSA-2009-1438.htmlThird Party Advisory
secalert@redhat.comhttp://www.securityfocus.com/archive/1/505254/100/0/threadedThird Party Advisory, VDB Entry
secalert@redhat.comhttp://www.securityfocus.com/archive/1/507985/100/0/threadedThird Party Advisory, VDB Entry
secalert@redhat.comhttp://www.securityfocus.com/archive/1/512019/100/0/threadedThird Party Advisory, VDB Entry
secalert@redhat.comhttp://www.securityfocus.com/bid/35647Third Party Advisory, VDB Entry
secalert@redhat.comhttp://www.ubuntu.com/usn/usn-807-1Third Party Advisory
secalert@redhat.comhttp://www.vmware.com/security/advisories/VMSA-2009-0016.htmlThird Party Advisory
secalert@redhat.comhttp://www.vupen.com/english/advisories/2009/1866Patch, Third Party Advisory
secalert@redhat.comhttp://www.vupen.com/english/advisories/2009/3316Third Party Advisory
secalert@redhat.comhttps://bugs.launchpad.net/bugs/cve/2009-1895Third Party Advisory
secalert@redhat.comhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11768Third Party Advisory
secalert@redhat.comhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7826Third Party Advisory
secalert@redhat.comhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9453Third Party Advisory
secalert@redhat.comhttps://rhn.redhat.com/errata/RHSA-2009-1540.htmlThird Party Advisory
secalert@redhat.comhttps://rhn.redhat.com/errata/RHSA-2009-1550.htmlThird Party Advisory
secalert@redhat.comhttps://www.redhat.com/archives/fedora-package-announce/2009-August/msg00166.htmlThird Party Advisory
secalert@redhat.comhttps://www.redhat.com/archives/fedora-package-announce/2009-August/msg00223.htmlThird Party Advisory
Impacted products
VendorProduct
n/an/a
Show details on NVD website

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    "assignerShortName": "redhat",
    "cveId": "CVE-2009-1895",
    "datePublished": "2009-07-16T15:00:00",
    "dateReserved": "2009-06-02T00:00:00",
    "dateUpdated": "2024-08-07T05:27:54.804Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2009-1895\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2009-07-16T15:30:00.703\",\"lastModified\":\"2023-02-13T02:20:14.140\",\"vulnStatus\":\"Modified\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"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).\"},{\"lang\":\"es\",\"value\":\"El subsistema de personalidad en el Linux kernel anterior a v2.6.31-rc3 tiene establecido que PER_CLEAR_ON_SETID no borre las banderas ADDR_COMPAT_LAYOUT y MMAP_PAGE_ZERO cuando ejecuta un programa setuid o setgid, lo que facilita a usuarios locales aprovechar los detalles del uso actual de memoria para (1) llevar a cabo ataques de deferencia a punteros NULOS, (2) evitar el mecanismo de protecci\u00f3n mmap_min_addr o (3) rechazar  aleatoriamente el espacio en la capa  de direcciones (ASLR).\"}],\"metrics\":{\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:N/C:C/I:C/A:C\",\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"COMPLETE\",\"integrityImpact\":\"COMPLETE\",\"availabilityImpact\":\"COMPLETE\",\"baseScore\":7.2},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":3.9,\"impactScore\":10.0,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-16\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"2.6.31\",\"matchCriteriaId\":\"EA80C8C8-30E5-4DC6-B3CC-2BA506FBEC8D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.31:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"29C4A364-ED36-4AC8-AD1E-8BD18DD9324D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.31:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4049867A-E3B2-4DC1-8966-0477E6A5D582\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"0F92AB32-E7DE-43F4-B877-1F41FA162EC7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"8C757774-08E7-40AA-B532-6F705C8F7639\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"5C18C3CD-969B-4AA3-AE3A-BA4A188F8BFF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"C91D2DBF-6DA7-4BA2-9F29-8BD2725A4701\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"4747CC68-FAF4-482F-929A-9DA6C24CB663\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A5D026D0-EF78-438D-BEDD-FC8571F3ACEB\"}]}]}],\"references\":[{\"url\":\"http://blog.cr0.org/2009/06/bypassing-linux-null-pointer.html\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Patch\",\"Third 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  }
}


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