Vulnerabilities > CVE-2017-11574 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Fontforge 20161012
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
PARTIAL Availability impact
PARTIAL Summary
FontForge 20161012 is vulnerable to a heap-based buffer overflow in readcffset (parsettf.c) resulting in DoS or code execution via a crafted otf file.
Vulnerable Configurations
Part | Description | Count |
---|---|---|
Application | 1 |
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 Ubuntu Local Security Checks NASL id UBUNTU_USN-3409-1.NASL description It was discovered that FontForge was vulnerable to a heap-based buffer over-read. A remote attacker could use a crafted file to DoS or execute arbitrary code. (CVE-2017-11568, CVE-2017-11569, CVE-2017-11572) It was discovered that FontForge was vulnerable to a stack-based buffer overflow. A remote attacker could use a crafted file to DoS or execute arbitrary code. (CVE-2017-11571) It was discovered that FontForge was vulnerable to a heap-based buffer overflow. A remote attacker could use a crafted file to DoS or execute arbitrary code. (CVE-2017-11574) It was discovered that FontForge was vulnerable to a buffer over-read. A remote attacker could use a crafted file to DoS or execute arbitrary code. (CVE-2017-11575, CVE-2017-11577) It was discovered that FontForge wasn last seen 2020-06-01 modified 2020-06-02 plugin id 102957 published 2017-09-05 reporter Ubuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102957 title Ubuntu 14.04 LTS : fontforge vulnerabilities (USN-3409-1) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Ubuntu Security Notice USN-3409-1. The text # itself is copyright (C) Canonical, Inc. See # <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered # trademark of Canonical, Inc. # include("compat.inc"); if (description) { script_id(102957); script_version("3.6"); script_cvs_date("Date: 2019/09/18 12:31:47"); script_cve_id("CVE-2017-11568", "CVE-2017-11569", "CVE-2017-11571", "CVE-2017-11572", "CVE-2017-11574", "CVE-2017-11575", "CVE-2017-11576", "CVE-2017-11577"); script_xref(name:"USN", value:"3409-1"); script_name(english:"Ubuntu 14.04 LTS : fontforge vulnerabilities (USN-3409-1)"); script_summary(english:"Checks dpkg output for updated packages."); script_set_attribute( attribute:"synopsis", value: "The remote Ubuntu host is missing one or more security-related patches." ); script_set_attribute( attribute:"description", value: "It was discovered that FontForge was vulnerable to a heap-based buffer over-read. A remote attacker could use a crafted file to DoS or execute arbitrary code. (CVE-2017-11568, CVE-2017-11569, CVE-2017-11572) It was discovered that FontForge was vulnerable to a stack-based buffer overflow. A remote attacker could use a crafted file to DoS or execute arbitrary code. (CVE-2017-11571) It was discovered that FontForge was vulnerable to a heap-based buffer overflow. A remote attacker could use a crafted file to DoS or execute arbitrary code. (CVE-2017-11574) It was discovered that FontForge was vulnerable to a buffer over-read. A remote attacker could use a crafted file to DoS or execute arbitrary code. (CVE-2017-11575, CVE-2017-11577) It was discovered that FontForge wasn't correctly checking the sign of a vector size. A remote attacker could use a crafted file to DoS. (CVE-2017-11576). 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." ); script_set_attribute( attribute:"see_also", value:"https://usn.ubuntu.com/3409-1/" ); script_set_attribute( attribute:"solution", value:"Update the affected fontforge and / or fontforge-common packages." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:fontforge"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:fontforge-common"); script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04"); script_set_attribute(attribute:"vuln_publication_date", value:"2017/07/23"); script_set_attribute(attribute:"patch_publication_date", value:"2017/09/04"); script_set_attribute(attribute:"plugin_publication_date", value:"2017/09/05"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"Ubuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Ubuntu Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l"); exit(0); } include("audit.inc"); include("ubuntu.inc"); include("misc_func.inc"); if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/Ubuntu/release"); if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu"); release = chomp(release); if (! preg(pattern:"^(14\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 14.04", "Ubuntu " + release); if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu); flag = 0; if (ubuntu_check(osver:"14.04", pkgname:"fontforge", pkgver:"20120731.b-5ubuntu0.1")) flag++; if (ubuntu_check(osver:"14.04", pkgname:"fontforge-common", pkgver:"20120731.b-5ubuntu0.1")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : ubuntu_report_get() ); exit(0); } else { tested = ubuntu_pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "fontforge / fontforge-common"); }
