ID CVE-2017-2816
Summary An exploitable buffer overflow vulnerability exists in the tag parsing functionality of LibOFX 0.9.11. A specially crafted OFX file can cause a write out of bounds resulting in a buffer overflow on the stack. An attacker can construct a malicious OFX file to trigger this vulnerability.
References
Vulnerable Configurations
  • cpe:2.3:a:libofx_project:libofx:0.9.11
    cpe:2.3:a:libofx_project:libofx:0.9.11
CVSS
Base: 6.8
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.
nessus via4
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2018-2064-1.NASL
    description This update for libofx fixes the following issues: Security issues fixed : - CVE-2017-2816: Fix an exploitable buffer overflow vulnerability in the tag parsing functionality (bsc#1058673). - CVE-2017-2920: Fix a buffer overflow vulnerability in sanitize_proprietary_tags in lib/ofx_preproc.cpp (bsc#1061964). - CVE-2017-14731: Fix remote denial of service via a crafted file in ofx_proc_file in ofx_preproc.cpp (bsc#1060437). 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 2019-02-21
    modified 2018-12-01
    plugin id 111368
    published 2018-07-27
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=111368
    title SUSE SLED12 Security Update : libofx (SUSE-SU-2018:2064-1)
  • NASL family FreeBSD Local Security Checks
    NASL id FREEBSD_PKG_58FAFEADCD13472FA9BDD0173BA1B04C.NASL
    description Talos developers report : An exploitable buffer overflow vulnerability exists in the tag parsing functionality of LibOFX 0.9.11. A specially crafted OFX file can cause a write out of bounds resulting in a buffer overflow on the stack. An attacker can construct a malicious OFX file to trigger this vulnerability.
    last seen 2019-02-21
    modified 2018-11-21
    plugin id 103524
    published 2017-09-28
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103524
    title FreeBSD : libofx -- exploitable buffer overflow (58fafead-cd13-472f-a9bd-d0173ba1b04c)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DLA-1192.NASL
    description CVE-2017-2816 An exploitable buffer overflow vulnerability exists in the tag parsing functionality of LibOFX 0.9.11. A specially crafted OFX file can cause a write out of bounds resulting in a buffer overflow on the stack. An attacker can construct a malicious OFX file to trigger this vulnerability. CVE-2017-14731 ofx_proc_file in ofx_preproc.cpp allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via a crafted file For Debian 7 'Wheezy', these problems have been fixed in version 1:0.9.4-2.1+deb7u1. We recommend that you upgrade your libofx packages. 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 2018-07-09
    plugin id 104751
    published 2017-11-27
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=104751
    title Debian DLA-1192-1 : libofx security update
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2018-820.NASL
    description This update for libofx fixes the following issues : The following security vulnerabilities have been addressed : - CVE-2017-2920: Fixed an exploitable buffer overflow in the tag parsing functionality, which could result in an out of bounds write and could be triggered via a specially crafted OFX file (boo#1061964) - CVE-2017-2816: Fixed another buffer overflow in the tag parsing functionality, which could result in an stack overflow and could be triggered via a specially crafted OFX file (boo#1058673)
    last seen 2019-02-21
    modified 2018-08-08
    plugin id 111585
    published 2018-08-08
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=111585
    title openSUSE Security Update : libofx (openSUSE-2018-820)
refmap via4
bid 100828
misc https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0317
mlist [debian-lts-announce] 20171126 [SECURITY] [DLA 1192-1] libofx security update
talos via4
id TALOS-2017-0317
last seen 2018-08-31
published 2017-09-13
reporter Talos Intelligence
source http://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0317
title LibOFX Tag Parsing Code Execution Vulnerability
Last major update 13-09-2017 - 14:29
Published 13-09-2017 - 14:29
Last modified 03-02-2018 - 21:29
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