ID CVE-2015-3283
Summary OpenAFS before 1.6.13 allows remote attackers to spoof bos commands via unspecified vectors.
Vulnerable Configurations
  • OpenAFS 1.6.12
Base: 6.8 (as of 12-08-2015 - 13:13)
  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf ( http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Blue Boxing
    This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
  • Target Programs with Elevated Privileges
    This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.
  • Manipulating Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.
nessus via4
  • NASL family Debian Local Security Checks
    description Several vulnerabilities have been found and solved in the distributed file system OpenAFS : CVE-2015-3282 vos leaked stack data clear on the wire when updating vldb entries. CVE-2015-3283 OpenAFS allowed remote attackers to spoof bos commands via unspecified vectors. CVE-2015-3285 pioctl wrongly used the pointer related to the RPC, allowing local users to cause a denial of service (memory corruption and kernel panic) via a crafted OSD FS command. CVE-2015-6587 vlserver allowed remote authenticated users to cause a denial of service (out-of-bounds read and crash) via a crafted regular expression in a VL_ListAttributesN2 RPC. CVE-2015-7762 and CVE-2015-7763 ('Tattletale') John Stumpo found that Rx ACK packets leaked plaintext of packets previously processed. For Debian 6 'Squeeze', these problems have been fixed in openafs version We recommend that you upgrade your OpenAFS packages. Learn more about the Debian Long Term Support (LTS) Project and how to apply these updates at: NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA 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 2018-07-06
    plugin id 86920
    published 2015-11-19
    reporter Tenable
    title Debian DLA-342-1 : openafs security update
  • NASL family Debian Local Security Checks
    description It was discovered that OpenAFS, the implementation of the distributed filesystem AFS, contained several flaws that could result in information leak, denial-of-service or kernel panic.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 85129
    published 2015-07-31
    reporter Tenable
    title Debian DSA-3320-1 : openafs - security update
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20150730_OPENAFS_ON_SL5_X.NASL
    description All server platforms * Fix for CVE-2015-3282: vos leaks stack data onto the wire in the clear when creating vldb entries * Workaround for CVE-2015-3283: bos commands can be spoofed, including some which alter server state * Disabled searching the VLDB by volume name regular expression to avoid possible buffer overruns in the volume location server All client platforms * Fix for CVE-2015-3284: pioctls leak kernel memory * Fix for CVE-2015-3285: kernel pioctl support for OSD command passing can trigger a panic After installing the update, you must restart your AFS connections and AFS services.
    last seen 2019-02-21
    modified 2018-12-28
    plugin id 85150
    published 2015-07-31
    reporter Tenable
    title Scientific Linux Security Update : openafs on SL5.x, SL6.x, SL7.x i386/x86_64
refmap via4
debian DSA-3320
mlist [OpenAFS-announce] 20150730 SECURITY RELEASE: 1.6.13 now available
sectrack 1033262
Last major update 12-08-2015 - 14:53
Published 12-08-2015 - 10:59
Last modified 20-09-2017 - 21:29
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