Vulnerabilities > CVE-2014-0203 - Use After Free vulnerability in multiple products
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
The __do_follow_link function in fs/namei.c in the Linux kernel before 2.6.33 does not properly handle the last pathname component during use of certain filesystems, which allows local users to cause a denial of service (incorrect free operations and system crash) via an open system call.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Nessus
NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-2332-1.NASL description A bug was discovered in the handling of pathname components when used with an autofs direct mount. A local user could exploit this flaw to cause a denial of service (system crash) via an open system call. (CVE-2014-0203) Toralf Forster reported an error in the Linux kernels syscall auditing on 32 bit x86 platforms. A local user could exploit this flaw to cause a denial of service (OOPS and system crash). (CVE-2014-4508) An information leak was discovered in the control implemenation of the Advanced Linux Sound Architecture (ALSA) subsystem in the Linux kernel. A local user could exploit this flaw to obtain sensitive information from kernel memory. (CVE-2014-4652) A use-after-free flaw was discovered in the Advanced Linux Sound Architecture (ALSA) control implementation of the Linux kernel. A local user could exploit this flaw to cause a denial of service (system crash). (CVE-2014-4653) A authorization bug was discovered with the snd_ctl_elem_add function of the Advanced Linux Sound Architecture (ALSA) in the Linux kernel. A local user could exploit his bug to cause a denial of service (remove kernel controls). (CVE-2014-4654) A flaw discovered in how the snd_ctl_elem function of the Advanced Linux Sound Architecture (ALSA) handled a reference count. A local user could exploit this flaw to cause a denial of service (integer overflow and limit bypass). (CVE-2014-4655) An integer overflow flaw was discovered in the control implementation of the Advanced Linux Sound Architecture (ALSA). A local user could exploit this flaw to cause a denial of service (system crash). (CVE-2014-4656) An integer underflow flaw was discovered in the Linux kernel last seen 2020-06-01 modified 2020-06-02 plugin id 77488 published 2014-09-03 reporter Ubuntu Security Notice (C) 2014-2019 Canonical, Inc. / NASL script (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/77488 title Ubuntu 10.04 LTS : linux vulnerabilities (USN-2332-1) NASL family Scientific Linux Local Security Checks NASL id SL_20140619_KERNEL_ON_SL6_X.NASL description * A flaw was found in the way the Linux kernel last seen 2020-03-18 modified 2014-06-20 plugin id 76157 published 2014-06-20 reporter This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/76157 title Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20140619) NASL family CentOS Local Security Checks NASL id CENTOS_RHSA-2014-0771.NASL description Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way the Linux kernel last seen 2020-06-01 modified 2020-06-02 plugin id 76170 published 2014-06-23 reporter This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/76170 title CentOS 6 : kernel (CESA-2014:0771) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2014-0771.NASL description From Red Hat Security Advisory 2014:0771 : Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way the Linux kernel last seen 2020-06-01 modified 2020-06-02 plugin id 76155 published 2014-06-20 reporter This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/76155 title Oracle Linux 6 : kernel (ELSA-2014-0771) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2014-0771.NASL description Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way the Linux kernel last seen 2020-06-01 modified 2020-06-02 plugin id 76156 published 2014-06-20 reporter This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/76156 title RHEL 6 : kernel (RHSA-2014:0771) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2014-3043.NASL description Description of changes: kernel-uek [2.6.32-400.36.3.el6uek] - fix autofs/afs/etc. magic mountpoint breakage (Al Viro) [Orabug: 19028505] {CVE-2014-0203} - SELinux: Fix kernel BUG on empty security contexts. (Stephen Smalley) [Orabug: 19028381] {CVE-2014-1874} - floppy: don last seen 2020-06-01 modified 2020-06-02 plugin id 76186 published 2014-06-23 reporter This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/76186 title Oracle Linux 5 / 6 : unbreakable enterprise