Vulnerabilities > CVE-2018-5784 - Resource Exhaustion vulnerability in multiple products
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
PARTIAL Summary
In LibTIFF 4.0.9, there is an uncontrolled resource consumption in the TIFFSetDirectory function of tif_dir.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted tif file. This occurs because the declared number of directory entries is not validated against the actual number of directory entries.
Vulnerable Configurations
Part | Description | Count |
---|---|---|
Application | 1 | |
OS | 3 | |
OS | 3 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- XML Ping of the Death An attacker initiates a resource depletion attack where a large number of small XML messages are delivered at a sufficiently rapid rate to cause a denial of service or crash of the target. Transactions such as repetitive SOAP transactions can deplete resources faster than a simple flooding attack because of the additional resources used by the SOAP protocol and the resources necessary to process SOAP messages. The transactions used are immaterial as long as they cause resource utilization on the target. In other words, this is a normal flooding attack augmented by using messages that will require extra processing on the target.
- XML Entity Expansion An attacker submits an XML document to a target application where the XML document uses nested entity expansion to produce an excessively large output XML. XML allows the definition of macro-like structures that can be used to simplify the creation of complex structures. However, this capability can be abused to create excessive demands on a processor's CPU and memory. A small number of nested expansions can result in an exponential growth in demands on memory.
- Inducing Account Lockout An attacker leverages the security functionality of the system aimed at thwarting potential attacks to launch a denial of service attack against a legitimate system user. Many systems, for instance, implement a password throttling mechanism that locks an account after a certain number of incorrect log in attempts. An attacker can leverage this throttling mechanism to lock a legitimate user out of their own account. The weakness that is being leveraged by an attacker is the very security feature that has been put in place to counteract attacks.
- Violating Implicit Assumptions Regarding XML Content (aka XML Denial of Service (XDoS)) XML Denial of Service (XDoS) can be applied to any technology that utilizes XML data. This is, of course, most distributed systems technology including Java, .Net, databases, and so on. XDoS is most closely associated with web services, SOAP, and Rest, because remote service requesters can post malicious XML payloads to the service provider designed to exhaust the service provider's memory, CPU, and/or disk space. The main weakness in XDoS is that the service provider generally must inspect, parse, and validate the XML messages to determine routing, workflow, security considerations, and so on. It is exactly these inspection, parsing, and validation routines that XDoS targets. There are three primary attack vectors that XDoS can navigate Target CPU through recursion: attacker creates a recursive payload and sends to service provider Target memory through jumbo payloads: service provider uses DOM to parse XML. DOM creates in memory representation of XML document, but when document is very large (for example, north of 1 Gb) service provider host may exhaust memory trying to build memory objects. XML Ping of death: attack service provider with numerous small files that clog the system. All of the above attacks exploit the loosely coupled nature of web services, where the service provider has little to no control over the service requester and any messages the service requester sends.
Nessus
NASL family Debian Local Security Checks NASL id DEBIAN_DSA-4349.NASL description Multiple vulnerabilities have been discovered in the libtiff library and the included tools, which may result in denial of service or the execution of arbitrary code if malformed image files are processed. last seen 2020-06-01 modified 2020-06-02 plugin id 119314 published 2018-12-01 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/119314 title Debian DSA-4349-1 : tiff - security update NASL family SuSE Local Security Checks NASL id OPENSUSE-2018-443.NASL description This update for tiff fixes the following issues : - CVE-2017-9935: There was a heap-based buffer overflow in the t2p_write_pdf function in tools/tiff2pdf.c. This heap overflow could lead to different damages. For example, a crafted TIFF document can lead to an out-of-bounds read in TIFFCleanup, an invalid free in TIFFClose or t2p_free, memory corruption in t2p_readwrite_pdf_image, or a double free in t2p_free. Given these possibilities, it probably could cause arbitrary code execution (bsc#1046077) - CVE-2017-17973: There is a heap-based use-after-free in the t2p_writeproc function in tiff2pdf.c. (bsc#1074318) - CVE-2018-5784: There is an uncontrolled resource consumption in the TIFFSetDirectory function of tif_dir.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted tif file. This occurs because the declared number of directory entries is not validated against the actual number of directory entries (bsc#1081690) This update was imported from the SUSE:SLE-12:Update update project. last seen 2020-06-05 modified 2018-05-11 plugin id 109716 published 2018-05-11 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/109716 title openSUSE Security Update : tiff (openSUSE-2018-443) NASL family SuSE Local Security Checks NASL id SUSE_SU-2018-1180-1.NASL description This update for tiff fixes the following issues : - CVE-2017-9935: There was a heap-based buffer overflow in the t2p_write_pdf function in tools/tiff2pdf.c. This heap overflow could lead to different damages. For example, a crafted TIFF document can lead to an out-of-bounds read in TIFFCleanup, an invalid free in TIFFClose or t2p_free, memory corruption in t2p_readwrite_pdf_image, or a double free in t2p_free. Given these possibilities, it probably could cause arbitrary code execution (bsc#1046077) - CVE-2017-17973: There is a heap-based use-after-free in the t2p_writeproc function in tiff2pdf.c. (bsc#1074318) - CVE-2018-5784: There is an uncontrolled resource consumption in the TIFFSetDirectory function of tif_dir.