ID CVE-2016-4303
Summary The parse_string function in cjson.c in the cJSON library mishandles UTF8/16 strings, which allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a non-hex character in a JSON string, which triggers a heap-based buffer overflow.
References
Vulnerable Configurations
  • cpe:2.3:a:iperf_project:iperf:3.0.11
    cpe:2.3:a:iperf_project:iperf:3.0.11
  • cpe:2.3:a:iperf_project:iperf:3.1.2
    cpe:2.3:a:iperf_project:iperf:3.1.2
  • Novell SUSE Package Hub For SUSE Linux Enterprise 12
    cpe:2.3:a:novell:suse_package_hub_for_suse_linux_enterprise:12
  • openSUSE Leap 42.1
    cpe:2.3:o:opensuse:leap:42.1
  • OpenSUSE 13.2
    cpe:2.3:o:opensuse:opensuse:13.2
CVSS
Base: 7.5 (as of 27-09-2016 - 12:51)
Impact:
Exploitability:
CWE CWE-119
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.
  • Overflow Binary Resource File
    An attack of this type exploits a buffer overflow vulnerability in the handling of binary resources. Binary resources may include music files like MP3, image files like JPEG files, and any other binary file. These attacks may pass unnoticed to the client machine through normal usage of files, such as a browser loading a seemingly innocent JPEG file. This can allow the attacker access to the execution stack and execute arbitrary code in the target process. This attack pattern is a variant of standard buffer overflow attacks using an unexpected vector (binary files) to wrap its attack and open up a new attack vector. The attacker is required to either directly serve the binary content to the victim, or place it in a locale like a MP3 sharing application, for the victim to download. The attacker then is notified upon the download or otherwise locates the vulnerability opened up by the buffer overflow.
  • Buffer Overflow via Symbolic Links
    This type of attack leverages the use of symbolic links to cause buffer overflows. An attacker can try to create or manipulate a symbolic link file such that its contents result in out of bounds data. When the target software processes the symbolic link file, it could potentially overflow internal buffers with insufficient bounds checking.
  • Overflow Variables and Tags
    This type of attack leverages the use of tags or variables from a formatted configuration data to cause buffer overflow. The attacker crafts a malicious HTML page or configuration file that includes oversized strings, thus causing an overflow.
  • Buffer Overflow via Parameter Expansion
    In this attack, the target software is given input that the attacker knows will be modified and expanded in size during processing. This attack relies on the target software failing to anticipate that the expanded data may exceed some internal limit, thereby creating a buffer overflow.
  • Buffer Overflow in an API Call
    This attack targets libraries or shared code modules which are vulnerable to buffer overflow attacks. An attacker who has access to an API may try to embed malicious code in the API function call and exploit a buffer overflow vulnerability in the function's implementation. All clients that make use of the code library thus become vulnerable by association. This has a very broad effect on security across a system, usually affecting more than one software process.
  • Buffer Overflow in Local Command-Line Utilities
    This attack targets command-line utilities available in a number of shells. An attacker can leverage a vulnerability found in a command-line utility to escalate privilege to root.
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL PARTIAL PARTIAL
nessus via4
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-9693E82A25.NASL
    description New upstream release. Fixes CVE-2016-4303. ---- update to iperf3-3.1b3 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2016-10-18
    plugin id 92129
    published 2016-07-14
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=92129
    title Fedora 23 : iperf3 (2016-9693e82a25)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2016-1006.NASL
    description iperf was updated to the the following vulnerability : - CVE-2016-4303: A malicious client could have triggered a buffer overflow / heap corruption issue by sending a specially crafted JSON string, and possibly execute arbitrary code (boo#984453)
    last seen 2019-02-21
    modified 2016-10-13
    plugin id 93066
    published 2016-08-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=93066
    title openSUSE Security Update : iperf (openSUSE-2016-1006)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-D67864115D.NASL
    description New upstream release. Fixes CVE-2016-4303. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2016-10-18
    plugin id 92176
    published 2016-07-14
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=92176
    title Fedora 24 : iperf3 (2016-d67864115d)
  • NASL family FreeBSD Local Security Checks
    NASL id FREEBSD_PKG_D6BBF2D82CFC11E6800B080027468580.NASL
    description ESnet reports : A malicious process can connect to an iperf3 server and, by sending a malformed message on the control channel, corrupt the server process's heap area. This can lead to a crash (and a denial of service), or theoretically a remote code execution as the user running the iperf3 server. A malicious iperf3 server could potentially mount a similar attack on an iperf3 client.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 91527
    published 2016-06-09
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=91527
    title FreeBSD : iperf3 -- buffer overflow (d6bbf2d8-2cfc-11e6-800b-080027468580)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-45402A6F3B.NASL
    description New upstream release. Fixes CVE-2016-4303. ---- update to iperf3-3.1b3 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2016-10-18
    plugin id 92089
    published 2016-07-14
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=92089
    title Fedora 22 : iperf3 (2016-45402a6f3b)
refmap via4
confirm
misc
suse
  • openSUSE-SU-2016:2113
  • openSUSE-SU-2016:2121
talos via4
id TALOS-2016-0164
last seen 2018-08-31
published 2016-06-08
reporter Talos Intelligence
source http://www.talosintelligence.com/vulnerability_reports/TALOS-2016-0164
title ESnet iPerf3 JSON parse_string UTF Code Execution Vulnerability
Last major update 28-09-2016 - 11:28
Published 26-09-2016 - 10:59
Last modified 30-10-2018 - 12:27
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