kernel (ELSA-2014-3043) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2014-0815.NASL description An updated rhev-hypervisor6 package that fixes several security issues is now available. The Red Hat Security Response Team has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The rhev-hypervisor6 package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine (KVM) hypervisor. It includes everything necessary to run and manage virtual machines: a subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent. Note: Red Hat Enterprise Virtualization Hypervisor is only available for the Intel 64 and AMD64 architectures with virtualization extensions. A flaw was found in the way GnuTLS parsed session IDs from ServerHello messages of the TLS/SSL handshake. A malicious server could use this flaw to send an excessively long session ID value, which would trigger a buffer overflow in a connecting TLS/SSL client application using GnuTLS, causing the client application to crash or, possibly, execute arbitrary code. (CVE-2014-3466) It was discovered that the asn1_get_bit_der() function of the libtasn1 library incorrectly reported the length of ASN.1-encoded data. Specially crafted ASN.1 input could cause an application using libtasn1 to perform an out-of-bounds access operation, causing the application to crash or, possibly, execute arbitrary code. (CVE-2014-3468) Multiple incorrect buffer boundary check issues were discovered in libtasn1. Specially crafted ASN.1 input could cause an application using libtasn1 to crash. (CVE-2014-3467) Multiple NULL pointer dereference flaws were found in libtasn1 last seen 2020-06-01 modified 2020-06-02 plugin id 79108 published 2014-11-11 reporter This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/79108 title RHEL 6 : rhev-hypervisor6 (RHSA-2014:0815) NASL family SuSE Local Security Checks NASL id SUSE_SU-2014-1138-1.NASL description The SUSE Linux Enterprise Server 11 SP1 LTSS received a roll up update to fix several security and non-security issues. The following security issues have been fixed : - CVE-2013-1860: Heap-based buffer overflow in the wdm_in_callback function in drivers/usb/class/cdc-wdm.c in the Linux kernel before 3.8.4 allows physically proximate attackers to cause a denial of service (system crash) or possibly execute arbitrary code via a crafted cdc-wdm USB device. (bnc#806431) - CVE-2013-4162: The udp_v6_push_pending_frames function in net/ipv6/udp.c in the IPv6 implementation in the Linux kernel through 3.10.3 makes an incorrect function call for pending data, which allows local users to cause a denial of service (BUG and system crash) via a crafted application that uses the UDP_CORK option in a setsockopt system call. (bnc#831058) - CVE-2014-0203: The __do_follow_link function in fs/namei.c in the Linux kernel before 2.6.33 does not properly handle the last pathname component during use of certain filesystems, which allows local users to cause a denial of service (incorrect free operations and system crash) via an open system call. (bnc#883526) - CVE-2014-3144: The (1) BPF_S_ANC_NLATTR and (2) BPF_S_ANC_NLATTR_NEST extension implementations in the sk_run_filter function in net/core/filter.c in the Linux kernel through 3.14.3 do not check whether a certain length value is sufficiently large, which allows local users to cause a denial of service (integer underflow and system crash) via crafted BPF instructions. NOTE: the affected code was moved to the __skb_get_nlattr and __skb_get_nlattr_nest functions before the vulnerability was announced. (bnc#877257) - CVE-2014-3145: The BPF_S_ANC_NLATTR_NEST extension implementation in the sk_run_filter function in net/core/filter.c in the Linux kernel through 3.14.3 uses the reverse order in a certain subtraction, which allows local users to cause a denial of service (over-read and system crash) via crafted BPF instructions. NOTE: the affected code was moved to the __skb_get_nlattr_nest function before the vulnerability was announced. (bnc#877257) - CVE-2014-3917: kernel/auditsc.c in the Linux kernel through 3.14.5, when CONFIG_AUDITSYSCALL is enabled with certain syscall rules, allows local users to obtain potentially sensitive single-bit values from kernel memory or cause a denial of service (OOPS) via a large value of a syscall number. (bnc#880484) - CVE-2014-4508: arch/x86/kernel/entry_32.S in the Linux kernel through 3.15.1 on 32-bit x86 platforms, when syscall auditing is enabled and the sep CPU feature flag is set, allows local users