ID CVE-2009-2691
Summary The mm_for_maps function in fs/proc/base.c in the Linux kernel 2.6.30.4 and earlier allows local users to read (1) maps and (2) smaps files under proc/ via vectors related to ELF loading, a setuid process, and a race condition.
References
Vulnerable Configurations
  • Linux Kernel 2.6.30.2
    cpe:2.3:o:linux:linux_kernel:2.6.30.2
  • Linux Kernel 2.6.30.4
    cpe:2.3:o:linux:linux_kernel:2.6.30.4
  • cpe:2.3:o:linux:linux_kernel:2.6.30:rc7-git6
    cpe:2.3:o:linux:linux_kernel:2.6.30:rc7-git6
  • Linux Kernel 2.6.30 Release Candidate 6
    cpe:2.3:o:linux:linux_kernel:2.6.30:rc6
  • Linux Kernel 2.6.30 Release Candidate 2
    cpe:2.3:o:linux:linux_kernel:2.6.30:rc2
  • Linux Kernel 2.6.30 Release Candidate 3
    cpe:2.3:o:linux:linux_kernel:2.6.30:rc3
  • Linux Kernel 2.6.30 Release Candidate 5
    cpe:2.3:o:linux:linux_kernel:2.6.30:rc5
  • Linux Kernel 2.6.30
    cpe:2.3:o:linux:linux_kernel:2.6.30
  • Linux Kernel 2.6.30.1
    cpe:2.3:o:linux:linux_kernel:2.6.30.1
  • Linux Kernel 2.6.30 Release Candidate 1
    cpe:2.3:o:linux:linux_kernel:2.6.30:rc1
CVSS
Base: 2.1 (as of 17-08-2009 - 09:04)
Impact:
Exploitability:
CWE CWE-200
CAPEC
  • Subverting Environment Variable Values
    The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
  • Footprinting
    An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Browser Fingerprinting
    An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
  • Session Credential Falsification through Prediction
    This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.
  • Reusing Session IDs (aka Session Replay)
    This attack targets the reuse of valid session ID to spoof the target system in order to gain privileges. The attacker tries to reuse a stolen session ID used previously during a transaction to perform spoofing and session hijacking. Another name for this type of attack is Session Replay.
  • Using Slashes in Alternate Encoding
    This attack targets the encoding of the Slash characters. An attacker would try to exploit common filtering problems related to the use of the slashes characters to gain access to resources on the target host. Directory-driven systems, such as file systems and databases, typically use the slash character to indicate traversal between directories or other container components. For murky historical reasons, PCs (and, as a result, Microsoft OSs) choose to use a backslash, whereas the UNIX world typically makes use of the forward slash. The schizophrenic result is that many MS-based systems are required to understand both forms of the slash. This gives the attacker many opportunities to discover and abuse a number of common filtering problems. The goal of this pattern is to discover server software that only applies filters to one version, but not the other.