NASL family Debian Local Security Checks NASL id DEBIAN_DLA-1065.NASL description FontForge is vulnerable to heap-based buffer over-read in several functions, resulting in DoS or code execution via a crafted otf file : For Debian 7 last seen 2020-03-17 modified 2017-08-28 plugin id 102785 published 2017-08-28 reporter This script is Copyright (C) 2017-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/102785 title Debian DLA-1065-1 : fontforge security update code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Debian Security Advisory DLA-1065-1. The text # itself is copyright (C) Software in the Public Interest, Inc. # include("compat.inc"); if (description) { script_id(102785); script_version("3.4"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12"); script_cve_id("CVE-2017-11568", "CVE-2017-11569", "CVE-2017-11571", "CVE-2017-11572", "CVE-2017-11574", "CVE-2017-11575", "CVE-2017-11576", "CVE-2017-11577"); script_name(english:"Debian DLA-1065-1 : fontforge security update"); script_summary(english:"Checks dpkg output for the updated packages."); script_set_attribute( attribute:"synopsis", value:"The remote Debian host is missing a security update." ); script_set_attribute( attribute:"description", value: "FontForge is vulnerable to heap-based buffer over-read in several functions, resulting in DoS or code execution via a crafted otf file : For Debian 7 'Wheezy', these problems have been fixed in version 0.0.20120101+git-2+deb7u1. We recommend that you upgrade your fontforge 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." ); script_set_attribute( attribute:"see_also", value:"https://lists.debian.org/debian-lts-announce/2017/08/msg00017.html" ); script_set_attribute( attribute:"see_also", value:"https://packages.debian.org/source/wheezy/fontforge" ); script_set_attribute(attribute:"solution", value:"Upgrade the affected packages."); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:fontforge"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:fontforge-dbg"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:fontforge-nox"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libfontforge-dev"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libfontforge1"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgdraw4"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-fontforge"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0"); script_set_attribute(attribute:"patch_publication_date", value:"2017/08/26"); script_set_attribute(attribute:"plugin_publication_date", value:"2017/08/28"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2017-2020 Tenable Network Security, Inc."); script_family(english:"Debian Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l"); exit(0); } include("audit.inc"); include("debian_package.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian"); if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (deb_check(release:"7.0", prefix:"fontforge", reference:"0.0.20120101+git-2+deb7u1")) flag++; if (deb_check(release:"7.0", prefix:"fontforge-dbg", reference:"0.0.20120101+git-2+deb7u1")) flag++; if (deb_check(release:"7.0", prefix:"fontforge-nox", reference:"0.0.20120101+git-2+deb7u1")) flag++; if (deb_check(release:"7.0", prefix:"libfontforge-dev", reference:"0.0.20120101+git-2+deb7u1")) flag++; if (deb_check(release:"7.0", prefix:"libfontforge1", reference:"0.0.20120101+git-2+deb7u1")) flag++; if (deb_check(release:"7.0", prefix:"libgdraw4", reference:"0.0.20120101+git-2+deb7u1")) flag++; if (deb_check(release:"7.0", prefix:"python-fontforge", reference:"0.0.20120101+git-2+deb7u1")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get()); else security_warning(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");