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted tif file. This occurs because the declared number of directory entries is not validated against the actual number of directory entries (bsc#1081690) 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 2020-06-01 modified 2020-06-02 plugin id 109675 published 2018-05-10 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/109675 title SUSE SLED12 / SLES12 Security Update : tiff (SUSE-SU-2018:1180-1) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3602-1.NASL description It was discovered that LibTIFF incorrectly handled certain malformed images. If a user or automated system were tricked into opening a specially crafted image, a remote attacker could crash the application, leading to a denial of service, or possibly execute arbitrary code with user privileges. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 108513 published 2018-03-21 reporter Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/108513 title Ubuntu 14.04 LTS / 16.04 LTS : tiff vulnerabilities (USN-3602-1) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3606-1.NASL description It was discovered that LibTIFF incorrectly handled certain malformed images. If a user or automated system were tricked into opening a specially crafted image, a remote attacker could crash the application, leading to a denial of service, or possibly execute arbitrary code with user privileges. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 108657 published 2018-03-27 reporter Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/108657 title Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : tiff vulnerabilities (USN-3606-1) NASL family Fedora Local Security Checks NASL id FEDORA_2018-E6A51E99A4.NASL description Added fix for **CVE-2018-5784**. 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 2020-06-05 modified 2018-03-29 plugin id 108702 published 2018-03-29 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/108702 title Fedora 27 : libtiff (2018-e6a51e99a4) NASL family Fedora Local Security Checks NASL id FEDORA_2018-7A0F7F5768.NASL description Added fix for **CVE-2018-5784**. 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 2020-06-05 modified 2019-01-03 plugin id 120550 published 2019-01-03 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/120550 title Fedora 28 : libtiff (2018-7a0f7f5768) NASL family PhotonOS Local Security Checks NASL id PHOTONOS_PHSA-2018-2_0-0039_LIBTIFF.NASL description An update of the libtiff package has been released. last seen 2020-03-17 modified 2019-02-07 plugin id 121936 published 2019-02-07 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/121936 title Photon OS 2.0: Libtiff PHSA-2018-2.0-0039 NASL family PhotonOS Local Security Checks NASL id PHOTONOS_PHSA-2018-2_0-0039.NASL description An update of {'openjdk8', 'httpd', 'librelp', 'zsh', 'libvirt', 'libtiff'} packages of Photon OS has been released. last seen 2019-02-21 modified 2019-02-07 plugin id 111298 published 2018-07-24 reporter Tenable source https://www.tenable.com/plugins/index.php?view=single&id=111298 title Photon OS 2.0 : openjdk8 / httpd / librelp / zsh / libvirt (PhotonOS-PHSA-2018-2.0-0039) (deprecated) NASL family Debian Local Security Checks NASL id DEBIAN_DLA-1391.NASL description Multiple vulnerabilities have been discovered in the libtiff library and the included tools, which may result in denial of service : CVE-2017-11613 Ddenial of service vulnerability in the TIFFOpen function. A crafted input will lead to a denial of service attack and can either make the system hand or trigger the OOM killer. CVE-2018-5784 There is an uncontrolled resource consumption in TIFFSetDirectory function of src/libtiff/tif_dir.c, which can cause denial of service through a crafted tif file. For Debian 7 last seen 2020-03-17 modified 2018-06-05 plugin id 110313 published 2018-06-05 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/110313 title Debian DLA-1391-1 : tiff security update NASL family Debian Local Security Checks NASL id DEBIAN_DLA-1411.NASL description Several issues were discovered in TIFF, the Tag Image File Format library, that allowed remote attackers to cause a denial of service or other unspecified impact via a crafted image file. CVE-2017-11613: DoS vulnerability A crafted input will lead to a denial of service attack. During the TIFFOpen process, td_imagelength is not checked. The value of td_imagelength can be directly controlled by an input file. In the ChopUpSingleUncompressedStrip function, the _TIFFCheckMalloc function is called based on td_imagelength. If the value of td_imagelength is set close to the amount of system memory, it will hang the system or trigger the OOM killer. CVE-2018-10963: DoS vulnerability The TIFFWriteDirectorySec() function in tif_dirwrite.c in LibTIFF allows remote attackers to cause a denial of service (assertion failure and application crash) via a crafted file, a different vulnerability than CVE-2017-13726. CVE-2018-5784: DoS vulnerability In LibTIFF, there is an uncontrolled resource consumption in the TIFFSetDirectory function of tif_dir.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted tif file. This occurs because the declared number of directory entries is not validated against the actual number of directory entries. CVE-2018-7456: NULL pointer Dereference A NULL pointer Dereference occurs in the function TIFFPrintDirectory in tif_print.c in LibTIFF when using the tiffinfo tool to print crafted TIFF information, a different vulnerability than CVE-2017-18013. (This affects an earlier part of the TIFFPrintDirectory function that was not addressed by the CVE-2017-18013 patch.) CVE-2018-8905: Heap-based buffer overflow In LibTIFF, a heap-based buffer overflow occurs in the function LZWDecodeCompat in tif_lzw.c via a crafted TIFF file, as demonstrated by tiff2ps. For Debian 8 last seen 2020-06-01 modified 2020-06-02 plugin id 110840 published 2018-07-03 reporter This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/110840 title Debian DLA-1411-1 : tiff security update
References
- http://bugzilla.maptools.org/show_bug.cgi?id=2772
- https://gitlab.com/libtiff/libtiff/commit/473851d211cf8805a161820337ca74cc9615d6ef
- https://lists.debian.org/debian-lts-announce/2018/05/msg00022.html
- https://lists.debian.org/debian-lts-announce/2018/07/msg00002.html
- https://usn.ubuntu.com/3602-1/
- https://usn.ubuntu.com/3606-1/
- https://www.debian.org/security/2018/dsa-4349