Vulnerabilities > CVE-2020-12863 - Out-of-bounds Read vulnerability in multiple products
Attack vector
ADJACENT_NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
LOW Integrity impact
NONE Availability impact
NONE Summary
An out-of-bounds read in SANE Backends before 1.0.30 may allow a malicious device connected to the same local network as the victim to read important information, such as the ASLR offsets of the program, aka GHSL-2020-083.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Overread Buffers An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.
Nessus
NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_284813497E204F80AE1EE6BF48D4F17C.NASL description The Sane Project reports : epson2: fixes CVE-2020-12867 (GHSL-2020-075) and several memory management issues found while addressing that CVE epsonds: addresses out-of-bound memory access issues to fix CVE-2020-12862 (GHSL-2020-082) and CVE-2020-12863 (GHSL-2020-083), addresses a buffer overflow fixing CVE-2020-12865 (GHSL-2020-084) and disables network autodiscovery to mitigate CVE-2020-12866 (GHSL-2020-079), CVE-2020-12861 (GHSL-2020-080) and CVE-2020-12864 (GHSL-2020-081). Note that this backend does not support network scanners to begin with. magicolor: fixes a floating point exception and uninitialized data read fixes an overflow in sanei_tcp_read() last seen 2020-06-06 modified 2020-05-29 plugin id 136955 published 2020-05-29 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/136955 title FreeBSD : Sane -- Multiple Vulnerabilities (28481349-7e20-4f80-ae1e-e6bf48d4f17c) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from the FreeBSD VuXML database : # # Copyright 2003-2020 Jacques Vidrine and contributors # # Redistribution and use in source (VuXML) and 'compiled' forms (SGML, # HTML, PDF, PostScript, RTF and so forth) with or without modification, # are permitted provided that the following conditions are met: # 1. Redistributions of source code (VuXML) must retain the above # copyright notice, this list of conditions and the following # disclaimer as the first lines of this file unmodified. # 2. Redistributions in compiled form (transformed to other DTDs, # published online in any format, converted to PDF, PostScript, # RTF and other formats) must reproduce the above copyright # notice, this list of conditions and the following disclaimer # in the documentation and/or other materials provided with the # distribution. # # THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, # OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT # OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR # BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE # OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION, # EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # include("compat.inc"); if (description) { script_id(136955); script_version("1.4"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/07/10"); script_cve_id("CVE-2020-12861", "CVE-2020-12862", "CVE-2020-12863", "CVE-2020-12864", "CVE-2020-12865", "CVE-2020-12866", "CVE-2020-12867"); script_name(english:"FreeBSD : Sane -- Multiple Vulnerabilities (28481349-7e20-4f80-ae1e-e6bf48d4f17c)"); script_summary(english:"Checks for updated package in pkg_info output"); script_set_attribute( attribute:"synopsis", value:"The remote FreeBSD host is missing a security-related update." ); script_set_attribute( attribute:"description", value: "The Sane Project reports : epson2: fixes CVE-2020-12867 (GHSL-2020-075) and several memory management issues found while addressing that CVE epsonds: addresses out-of-bound memory access issues to fix CVE-2020-12862 (GHSL-2020-082) and CVE-2020-12863 (GHSL-2020-083), addresses a buffer overflow fixing CVE-2020-12865 (GHSL-2020-084) and disables network autodiscovery to mitigate CVE-2020-12866 (GHSL-2020-079), CVE-2020-12861 (GHSL-2020-080) and CVE-2020-12864 (GHSL-2020-081). Note that this backend does not support network scanners to begin with. magicolor: fixes a floating point exception and uninitialized data read fixes an overflow in sanei_tcp_read()" ); script_set_attribute( attribute:"see_also", value:"https://gitlab.com/sane-project/backends/-/releases/1.0.30" ); # https://vuxml.freebsd.org/freebsd/28481349-7e20-4f80-ae1e-e6bf48d4f17c.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?1e0f7390" ); script_set_attribute(attribute:"solution", value:"Update the affected package."); script_set_cvss_base_vector("CVSS2#AV:A/AC:M/Au:N/C:C/I:C/A:C"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:L/PR:N/UI:N/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:"cvss_score_source", value:"CVE-2020-12861"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:sane-backends"); script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd"); script_set_attribute(attribute:"vuln_publication_date", value:"2020/05/17"); script_set_attribute(attribute:"patch_publication_date", value:"2020/05/28"); script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/29"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"FreeBSD Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info"); exit(0); } include("audit.inc"); include("freebsd_package.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD"); if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (pkg_test(save_report:TRUE, pkg:"sane-backends<1.0.30")) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get()); else security_hole(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");
