Vulnerabilities > CVE-2014-9662 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
PARTIAL Availability impact
PARTIAL Summary
cff/cf2ft.c in FreeType before 2.5.4 does not validate the return values of point-allocation functions, which allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted OTF font.
Vulnerable Configurations
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 Gentoo Local Security Checks NASL id GENTOO_GLSA-201503-05.NASL description The remote host is affected by the vulnerability described in GLSA-201503-05 (FreeType: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in FreeType. Please review the CVE identifiers referenced below for details. Impact : A remote attacker can cause Denial of Service. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 81690 published 2015-03-09 reporter This script is Copyright (C) 2015 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/81690 title GLSA-201503-05 : FreeType: Multiple vulnerabilities NASL family Fedora Local Security Checks NASL id FEDORA_2015-2216.NASL description This update fixes several security issues. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2015-02-23 plugin id 81429 published 2015-02-23 reporter This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/81429 title Fedora 20 : freetype-2.5.0-9.fc20 (2015-2216) NASL family SuSE Local Security Checks NASL id SUSE_11_FREETYPE2-201503-150302.NASL description The font rendering library freetype2 has been updated to fix various security issues. last seen 2020-06-01 modified 2020-06-02 plugin id 81752 published 2015-03-11 reporter This script is Copyright (C) 2015 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/81752 title SuSE 11.3 Security Update : freetype2 (SAT Patch Number 10386) NASL family Fedora Local Security Checks NASL id FEDORA_2015-2237.NASL description This update fixes several security issues. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2015-02-20 plugin id 81415 published 2015-02-20 reporter This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/81415 title Fedora 21 : freetype-2.5.3-15.fc21 (2015-2237) NASL family Mandriva Local Security Checks NASL id MANDRIVA_MDVSA-2015-089.NASL description Updated freetype2 packages fix security vulnerabilities : It was reported that Freetype before 2.5.3 suffers from an out-of-bounds stack-based read/write flaw in cf2_hintmap_build() in the CFF rasterizing code, which could lead to a buffer overflow (CVE-2014-2240). It was also reported that Freetype before 2.5.3 has a denial-of-service vulnerability in the CFF rasterizing code, due to a reachable assertion (CVE-2014-2241). It was reported that Freetype before 2.5.4 suffers from an out-of-bounds stack-based read/write flaw in cf2_hintmap_build() in the CFF rasterizing code, which could lead to a buffer overflow. This is due to an incomplete fix for CVE-2014-2240. The tt_sbit_decoder_load_image function in sfnt/ttsbit.c in FreeType before 2.5.4 does not properly check for an integer overflow, which allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via a crafted OpenType font (CVE-2014-9656). The tt_face_load_hdmx function in truetype/ttpload.c in FreeType before 2.5.4 does not establish a minimum record size, which allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via a crafted TrueType font (CVE-2014-9657). The tt_face_load_kern function in sfnt/ttkern.c in FreeType before 2.5.4enforces an incorrect minimum table length, which allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via a crafted TrueType font (CVE-2014-9658). The _bdf_parse_glyphs function in bdf/bdflib.c in FreeType before 2.5.4 does not properly handle a missing ENDCHAR record, which allows remote attackers to cause a denial of service (NULL pointer dereference) or possibly have unspecified other impact via a crafted BDF font (CVE-2014-9660). type42/t42parse.c in FreeType before 2.5.4 does not consider that scanning can be incomplete without triggering an error, which allows remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact via a crafted Type42 font (CVE-2014-9661). cff/cf2ft.c in FreeType before 2.5.4 does not validate the return values of point-allocation functions, which allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted OTF font (CVE-2014-9662). The tt_cmap4_validate function in sfnt/ttcmap.c in FreeType before 2.5.4 validates a certain length field before that field last seen 2020-06-01 modified 2020-06-02 plugin id 82342 published 2015-03-30 reporter This script is Copyright (C) 2015-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/82342 title Mandriva Linux Security Advisory : freetype2 (MDVSA-2015:089) NASL family SuSE Local Security Checks NASL id OPENSUSE-2015-274.NASL description freetype2 was updated to fix various vulnerabilities that could lead to crashes or potentially code execution when parsing fonts. last seen 2020-06-05 modified 2015-03-31 plugin id 82461 published 2015-03-31 reporter This script is Copyright (C) 2015-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/82461 title openSUSE Security Update : freetype2 (openSUSE-2015-274) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-2510-1.NASL description Mateusz Jurczyk discovered that FreeType did not correctly handle certain malformed font files. If a user were tricked into using a specially crafted font file, a remote attacker could cause FreeType to crash 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 81509 published 2015-02-25 reporter Ubuntu Security Notice (C) 2015-2019 Canonical, Inc. / NASL script (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/81509 title Ubuntu 10.04 LTS / 12.04 LTS / 14.04 LTS / 14.10 : freetype vulnerabilities (USN-2510-1)
References
- http://advisories.mageia.org/MGASA-2015-0083.html
- http://code.google.com/p/google-security-research/issues/detail?id=185
- http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=5f201ab5c24cb69bc96b724fd66e739928d6c5e2
- http://lists.fedoraproject.org/pipermail/package-announce/2015-February/150148.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-February/150162.html
- http://lists.opensuse.org/opensuse-updates/2015-03/msg00091.html
- http://www.securityfocus.com/bid/72986
- http://www.ubuntu.com/usn/USN-2510-1
- http://www.ubuntu.com/usn/USN-2739-1
- https://security.gentoo.org/glsa/201503-05