Access
VectorComplexityAuthentication
LOCAL LOW NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL NONE NONE
nessus via4
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2009-1548.NASL
    description From Red Hat Security Advisory 2009:1548 : Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 5. This update has been rated as having important security impact by the Red Hat Security Response Team. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security fixes : * a system with SELinux enforced was more permissive in allowing local users in the unconfined_t domain to map low memory areas even if the mmap_min_addr restriction was enabled. This could aid in the local exploitation of NULL pointer dereference bugs. (CVE-2009-2695, Important) * a NULL pointer dereference flaw was found in the eCryptfs implementation in the Linux kernel. A local attacker could use this flaw to cause a local denial of service or escalate their privileges. (CVE-2009-2908, Important) * a flaw was found in the NFSv4 implementation. The kernel would do an unnecessary permission check after creating a file. This check would usually fail and leave the file with the permission bits set to random values. Note: This is a server-side only issue. (CVE-2009-3286, Important) * a NULL pointer dereference flaw was found in each of the following functions in the Linux kernel: pipe_read_open(), pipe_write_open(), and pipe_rdwr_open(). When the mutex lock is not held, the i_pipe pointer could be released by other processes before it is used to update the pipe's reader and writer counters. This could lead to a local denial of service or privilege escalation. (CVE-2009-3547, Important) * a flaw was found in the Realtek r8169 Ethernet driver in the Linux kernel. pci_unmap_single() presented a memory leak that could lead to IOMMU space exhaustion and a system crash. An attacker on the local network could abuse this flaw by using jumbo frames for large amounts of network traffic. (CVE-2009-3613, Important) * missing initialization flaws were found in the Linux kernel. Padding data in several core network structures was not initialized properly before being sent to user-space. These flaws could lead to information leaks. (CVE-2009-3228, Moderate) Bug fixes : * with network bonding in the 'balance-tlb' or 'balance-alb' mode, the primary setting for the primary slave device was lost when said device was brought down. Bringing the slave back up did not restore the primary setting. (BZ#517971) * some faulty serial device hardware caused systems running the kernel-xen kernel to take a very long time to boot. (BZ#524153) * a caching bug in nfs_readdir() may have caused NFS clients to see duplicate files or not see all files in a directory. (BZ#526960) * the RHSA-2009:1243 update removed the mpt_msi_enable option, preventing certain scripts from running. This update adds the option back. (BZ#526963) * an iptables rule with the recent module and a hit count value greater than the ip_pkt_list_tot parameter (the default is 20), did not have any effect over packets, as the hit count could not be reached. (BZ#527434) * a check has been added to the IPv4 code to make sure that rt is not NULL, to help prevent future bugs in functions that call ip_append_data() from being exploitable. (BZ#527436) * a kernel panic occurred in certain conditions after reconfiguring a tape drive's block size. (BZ#528133) * when using the Linux Virtual Server (LVS) in a master and backup configuration, and propagating active connections on the master to the backup, the connection timeout value on the backup was hard-coded to 180 seconds, meaning connection information on the backup was soon lost. This could prevent the successful failover of connections. The timeout value can now be set via 'ipvsadm --set'. (BZ#528645) * a bug in nfs4_do_open_expired() could have caused the reclaimer thread on an NFSv4 client to enter an infinite loop. (BZ#529162) * MSI interrupts may not have been delivered for r8169 based network cards that have MSI interrupts enabled. This bug only affected certain systems. (BZ#529366) Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-07-18
    plugin id 67953
    published 2013-07-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=67953
    title Oracle Linux 5 : kernel (ELSA-2009-1548)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2009-1548.NASL
