Vulnerabilities > CVE-2008-3911 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Linux Kernel 2.6.26.3
Attack vector
UNKNOWN Attack complexity
UNKNOWN Privileges required
UNKNOWN Confidentiality impact
UNKNOWN Integrity impact
UNKNOWN Availability impact
UNKNOWN Summary
The proc_do_xprt function in net/sunrpc/sysctl.c in the Linux kernel 2.6.26.3 does not check the length of a certain buffer obtained from userspace, which allows local users to overflow a stack-based buffer and have unspecified other impact via a crafted read system call for the /proc/sys/sunrpc/transports file.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 1 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Buffer Overflow via Environment Variables This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
- Overflow Buffers Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
- Client-side Injection-induced Buffer Overflow This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
- Filter Failure through Buffer Overflow In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
- MIME Conversion An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
Nessus
| NASL family | SuSE Local Security Checks |
| NASL id | SUSE_11_0_KERNEL-081022.NASL |
| description | This patch updates the openSUSE 11.0 kernel to the 2.6.25.18 stable release. It also includes bugfixes and security fixes : CVE-2008-4410: The vmi_write_ldt_entry function in arch/x86/kernel/vmi_32.c in the Virtual Machine Interface (VMI) in the Linux kernel 2.6.26.5 invokes write_idt_entry where write_ldt_entry was intended, which allows local users to cause a denial of service (persistent application failure) via crafted function calls, related to the Java Runtime Environment (JRE) experiencing improper LDT selector state. sctp: Fix kernel panic while process protocol violation parameter. CVE-2008-3528: The ext[234] filesystem code fails to properly handle corrupted data structures. With a mounted filesystem image or partition that have corrupted dir->i_size and dir->i_blocks, a user performing either a read or write operation on the mounted image or partition can lead to a possible denial of service by spamming the logfile. CVE-2008-3526: Integer overflow in the sctp_setsockopt_auth_key function in net/sctp/socket.c in the Stream Control Transmission Protocol (sctp) implementation in the Linux kernel allows remote attackers to cause a denial of service (panic) or possibly have unspecified other impact via a crafted sca_keylength field associated with the SCTP_AUTH_KEY option. CVE-2008-3525: Added missing capability checks in sbni_ioctl(). CVE-2008-4576: SCTP in Linux kernel before 2.6.25.18 allows remote attackers to cause a denial of service (OOPS) via an INIT-ACK that states the peer does not support AUTH, which causes the sctp_process_init function to clean up active transports and triggers the OOPS when the T1-Init timer expires. CVE-2008-4445: The sctp_auth_ep_set_hmacs function in net/sctp/auth.c in the Stream Control Transmission Protocol (sctp) implementation in the Linux kernel before 2.6.26.4, when the SCTP-AUTH extension is enabled, does not verify that the identifier index is within the bounds established by SCTP_AUTH_HMAC_ID_MAX, which allows local users to obtain sensitive information via a crafted SCTP_HMAC_IDENT IOCTL request involving the sctp_getsockopt function. CVE-2008-3792: net/sctp/socket.c in the Stream Control Transmission Protocol (sctp) implementation in the Linux kernel 2.6.26.3 does not verify that the SCTP-AUTH extension is enabled before proceeding with SCTP-AUTH API functions, which allows attackers to cause a denial of service (panic) via vectors that result in calls to (1) sctp_setsockopt_auth_chunk, (2) sctp_setsockopt_hmac_ident, (3) sctp_setsockopt_auth_key, (4) sctp_setsockopt_active_key, (5) sctp_setsockopt_del_key, (6) sctp_getsockopt_maxburst, (7) sctp_getsockopt_active_key, (8) sctp_getsockopt_peer_auth_chunks, or (9) sctp_getsockopt_local_auth_chunks. CVE-2008-4113: The sctp_getsockopt_hmac_ident function in net/sctp/socket.c in the Stream Control Transmission Protocol (sctp) implementation in the Linux kernel before 2.6.26.4, when the SCTP-AUTH extension is enabled, relies on an untrusted length value to limit copying of data from kernel memory, which allows local users to obtain sensitive information via a crafted SCTP_HMAC_IDENT IOCTL request involving the sctp_getsockopt function. CVE-2008-3911: The proc_do_xprt function in net/sunrpc/sysctl.c in the Linux kernel 2.6.26.3 does not check the length of a certain buffer obtained from userspace, which allows local users to overflow a stack-based buffer and have unspecified other impact via a crafted read system call for the /proc/sys/sunrpc/transports file. |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 40010 |
| published | 2009-07-21 |
| reporter | This script is Copyright (C) 2009-2019 Tenable Network Security, Inc. |
| source | https://www.tenable.com/plugins/nessus/40010 |
| title | openSUSE Security Update : kernel (kernel-270) |
| code | |
Seebug
| bulletinFamily | exploit |
| description | BUGTRAQ ID: 31937 CVE(CAN) ID: CVE-2008-3911 Linux Kernel是开放源码操作系统Linux所使用的内核。 Linux Kernel的net/sunrpc/sysctl.c文件中的proc_do_xprt函数没有检查某些从用户域所获得缓冲区的长度，本地攻击者可以通过对/proc/sys/sunrpc/transports文件特制的读系统调用触发栈溢出，导致执行任意指令。 Linux kernel 2.6.26.3 Linux ----- 目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载： <a href=http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.26.4.tar.bz2 target=_blank>http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.26.4.tar.bz2</a> |
| id | SSV:4377 |
| last seen | 2017-11-19 |
| modified | 2008-10-31 |
| published | 2008-10-31 |
| reporter | Root |
| title | Linux Kernel proc_do_xprt()函数本地栈溢出漏洞 |
Statements
| contributor | Tomas Hoger |
| lastmodified | 2008-09-05 |
| organization | Red Hat |
| statement | Not vulnerable. This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, 5 or Red Hat Enterprise MRG. |
References
- http://lkml.org/lkml/2008/8/30/184
- http://lkml.org/lkml/2008/8/30/140
- http://www.openwall.com/lists/oss-security/2008/09/04/2
- http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00010.html
- http://www.securityfocus.com/bid/31937
- https://exchange.xforce.ibmcloud.com/vulnerabilities/45136
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=27df6f25ff218072e0e879a96beeb398a79cdbc8