to cause a denial of service (OOPS and system crash) via an invalid syscall number, as demonstrated by number 1000. (bnc#883724) - CVE-2014-4652: Race condition in the tlv handler functionality in the snd_ctl_elem_user_tlv function in sound/core/control.c in the ALSA control implementation in the Linux kernel before 3.15.2 allows local users to obtain sensitive information from kernel memory by leveraging /dev/snd/controlCX access. (bnc#883795) - CVE-2014-4653: sound/core/control.c in the ALSA control implementation in the Linux kernel before 3.15.2 does not ensure possession of a read/write lock, which allows local users to cause a denial of service (use-after-free) and obtain sensitive information from kernel memory by leveraging /dev/snd/controlCX access. (bnc#883795) - CVE-2014-4654: The snd_ctl_elem_add function in sound/core/control.c in the ALSA control implementation in the Linux kernel before 3.15.2 does not check authorization for SNDRV_CTL_IOCTL_ELEM_REPLACE commands, which allows local users to remove kernel controls and cause a denial of service (use-after-free and system crash) by leveraging /dev/snd/controlCX access for an ioctl call. (bnc#883795) - CVE-2014-4655: The snd_ctl_elem_add function in sound/core/control.c in the ALSA control implementation in the Linux kernel before 3.15.2 does not properly maintain the user_ctl_count value, which allows local users to cause a denial of service (integer overflow and limit bypass) by leveraging /dev/snd/controlCX access for a large number of SNDRV_CTL_IOCTL_ELEM_REPLACE ioctl calls. (bnc#883795) - CVE-2014-4656: Multiple integer overflows in sound/core/control.c in the ALSA control implementation in the Linux kernel before 3.15.2 allow local users to cause a denial of service by leveraging /dev/snd/controlCX access, related to (1) index values in the snd_ctl_add function and (2) numid values in the snd_ctl_remove_numid_conflict function. (bnc#883795) - CVE-2014-4667: The sctp_association_free function in net/sctp/associola.c in the Linux kernel before 3.15.2 does not properly manage a certain backlog value, which allows remote attackers to cause a denial of service (socket outage) via a crafted SCTP packet. (bnc#885422) - CVE-2014-4699: The Linux kernel before 3.15.4 on Intel processors does not properly restrict use of a non-canonical value for the saved RIP address in the case of a system call that does not use IRET, which allows local users to leverage a race condition and gain privileges, or cause a denial of service (double fault), via a crafted application that makes ptrace and fork system calls. (bnc#885725) - CVE-2014-4943: The PPPoL2TP feature in net/l2tp/l2tp_ppp.c in the Linux kernel through 3.15.6 allows local users to gain privileges by leveraging data-structure differences between an l2tp socket and an inet socket. (bnc#887082) - CVE-2014-5077: The sctp_assoc_update function in net/sctp/associola.c in the Linux kernel through 3.15.8, when SCTP authentication is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and OOPS) by starting to establish an association between two endpoints immediately after an exchange of INIT and INIT ACK chunks to establish an earlier association between these endpoints in the opposite direction. (bnc#889173) - CVE-2013-7266: The mISDN_sock_recvmsg function in drivers/isdn/mISDN/socket.c in the Linux kernel before 3.12.4 does not ensure that a certain length value is consistent with the size of an associated data structure, which allows local users to obtain sensitive information from kernel memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg system call. (bnc#854722) - CVE-2013-7267: The atalk_recvmsg function in net/appletalk/ddp.c in the Linux kernel before 3.12.4 updates a certain length value without ensuring that an associated data structure has been initialized, which allows local users to obtain sensitive information from kernel memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg system call. (bnc#854722) - CVE-2013-7268: The ipx_recvmsg function in net/ipx/af_ipx.c in the Linux kernel before 3.12.4 updates a certain length value without ensuring that an associated data structure has been initialized, which allows local users to obtain sensitive information from kernel memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg system call. (bnc#854722) - CVE-2013-7269: The nr_recvmsg function in net/netrom/af_netrom.c in the Linux kernel before 3.12.4 updates a certain length value without ensuring that an associated