    description Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 5. This update has been rated as having important security impact by the Red Hat Security Response Team. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security fixes : * a system with SELinux enforced was more permissive in allowing local users in the unconfined_t domain to map low memory areas even if the mmap_min_addr restriction was enabled. This could aid in the local exploitation of NULL pointer dereference bugs. (CVE-2009-2695, Important) * a NULL pointer dereference flaw was found in the eCryptfs implementation in the Linux kernel. A local attacker could use this flaw to cause a local denial of service or escalate their privileges. (CVE-2009-2908, Important) * a flaw was found in the NFSv4 implementation. The kernel would do an unnecessary permission check after creating a file. This check would usually fail and leave the file with the permission bits set to random values. Note: This is a server-side only issue. (CVE-2009-3286, Important) * a NULL pointer dereference flaw was found in each of the following functions in the Linux kernel: pipe_read_open(), pipe_write_open(), and pipe_rdwr_open(). When the mutex lock is not held, the i_pipe pointer could be released by other processes before it is used to update the pipe's reader and writer counters. This could lead to a local denial of service or privilege escalation. (CVE-2009-3547, Important) * a flaw was found in the Realtek r8169 Ethernet driver in the Linux kernel. pci_unmap_single() presented a memory leak that could lead to IOMMU space exhaustion and a system crash. An attacker on the local network could abuse this flaw by using jumbo frames for large amounts of network traffic. (CVE-2009-3613, Important) * missing initialization flaws were found in the Linux kernel. Padding data in several core network structures was not initialized properly before being sent to user-space. These flaws could lead to information leaks. (CVE-2009-3228, Moderate) Bug fixes : * with network bonding in the 'balance-tlb' or 'balance-alb' mode, the primary setting for the primary slave device was lost when said device was brought down. Bringing the slave back up did not restore the primary setting. (BZ#517971) * some faulty serial device hardware caused systems running the kernel-xen kernel to take a very long time to boot. (BZ#524153) * a caching bug in nfs_readdir() may have caused NFS clients to see duplicate files or not see all files in a directory. (BZ#526960) * the RHSA-2009:1243 update removed the mpt_msi_enable option, preventing certain scripts from running. This update adds the option back. (BZ#526963) * an iptables rule with the recent module and a hit count value greater than the ip_pkt_list_tot parameter (the default is 20), did not have any effect over packets, as the hit count could not be reached. (BZ#527434) * a check has been added to the IPv4 code to make sure that rt is not NULL, to help prevent future bugs in functions that call ip_append_data() from being exploitable. (BZ#527436) * a kernel panic occurred in certain conditions after reconfiguring a tape drive's block size. (BZ#528133) * when using the Linux Virtual Server (LVS) in a master and backup configuration, and propagating active connections on the master to the backup, the connection timeout value on the backup was hard-coded to 180 seconds, meaning connection information on the backup was soon lost. This could prevent the successful failover of connections. The timeout value can now be set via 'ipvsadm --set'. (BZ#528645) * a bug in nfs4_do_open_expired() could have caused the reclaimer thread on an NFSv4 client to enter an infinite loop. (BZ#529162) * MSI interrupts may not have been delivered for r8169 based network cards that have MSI interrupts enabled. This bug only affected certain systems. (BZ#529366) Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 67068
    published 2013-06-29
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=67068
    title CentOS 5 : kernel (CESA-2009:1548)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2009-1541.NASL
    description Updated kernel packages that fix security issues are now available for Red Hat Enterprise Linux 4. This update has been rated as having important security impact by the Red Hat Security Response Team. The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues : * a NULL pointer dereference flaw was found in each of the following functions in the Linux kernel: pipe_read_open(), pipe_write_open(), and pipe_rdwr_open(). When the mutex lock is not held, the i_pipe pointer could be released by other processes before it is used to update the pipe's reader and writer counters. This could lead to a local denial of service or privilege escalation. (CVE-2009-3547, Important) Users should upgrade to these updated packages, which contain a backported patch to correct these issues. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 67067
    published 2013-06-29
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=67067
    title CentOS 4 : kernel (CESA-2009:1541)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2009-1550.NASL