NASL family Debian Local Security Checks NASL id DEBIAN_DSA-3958.NASL description It was discovered that FontForge, a font editor, did not correctly validate its input. An attacker could use this flaw by tricking a user into opening a maliciously crafted OpenType font file, thus causing a denial-of-service via application crash, or execution of arbitrary code. last seen 2020-06-01 modified 2020-06-02 plugin id 102825 published 2017-08-30 reporter This script is Copyright (C) 2017-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102825 title Debian DSA-3958-1 : fontforge - security update code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Debian Security Advisory DSA-3958. The text # itself is copyright (C) Software in the Public Interest, Inc. # include("compat.inc"); if (description) { script_id(102825); script_version("3.3"); script_cvs_date("Date: 2018/11/10 11:49:38"); script_cve_id("CVE-2017-11568", "CVE-2017-11569", "CVE-2017-11571", "CVE-2017-11572", "CVE-2017-11574", "CVE-2017-11575", "CVE-2017-11576", "CVE-2017-11577"); script_xref(name:"DSA", value:"3958"); script_name(english:"Debian DSA-3958-1 : fontforge - security update"); script_summary(english:"Checks dpkg output for the updated package"); script_set_attribute( attribute:"synopsis", value:"The remote Debian host is missing a security-related update." ); script_set_attribute( attribute:"description", value: "It was discovered that FontForge, a font editor, did not correctly validate its input. An attacker could use this flaw by tricking a user into opening a maliciously crafted OpenType font file, thus causing a denial-of-service via application crash, or execution of arbitrary code." ); script_set_attribute( attribute:"see_also", value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=869614" ); script_set_attribute( attribute:"see_also", value:"https://packages.debian.org/source/jessie/fontforge" ); script_set_attribute( attribute:"see_also", value:"https://packages.debian.org/source/stretch/fontforge" ); script_set_attribute( attribute:"see_also", value:"https://www.debian.org/security/2017/dsa-3958" ); script_set_attribute( attribute:"solution", value: "Upgrade the fontforge packages. For the oldstable distribution (jessie), these problems have been fixed in version 20120731.b-5+deb8u1. For the stable distribution (stretch), these problems have been fixed in version 1:20161005~dfsg-4+deb9u1." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P"); script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:fontforge"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0"); script_set_attribute(attribute:"patch_publication_date", value:"2017/08/29"); script_set_attribute(attribute:"plugin_publication_date", value:"2017/08/30"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2017-2018 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Debian Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l"); exit(0); } include("audit.inc"); include("debian_package.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian"); if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (deb_check(release:"8.0", prefix:"fontforge", reference:"20120731.b-5+deb8u1")) flag++; if (deb_check(release:"8.0", prefix:"fontforge-common", reference:"20120731.b-5+deb8u1")) flag++; if (deb_check(release:"8.0", prefix:"fontforge-dbg", reference:"20120731.b-5+deb8u1")) flag++; if (deb_check(release:"8.0", prefix:"fontforge-nox", reference:"20120731.b-5+deb8u1")) flag++; if (deb_check(release:"8.0", prefix:"libfontforge-dev", reference:"20120731.b-5+deb8u1")) flag++; if (deb_check(release:"8.0", prefix:"libfontforge1", reference:"20120731.b-5+deb8u1")) flag++; if (deb_check(release:"8.0", prefix:"libgdraw4", reference:"20120731.b-5+deb8u1")) flag++; if (deb_check(release:"8.0", prefix:"python-fontforge", reference:"20120731.b-5+deb8u1")) flag++; if (deb_check(release:"9.0", prefix:"fontforge", reference:"1:20161005~dfsg-4+deb9u1")) flag++; if (deb_check(release:"9.0", prefix:"fontforge-common", reference:"1:20161005~dfsg-4+deb9u1")) flag++; if (deb_check(release:"9.0", prefix:"fontforge-dbg", reference:"1:20161005~dfsg-4+deb9u1")) flag++; if (deb_check(release:"9.0", prefix:"fontforge-nox", reference:"1:20161005~dfsg-4+deb9u1")) flag++; if (deb_check(release:"9.0", prefix:"libfontforge-dev", reference:"1:20161005~dfsg-4+deb9u1")) flag++; if (deb_check(release:"9.0", prefix:"libfontforge2", reference:"1:20161005~dfsg-4+deb9u1")) flag++; if (deb_check(release:"9.0", prefix:"libgdraw5", reference:"1:20161005~dfsg-4+deb9u1")) flag++; if (deb_check(release:"9.0", prefix:"python-fontforge", reference:"1:20161005~dfsg-4+deb9u1")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get()); else security_warning(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");