data structure has been initialized, which allows local users to obtain sensitive information from kernel memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg system call. (bnc#854722) - CVE-2013-7270: The packet_recvmsg function in net/packet/af_packet.c in the Linux kernel before 3.12.4 updates a certain length value before ensuring that an associated data structure has been initialized, which allows local users to obtain sensitive information from kernel memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg system call. (bnc#854722) - CVE-2013-7271: The x25_recvmsg function in net/x25/af_x25.c in the Linux kernel before 3.12.4 updates a certain length value without ensuring that an associated data structure has been initialized, which allows local users to obtain sensitive information from kernel memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg system call. (bnc#854722) The following bugs have been fixed : - mac80211: Fix AP powersave TX vs. wakeup race (bnc#871797). - tcp: Allow to disable cwnd moderation in TCP_CA_Loss state (bnc#879921). - tcp: Adapt selected parts of RFC 5682 and PRR logic (bnc#879921). - flock: Fix allocation and BKL (bnc#882809). - sunrpc: Close a rare race in xs_tcp_setup_socket (bnc#794824, bnc#884530). - isofs: Fix unbounded recursion when processing relocated directories (bnc#892490). - bonding: Fix a race condition on cleanup in bond_send_unsolicited_na() (bnc#856756). - block: Fix race between request completion and timeout handling (bnc#881051). - Fix kABI breakage due to addition of user_ctl_lock (bnc#883795). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2015-05-20 plugin id 83640 published 2015-05-20 reporter This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/83640 title SUSE SLES11 Security Update : kernel (SUSE-SU-2014:1138-1) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-2333-1.NASL description A bug was discovered in the handling of pathname components when used with an autofs direct mount. A local user could exploit this flaw to cause a denial of service (system crash) via an open system call. (CVE-2014-0203) Toralf Forster reported an error in the Linux kernels syscall auditing on 32 bit x86 platforms. A local user could exploit this flaw to cause a denial of service (OOPS and system crash). (CVE-2014-4508) An information leak was discovered in the control implemenation of the Advanced Linux Sound Architecture (ALSA) subsystem in the Linux kernel. A local user could exploit this flaw to obtain sensitive information from kernel memory. (CVE-2014-4652) A use-after-free flaw was discovered in the Advanced Linux Sound Architecture (ALSA) control implementation of the Linux kernel. A local user could exploit this flaw to cause a denial of service (system crash). (CVE-2014-4653) A authorization bug was discovered with the snd_ctl_elem_add function of the Advanced Linux Sound Architecture (ALSA) in the Linux kernel. A local user could exploit his bug to cause a denial of service (remove kernel controls). (CVE-2014-4654) A flaw discovered in how the snd_ctl_elem function of the Advanced Linux Sound Architecture (ALSA) handled a reference count. A local user could exploit this flaw to cause a denial of service (integer overflow and limit bypass). (CVE-2014-4655) An integer overflow flaw was discovered in the control implementation of the Advanced Linux Sound Architecture (ALSA). A local user could exploit this flaw to cause a denial of service (system crash). (CVE-2014-4656) An integer underflow flaw was discovered in the Linux kernel last seen 2020-06-01 modified 2020-06-02 plugin id 77489 published 2014-09-03 reporter Ubuntu Security Notice (C) 2014-2019 Canonical, Inc. / NASL script (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/77489 title Ubuntu 10.04 LTS : linux-ec2 vulnerabilities (USN-2333-1)
Redhat
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References
- https://github.com/torvalds/linux/commit/86acdca1b63e6890540fa19495cfc708beff3d8b
- https://bugzilla.redhat.com/show_bug.cgi?id=1094363
- http://mirror.linux.org.au/linux/kernel/v2.6/ChangeLog-2.6.33
- http://secunia.com/advisories/59406
- http://linux.oracle.com/errata/ELSA-2014-0771.html
- http://linux.oracle.com/errata/ELSA-2014-3043.html
- http://secunia.com/advisories/59309
- http://secunia.com/advisories/59262
- http://secunia.com/advisories/59560
- http://www.securityfocus.com/bid/68125
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=86acdca1b63e6890540fa19495cfc708beff3d8b