    description Updated kernel packages that fix several security issues and multiple bugs are now available for Red Hat Enterprise Linux 3. This update has been rated as having important security impact by the Red Hat Security Response Team. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security fixes : * when fput() was called to close a socket, the __scm_destroy() function in the Linux kernel could make indirect recursive calls to itself. This could, potentially, lead to a denial of service issue. (CVE-2008-5029, Important) * the sendmsg() function in the Linux kernel did not block during UNIX socket garbage collection. This could, potentially, lead to a local denial of service. (CVE-2008-5300, Important) * the exit_notify() function in the Linux kernel did not properly reset the exit signal if a process executed a set user ID (setuid) application before exiting. This could allow a local, unprivileged user to elevate their privileges. (CVE-2009-1337, Important) * a flaw was found in the Intel PRO/1000 network driver in the Linux kernel. Frames with sizes near the MTU of an interface may be split across multiple hardware receive descriptors. Receipt of such a frame could leak through a validation check, leading to a corruption of the length check. A remote attacker could use this flaw to send a specially crafted packet that would cause a denial of service or code execution. (CVE-2009-1385, Important) * the ADDR_COMPAT_LAYOUT and MMAP_PAGE_ZERO flags were not cleared when a setuid or setgid program was executed. A local, unprivileged user could use this flaw to bypass the mmap_min_addr protection mechanism and perform a NULL pointer dereference attack, or bypass the Address Space Layout Randomization (ASLR) security feature. (CVE-2009-1895, Important) * it was discovered that, when executing a new process, the clear_child_tid pointer in the Linux kernel is not cleared. If this pointer points to a writable portion of the memory of the new program, the kernel could corrupt four bytes of memory, possibly leading to a local denial of service or privilege escalation. (CVE-2009-2848, Important) * missing initialization flaws were found in getname() implementations in the IrDA sockets, AppleTalk DDP protocol, NET/ROM protocol, and ROSE protocol implementations in the Linux kernel. Certain data structures in these getname() implementations were not initialized properly before being copied to user-space. These flaws could lead to an information leak. (CVE-2009-3002, Important) * a NULL pointer dereference flaw was found in each of the following functions in the Linux kernel: pipe_read_open(), pipe_write_open(), and pipe_rdwr_open(). When the mutex lock is not held, the i_pipe pointer could be released by other processes before it is used to update the pipe's reader and writer counters. This could lead to a local denial of service or privilege escalation. (CVE-2009-3547, Important) Bug fixes : * this update adds the mmap_min_addr tunable and restriction checks to help prevent unprivileged users from creating new memory mappings below the minimum address. This can help prevent the exploitation of NULL pointer dereference bugs. Note that mmap_min_addr is set to zero (disabled) by default for backwards compatibility. (BZ#512642) * a bridge reference count problem in IPv6 has been fixed. (BZ#457010) * enforce null-termination of user-supplied arguments to setsockopt(). (BZ#505514) * the gcc flag '-fno-delete-null-pointer-checks' was added to the kernel build options. This prevents gcc from optimizing out NULL pointer checks after the first use of a pointer. NULL pointer bugs are often exploited by attackers. Keeping these checks is a safety measure. (BZ#511185) * a check has been added to the IPv4 code to make sure that rt is not NULL, to help prevent future bugs in functions that call ip_append_data() from being exploitable. (BZ#520300) Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 67070
    published 2013-06-29
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=67070
    title CentOS 3 : kernel (CESA-2009:1550)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DSA-2005.NASL
    description NOTE: This kernel update marks the final planned kernel security update for the 2.6.24 kernel in the Debian release 'etch'. Although security support for 'etch' officially ended on Feburary 15th, 2010, this update was already in preparation before that date. Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service, sensitive memory leak or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2009-2691 Steve Beattie and Kees Cook reported an information leak in the maps and smaps files available under /proc. Local users may be able to read this data for setuid processes while the ELF binary is being loaded. - CVE-2009-2695 Eric Paris provided several fixes to increase the protection provided by the mmap_min_addr tunable against NULL pointer dereference vulnerabilities. - CVE-2009-3080 Dave Jones reported an issue in the gdth SCSI driver. A missing check for negative offsets in an ioctl call could be exploited by local users to create a denial of service or potentially gain elevated privileges. - CVE-2009-3726 Trond Myklebust reported an issue where a malicious NFS server could cause a denial of service condition on its