Vulnerabilities > CVE-2016-2050 - Out-of-bounds Write vulnerability in Libdwarf Project Libdwarf 20151114
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
PARTIAL Summary
The get_abbrev_array_info function in libdwarf-20151114 allows remote attackers to cause a denial of service (out-of-bounds write) via a crafted elf file.
Vulnerable Configurations
Part | Description | Count |
---|---|---|
Application | 1 |
Common Weakness Enumeration (CWE)
Nessus
NASL family Fedora Local Security Checks NASL id FEDORA_2016-F36C5935E5.NASL description Update to 20160507 release - fixes many outstanding crash bugs 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 2016-07-14 plugin id 92205 published 2016-07-14 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/92205 title Fedora 24 : libdwarf (2016-f36c5935e5) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Fedora Security Advisory FEDORA-2016-f36c5935e5. # include("compat.inc"); if (description) { script_id(92205); script_version("1.6"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04"); script_cve_id("CVE-2016-2050", "CVE-2016-2091"); script_xref(name:"FEDORA", value:"2016-f36c5935e5"); script_name(english:"Fedora 24 : libdwarf (2016-f36c5935e5)"); script_summary(english:"Checks rpm output for the updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Fedora host is missing a security update." ); script_set_attribute( attribute:"description", value: "Update to 20160507 release - fixes many outstanding crash bugs 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." ); script_set_attribute( attribute:"see_also", value:"https://bodhi.fedoraproject.org/updates/FEDORA-2016-f36c5935e5" ); script_set_attribute( attribute:"solution", value:"Update the affected libdwarf package." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P"); script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:libdwarf"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:24"); script_set_attribute(attribute:"vuln_publication_date", value:"2016/02/08"); script_set_attribute(attribute:"patch_publication_date", value:"2016/05/12"); script_set_attribute(attribute:"plugin_publication_date", value:"2016/07/14"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Fedora Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/RedHat/release"); if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora"); os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora"); os_ver = os_ver[1]; if (! preg(pattern:"^24([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 24", "Fedora " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC24", reference:"libdwarf-20160507-1.fc24")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : rpm_report_get() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libdwarf"); }
NASL family Debian Local Security Checks NASL id DEBIAN_DLA-669.NASL description Several vulnerabilities were discovered in dwarfutils, a tool and library for reading/consuming and writing/producing DWARF debugging information. The Common Vulnerabilities and Exposures project identifies the following issues : CVE-2015-8538 A specially crafted ELF file can cause a segmentation fault. CVE-2015-8750 A specially crafted ELF file can cause a NULL pointer dereference. CVE-2016-2050 Out-of-bounds write CVE-2016-2091 Out-of-bounds read CVE-2016-5034 Out-of-bounds write CVE-2016-5036 Out-of-bounds read CVE-2016-5038 Out-of-bounds read CVE-2016-5039 Out-of-bounds read CVE-2016-5042 A specially crafted DWARF section can cause an infinite loop, reading from increasing memory addresses until the application crashes. For Debian 7 last seen 2020-03-17 modified 2016-10-20 plugin id 94143 published 2016-10-20 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/94143 title Debian DLA-669-1 : dwarfutils 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-669-1. The text # itself is copyright (C) Software in the Public Interest, Inc. # include("compat.inc"); if (description) { script_id(94143); script_version("2.7"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12"); script_cve_id("CVE-2015-8538", "CVE-2015-8750", "CVE-2016-2050", "CVE-2016-2091", "CVE-2016-5034", "CVE-2016-5036", "CVE-2016-5038", "CVE-2016-5039", "CVE-2016-5042"); script_name(english:"Debian DLA-669-1 : dwarfutils 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: "Several vulnerabilities were discovered in dwarfutils, a tool and library for reading/consuming and writing/producing DWARF debugging information. The Common Vulnerabilities and Exposures project identifies the following issues : CVE-2015-8538 A specially crafted ELF file can cause a segmentation fault. CVE-2015-8750 A specially crafted ELF file can cause a NULL pointer dereference. CVE-2016-2050 Out-of-bounds write CVE-2016-2091 Out-of-bounds read CVE-2016-5034 Out-of-bounds write CVE-2016-5036 Out-of-bounds read CVE-2016-5038 Out-of-bounds read CVE-2016-5039 Out-of-bounds read CVE-2016-5042 A specially crafted DWARF section can cause an infinite loop, reading from increasing memory addresses until the application crashes. For Debian 7 'Wheezy', these problems have been fixed in version 20120410-2+deb7u2. We recommend that you upgrade your dwarfutils 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/2016/10/msg00024.html" ); script_set_attribute( attribute:"see_also", value:"https://packages.debian.org/source/wheezy/dwarfutils" ); script_set_attribute( attribute:"solution", value:"Upgrade the affected dwarfdump, and libdwarf-dev packages." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:dwarfdump"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libdwarf-dev"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0"); script_set_attribute(attribute:"patch_publication_date", value:"2016/10/19"); script_set_attribute(attribute:"plugin_publication_date", value:"2016/10/20"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2016-2020 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:"7.0", prefix:"dwarfdump", reference:"20120410-2+deb7u2")) flag++; if (deb_check(release:"7.0", prefix:"libdwarf-dev", reference:"20120410-2+deb7u2")) 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");