NASL family Slackware Local Security Checks NASL id SLACKWARE_SSA_2020-139-01.NASL description New sane packages are available for Slackware 14.0, 14.1, 14.2, and -current to fix security issues. last seen 2020-06-06 modified 2020-05-19 plugin id 136707 published 2020-05-19 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/136707 title Slackware 14.0 / 14.1 / 14.2 / current : sane (SSA:2020-139-01) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Slackware Security Advisory 2020-139-01. The text # itself is copyright (C) Slackware Linux, Inc. # include("compat.inc"); if (description) { script_id(136707); script_version("1.4"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/07/10"); script_cve_id("CVE-2020-12861", "CVE-2020-12862", "CVE-2020-12863", "CVE-2020-12864", "CVE-2020-12865", "CVE-2020-12866", "CVE-2020-12867"); script_xref(name:"SSA", value:"2020-139-01"); script_name(english:"Slackware 14.0 / 14.1 / 14.2 / current : sane (SSA:2020-139-01)"); script_summary(english:"Checks for updated package in /var/log/packages"); script_set_attribute( attribute:"synopsis", value:"The remote Slackware host is missing a security update." ); script_set_attribute( attribute:"description", value: "New sane packages are available for Slackware 14.0, 14.1, 14.2, and -current to fix security issues." ); # http://www.slackware.com/security/viewer.php?l=slackware-security&y=2020&m=slackware-security.442630 script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?22c1c8a9" ); script_set_attribute(attribute:"solution", value:"Update the affected sane package."); script_set_cvss_base_vector("CVSS2#AV:A/AC:M/Au:N/C:C/I:C/A:C"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:L/PR:N/UI:N/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:"cvss_score_source", value:"CVE-2020-12861"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:slackware:slackware_linux:sane"); script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux"); script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.0"); script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.1"); script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.2"); script_set_attribute(attribute:"vuln_publication_date", value:"2020/06/01"); script_set_attribute(attribute:"patch_publication_date", value:"2020/05/18"); script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/19"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Slackware Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Slackware/release", "Host/Slackware/packages"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("slackware.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Slackware/release")) audit(AUDIT_OS_NOT, "Slackware"); if (!get_kb_item("Host/Slackware/packages")) 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, "Slackware", cpu); flag = 0; if (slackware_check(osver:"14.0", pkgname:"sane", pkgver:"1.0.30", pkgarch:"i486", pkgnum:"1_slack14.0")) flag++; if (slackware_check(osver:"14.0", arch:"x86_64", pkgname:"sane", pkgver:"1.0.30", pkgarch:"x86_64", pkgnum:"1_slack14.0")) flag++; if (slackware_check(osver:"14.1", pkgname:"sane", pkgver:"1.0.30", pkgarch:"i486", pkgnum:"1_slack14.1")) flag++; if (slackware_check(osver:"14.1", arch:"x86_64", pkgname:"sane", pkgver:"1.0.30", pkgarch:"x86_64", pkgnum:"1_slack14.1")) flag++; if (slackware_check(osver:"14.2", pkgname:"sane", pkgver:"1.0.30", pkgarch:"i586", pkgnum:"1_slack14.2")) flag++; if (slackware_check(osver:"14.2", arch:"x86_64", pkgname:"sane", pkgver:"1.0.30", pkgarch:"x86_64", pkgnum:"1_slack14.2")) flag++; if (slackware_check(osver:"current", pkgname:"sane", pkgver:"1.0.30", pkgarch:"i586", pkgnum:"1")) flag++; if (slackware_check(osver:"current", arch:"x86_64", pkgname:"sane", pkgver:"1.0.30", pkgarch:"x86_64", pkgnum:"1")) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:slackware_report_get()); else security_hole(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");
References
- https://securitylab.github.com/advisories/GHSL-2020-075-libsane
- https://alioth-lists.debian.net/pipermail/sane-announce/2020/000041.html
- https://lists.debian.org/debian-lts-announce/2020/08/msg00029.html
- https://usn.ubuntu.com/4470-1/
- https://lists.debian.org/debian-lts-announce/2020/10/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00079.html