clients by returning incorrect attributes during an open call. - CVE-2009-3889 Joe Malicki discovered an issue in the megaraid_sas driver. Insufficient permissions on the sysfs dbg_lvl interface allow local users to modify the debug logging behavior. - CVE-2009-4005 Roel Kluin discovered an issue in the hfc_usb driver, an ISDN driver for Colognechip HFC-S USB chip. A potential read overflow exists which may allow remote users to cause a denial of service condition (oops). - CVE-2009-4020 Amerigo Wang discovered an issue in the HFS filesystem that would allow a denial of service by a local user who has sufficient privileges to mount a specially crafted filesystem. - CVE-2009-4021 Anana V. Avati discovered an issue in the fuse subsystem. If the system is sufficiently low on memory, a local user can cause the kernel to dereference an invalid pointer resulting in a denial of service (oops) and potentially an escalation of privileges. - CVE-2009-4138 Jay Fenlason discovered an issue in the firewire stack that allows local users to cause a denial of service (oops or crash) by making a specially crafted ioctl call. - CVE-2009-4308 Ted Ts'o discovered an issue in the ext4 filesystem that allows local users to cause a denial of service (NULL pointer dereference). For this to be exploitable, the local user must have sufficient privileges to mount a filesystem. - CVE-2009-4536 CVE-2009-4538 Fabian Yamaguchi reported issues in the e1000 and e1000e drivers for Intel gigabit network adapters which allow remote users to bypass packet filters using specially crafted Ethernet frames. - CVE-2010-0003 Andi Kleen reported a defect which allows local users to gain read access to memory reachable by the kernel when the print-fatal-signals option is enabled. This option is disabled by default. - CVE-2010-0007 Florian Westphal reported a lack of capability checking in the ebtables netfilter subsystem. If the ebtables module is loaded, local users can add and modify ebtables rules. - CVE-2010-0291 Al Viro reported several issues with the mmap/mremap system calls that allow local users to cause a denial of service (system panic) or obtain elevated privileges. - CVE-2010-0410 Sebastian Krahmer discovered an issue in the netlink connector subsystem that permits local users to allocate large amounts of system memory resulting in a denial of service (out of memory). - CVE-2010-0415 Ramon de Carvalho Valle discovered an issue in the sys_move_pages interface, limited to amd64, ia64 and powerpc64 flavors in Debian. Local users can exploit this issue to cause a denial of service (system crash) or gain access to sensitive kernel memory. - CVE-2010-0622 Jerome Marchand reported an issue in the futex subsystem that allows a local user to force an invalid futex state which results in a denial of service (oops).
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 44951
    published 2010-03-02
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=44951
    title Debian DSA-2005-1 : linux-2.6.24 - privilege escalation/denial of service/sensitive memory leak
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2009-1548.NASL
    description Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 5. This update has been rated as having important security impact by the Red Hat Security Response Team. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security fixes : * a system with SELinux enforced was more permissive in allowing local users in the unconfined_t domain to map low memory areas even if the mmap_min_addr restriction was enabled. This could aid in the local exploitation of NULL pointer dereference bugs. (CVE-2009-2695, Important) * a NULL pointer dereference flaw was found in the eCryptfs implementation in the Linux kernel. A local attacker could use this flaw to cause a local denial of service or escalate their privileges. (CVE-2009-2908, Important) * a flaw was found in the NFSv4 implementation. The kernel would do an unnecessary permission check after creating a file. This check would usually fail and leave the file with the permission bits set to random values. Note: This is a server-side only issue. (CVE-2009-3286, Important) * a NULL pointer dereference flaw was found in each of the following functions in the Linux kernel: pipe_read_open(), pipe_write_open(), and pipe_rdwr_open(). When the mutex lock is not held, the i_pipe pointer could be released by other processes before it is used to update the pipe's reader and writer counters. This could lead to a local denial of service or privilege escalation. (CVE-2009-3547, Important) * a flaw was found in the Realtek r8169 Ethernet driver in the Linux kernel. pci_unmap_single() presented a memory leak that could lead to IOMMU space exhaustion and a system crash. An attacker on the local network could abuse this flaw by using jumbo frames for large amounts of network traffic. (CVE-2009-3613, Important) * missing initialization flaws were found in the Linux kernel. Padding data in several core network structures was not initialized properly before being sent to user-space. These flaws could lead to information leaks. (CVE-2009-3228, Moderate) Bug fixes : * with network bonding in the 'balance-tlb' or 'balance-alb' mode, the primary setting for the primary slave device was lost when said device was brought down. Bringing the slave back up did not restore the primary setting. (BZ#517971) * some faulty serial device hardware caused systems running the kernel-xen kernel to take a very long time to boot. (BZ#524153) * a caching bug in nfs_readdir() may have caused NFS clients to see duplicate files or not see all files in a directory. (BZ#526960) * the RHSA-2009:1243 update removed the mpt_msi_enable option, preventing certain scripts from running. This update adds the option back. (BZ#526963) * an iptables rule with the recent module and a hit count value greater than the ip_pkt_list_tot parameter (the default is 20), did not have any effect over packets, as the hit count could not be reached. (BZ#527434) * a check has been added to the IPv4 code to make sure that rt is not NULL, to help prevent future bugs in functions that call ip_append_data() from being exploitable. (BZ#527436) * a kernel panic occurred in certain conditions after reconfiguring a tape drive's block size. (BZ#528133) * when using the Linux Virtual Server (LVS) in a master and backup configuration, and propagating active connections on the master to the backup, the connection timeout value on the backup was hard-coded to 180 seconds, meaning connection information on the backup was soon lost. This could prevent the successful failover of connections. The timeout value can now be set via 'ipvsadm --set'. (BZ#528645) * a bug in nfs4_do_open_expired() could have caused the reclaimer thread on an NFSv4 client to enter an infinite loop. (BZ#529162) * MSI interrupts may not have been delivered for r8169 based network cards that have MSI interrupts enabled. This bug only affected certain systems. (BZ#529366) Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-12-20
    plugin id 42358
    published 2009-11-04
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=42358
    title RHEL 5 : kernel (RHSA-2009:1548)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2009-9044.NASL
    description Security fixes: - CVE-2009-2691: Information disclosure in proc filesystem - CVE-2009-2848: execve: must clear current->child_tid - CVE-2009-2849: md: NULL pointer dereference - CVE-2009-2847: Information leak in do_sigaltstack Restore missing LIRC drivers, dropped in previous release. Backport upstream fixes that further improve the security of mmap of low addresses. (CVE-2009-2695) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2016-12-08
    plugin id 40780
    published 2009-08-27
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=40780
    title Fedora 11 : kernel-2.6.29.6-217.2.16.fc11 (2009-9044)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2009-1550.NASL
    description Updated kernel packages that fix several security issues and multiple bugs are now available for Red Hat Enterprise Linux 3. This update has been rated as having important security impact by the Red Hat Security Response Team. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security fixes : * when fput() was called to close a socket, the __scm_destroy() function in the Linux kernel could make indirect recursive calls to itself. This could, potentially, lead to a denial of service issue. (CVE-2008-5029, Important) * the sendmsg() function in the Linux kernel did not block during UNIX socket garbage collection. This could, potentially, lead to a local denial of service. (CVE-2008-5300, Important) * the exit_notify() function in the Linux kernel did not properly reset the exit signal if a process executed a set user ID (setuid) application before exiting. This could allow a local, unprivileged user to elevate their privileges. (CVE-2009-1337, Important) * a flaw was found in the Intel PRO/1000 network driver in the Linux kernel. Frames with sizes near the MTU of an interface may be split across multiple hardware receive descriptors. Receipt of such a frame could leak through a validation check, leading to a corruption of the length check. A remote attacker could use this flaw to send a specially crafted packet that would cause a denial of service or code execution. (CVE-2009-1385, Important) * the ADDR_COMPAT_LAYOUT and MMAP_PAGE_ZERO flags were not cleared when a setuid or setgid program was executed. A local, unprivileged user could use this flaw to bypass the mmap_min_addr protection mechanism and perform a NULL pointer dereference attack, or bypass the Address Space Layout Randomization (ASLR) security feature. (CVE-2009-1895, Important) * it was discovered that, when executing a new process, the clear_child_tid pointer in the Linux kernel is not cleared. If this pointer points to a writable portion of the memory of the new program, the kernel could corrupt four bytes of memory, possibly leading to a local denial of service or privilege escalation. (CVE-2009-2848, Important) * missing initialization flaws were found in getname() implementations in the IrDA sockets, AppleTalk DDP protocol, NET/ROM protocol, and ROSE protocol implementations in the Linux kernel. Certain data structures in these getname() implementations were not initialized properly before being copied to user-space. These flaws could lead to an information leak. (CVE-2009-3002, Important) * a NULL pointer dereference flaw was found in each of the following functions in the Linux kernel: pipe_read_open(), pipe_write_open(), and pipe_rdwr_open(). When the mutex lock is not held, the i_pipe pointer could be released by other processes before it is used to update the pipe's reader and writer counters. This could lead to a local denial of service or privilege escalation. (CVE-2009-3547, Important) Bug fixes : * this update adds the mmap_min_addr tunable and restriction checks to help prevent unprivileged users from creating new memory mappings below the minimum address. This can help prevent the exploitation of NULL pointer dereference bugs. Note that mmap_min_addr is set to zero (disabled) by default for backwards compatibility. (BZ#512642) * a bridge reference count problem in IPv6 has been fixed. (BZ#457010) * enforce null-termination of user-supplied arguments to setsockopt(). (BZ#505514) * the gcc flag '-fno-delete-null-pointer-checks' was added to the kernel build options. This prevents gcc from optimizing out NULL pointer checks after the first use of a pointer. NULL pointer bugs are often exploited by attackers. Keeping these checks is a safety measure. (BZ#511185) * a check has been added to the IPv4 code to make sure that rt is not NULL, to help prevent future bugs in functions that call ip_append_data() from being exploitable. (BZ#520300) Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-12-20
    plugin id 42360
    published 2009-11-04
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=42360
    title RHEL 3 : kernel (RHSA-2009:1550)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2009-1550.NASL
    description From Red Hat Security Advisory 2009:1550 : Updated kernel packages that fix several security issues and multiple bugs are now available for Red Hat Enterprise Linux 3. This update has been rated as having important security impact by the Red Hat Security Response Team. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security fixes : * when fput() was called to close a socket, the __scm_destroy() function in the Linux kernel could make indirect recursive calls to itself. This could, potentially, lead to a denial of service issue. (CVE-2008-5029, Important) * the sendmsg() function in the Linux kernel did not block during UNIX socket garbage collection. This could, potentially, lead to a local denial of service. (CVE-2008-5300, Important) * the exit_notify() function in the Linux kernel did not properly reset the exit signal if a process executed a set user ID (setuid) application before exiting. This could allow a local, unprivileged user to elevate their privileges. (CVE-2009-1337, Important) * a flaw was found in the Intel PRO/1000 network driver in the Linux kernel. Frames with sizes near the MTU of an interface may be split across multiple hardware receive descriptors. Receipt of such a frame could leak through a validation check, leading to a corruption of the length check. A remote attacker could use this flaw to send a specially crafted packet that would cause a denial of service or code execution. (CVE-2009-1385, Important) * the ADDR_COMPAT_LAYOUT and MMAP_PAGE_ZERO flags were not cleared when a setuid or setgid program was executed. A local, unprivileged user could use this flaw to bypass the mmap_min_addr protection mechanism and perform a NULL pointer dereference attack, or bypass the Address Space Layout Randomization (ASLR) security feature. (CVE-2009-1895, Important) * it was discovered that, when executing a new process, the clear_child_tid pointer in the Linux kernel is not cleared. If this pointer points to a writable portion of the memory of the new program, the kernel could corrupt four bytes of memory, possibly leading to a local denial of service or privilege escalation. (CVE-2009-2848, Important) * missing initialization flaws were found in getname() implementations in the IrDA sockets, AppleTalk DDP protocol, NET/ROM protocol, and ROSE protocol implementations in the Linux kernel. Certain data structures in these getname() implementations were not initialized properly before being copied to user-space. These flaws could lead to an information leak. (CVE-2009-3002, Important) * a NULL pointer dereference flaw was found in each of the following functions in the Linux kernel: pipe_read_open(), pipe_write_open(), and pipe_rdwr_open(). When the mutex lock is not held, the i_pipe pointer could be released by other processes before it is used to update the pipe's reader and writer counters. This could lead to a local denial of service or privilege escalation. (CVE-2009-3547, Important) Bug fixes : * this update adds the mmap_min_addr tunable and restriction checks to help prevent unprivileged users from creating new memory mappings below the minimum address. This can help prevent the exploitation of NULL pointer dereference bugs. Note that mmap_min_addr is set to zero (disabled) by default for backwards compatibility. (BZ#512642) * a bridge reference count problem in IPv6 has been fixed. (BZ#457010) * enforce null-termination of user-supplied arguments to setsockopt(). (BZ#505514) * the gcc flag '-fno-delete-null-pointer-checks' was added to the kernel build options. This prevents gcc from optimizing out NULL pointer checks after the first use of a pointer. NULL pointer bugs are often exploited by attackers. Keeping these checks is a safety measure. (BZ#511185) * a check has been added to the IPv4 code to make sure that rt is not NULL, to help prevent future bugs in functions that call ip_append_data() from being exploitable. (BZ#520300) Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-07-18
    plugin id 67955
    published 2013-07-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=67955
    title Oracle Linux 3 : kernel (ELSA-2009-1550)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2009-1541.NASL
    description Updated kernel packages that fix security issues are now available for Red Hat Enterprise Linux 4. This update has been rated as having important security impact by the Red Hat Security Response Team. The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues : * a NULL pointer dereference flaw was found in each of the following functions in the Linux kernel: pipe_read_open(), pipe_write_open(), and pipe_rdwr_open(). When the mutex lock is not held, the i_pipe pointer could be released by other processes before it is used to update the pipe's reader and writer counters. This could lead to a local denial of service or privilege escalation. (CVE-2009-3547, Important) Users should upgrade to these updated packages, which contain a backported patch to correct these issues. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-11-27
    plugin id 42357
    published 2009-11-04
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=42357
    title RHEL 4 : kernel (RHSA-2009:1541)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2009-1541.NASL
    description From Red Hat Security Advisory 2009:1541 : Updated kernel packages that fix security issues are now available for Red Hat Enterprise Linux 4. This update has been rated as having important security impact by the Red Hat Security Response Team. The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues : * a NULL pointer dereference flaw was found in each of the following functions in the Linux kernel: pipe_read_open(), pipe_write_open(), and pipe_rdwr_open(). When the mutex lock is not held, the i_pipe pointer could be released by other processes before it is used to update the pipe's reader and writer counters. This could lead to a local denial of service or privilege escalation. (CVE-2009-3547, Important) Users should upgrade to these updated packages, which contain a backported patch to correct these issues. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-07-18
    plugin id 67952
    published 2013-07-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=67952
    title Oracle Linux 4 : kernel (ELSA-2009-1541)
redhat via4
advisories
rhsa
id RHSA-2009:1540
refmap via4
bid 36019
confirm
debian DSA-2005
fedora FEDORA-2009-9044
mlist
  • [linux-kernel] 20090623 [PATCH 0/1] mm_for_maps: simplify, use ptrace_may_access()
  • [linux-kernel] 20090623 [PATCH 1/1] mm_for_maps: simplify, use ptrace_may_access()
  • [linux-kernel] 20090710 [PATCH 1/2] mm_for_maps: shift down_read(mmap_sem) to the caller
  • [linux-kernel] 20090710 [PATCH 2/2] mm_for_maps: take ->cred_guard_mutex to fix the race
  • [oss-security] 20090811 CVE-2009-2691 kernel: /proc/$pid/maps visible during initial setuid ELF loading
secunia
  • 36265
  • 36501
vupen ADV-2009-2246
xf linux-kernel-mmformaps-info-disclosure(52401)
statements via4
contributor Mark J Cox
lastmodified 2009-11-04
organization Red Hat
statement The Red Hat Security Response Team has rated this issue as having moderate security impact. We currently have no plans to fix this flaw in Red Hat Enterprise Linux 3, 4, and 5 as it is not possible to trigger the information leak if the suid_dumpable tunable is set to zero (which is the default). It was addressed in Red Hat Enterprise MRG via: https://rhn.redhat.com/errata/RHSA-2009-1540.html
Last major update 19-03-2012 - 00:00
Published 14-08-2009 - 11:16
Last modified 16-08-2017 - 21:30
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