Vulnerabilities > CVE-2018-10195 - Integer Overflow or Wraparound vulnerability in multiple products

047910
CVSS 7.1 - HIGH
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
LOW
Confidentiality impact
HIGH
Integrity impact
NONE
Availability impact
HIGH
local
low complexity
lrzsz-project
suse
debian
CWE-190
nessus
NVD
Published: 2021-06-02
Updated: 2024-11-21

Summary

lrzsz before version 0.12.21~rc can leak information to the receiving side due to an incorrect length check in the function zsdata that causes a size_t to wrap around.

Vulnerable Configurations

Part Description Count
Application
Lrzsz_Project
13
Application
Suse
1
OS
Suse
3
OS
Debian
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Forced Integer Overflow
    This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.

Nessus

  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2018-1066-1.NASL
    descriptionThis update for rzsz fixes the following issues : - Update to 0.12.21~rc to fix bsc#1086416 and bsc#1090051 - CVE-2018-10195: segmentation fault in zsdata function could lead to denial of service (bsc#1090051) 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 seen2020-06-01
    modified2020-06-02
    plugin id109341
    published2018-04-25
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/109341
    titleSUSE SLED12 / SLES12 Security Update : rzsz (SUSE-SU-2018:1066-1)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2018:1066-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(109341);
  script_version("1.3");
  script_cvs_date("Date: 2019/09/10 13:51:47");

  script_cve_id("CVE-2018-10195");

  script_name(english:"SUSE SLED12 / SLES12 Security Update : rzsz (SUSE-SU-2018:1066-1)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for rzsz fixes the following issues :

  - Update to 0.12.21~rc to fix bsc#1086416 and bsc#1090051

  - CVE-2018-10195: segmentation fault in zsdata function
    could lead to denial of service (bsc#1090051)

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."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1076576"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1086416"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1090051"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-10195/"
  );
  # https://www.suse.com/support/update/announcement/2018/suse-su-20181066-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?b5a40477"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use the SUSE recommended
installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server 12-SP3:zypper in -t patch
SUSE-SLE-SERVER-12-SP3-2018-728=1

SUSE Linux Enterprise Desktop 12-SP3:zypper in -t patch
SUSE-SLE-DESKTOP-12-SP3-2018-728=1"
  );
  script_set_attribute(attribute:"risk_factor", value:"High");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:rzsz");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:rzsz-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:rzsz-debugsource");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/04/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/04/25");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED12|SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED12 / SLES12", "SUSE " + os_ver);

if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(3)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP3", os_ver + " SP" + sp);
if (os_ver == "SLED12" && (! preg(pattern:"^(3)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP3", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"3", reference:"rzsz-0.12.21~rc-1001.3.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"rzsz-debuginfo-0.12.21~rc-1001.3.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"rzsz-debugsource-0.12.21~rc-1001.3.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"rzsz-0.12.21~rc-1001.3.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"rzsz-debuginfo-0.12.21~rc-1001.3.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"rzsz-debugsource-0.12.21~rc-1001.3.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "rzsz");
}
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2018-1070-1.NASL
    descriptionThis update for rzsz fixes the following issues : - L3: sz of rzsz segfaults in zsdata() (bsc#1086416) - VUL-0: CVE-2018-10195: rzsz: sz can leak data to receiving side (bsc#1090051) - rzsz-0.12.20-976.7: illegal use of freed variable (bsc#529899) - /usr/bin/lsb segfaults [rzsz] (bsc#1076576) 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 seen2020-06-01
    modified2020-06-02
    plugin id109342
    published2018-04-25
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/109342
    titleSUSE SLES11 Security Update : rzsz (SUSE-SU-2018:1070-1)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2018:1070-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(109342);
  script_version("1.3");
  script_cvs_date("Date: 2019/09/10 13:51:47");

  script_cve_id("CVE-2018-10195");

  script_name(english:"SUSE SLES11 Security Update : rzsz (SUSE-SU-2018:1070-1)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for rzsz fixes the following issues :

  - L3: sz of rzsz segfaults in zsdata() (bsc#1086416)

  - VUL-0: CVE-2018-10195: rzsz: sz can leak data to
    receiving side (bsc#1090051)

  - rzsz-0.12.20-976.7: illegal use of freed variable
    (bsc#529899)

  - /usr/bin/lsb segfaults [rzsz] (bsc#1076576)

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."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1076576"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1086416"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1090051"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=529899"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-10195/"
  );
  # https://www.suse.com/support/update/announcement/2018/suse-su-20181070-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?9f0a0a6b"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use the SUSE recommended
installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server 11-SP4:zypper in -t patch
slessp4-rzsz-13570=1

SUSE Linux Enterprise Debuginfo 11-SP4:zypper in -t patch
dbgsp4-rzsz-13570=1"
  );
  script_set_attribute(attribute:"risk_factor", value:"High");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:rzsz");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:rzsz-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:rzsz-debugsource");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:11");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/04/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/04/25");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES11)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES11", "SUSE " + os_ver);

if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES11" && (! preg(pattern:"^(4)$", string:sp))) audit(AUDIT_OS_NOT, "SLES11 SP4", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES11", sp:"4", reference:"rzsz-0.12.21~rc-936.3.1")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"rzsz-debuginfo-0.12.21~rc-936.3.1")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"rzsz-debugsource-0.12.21~rc-936.3.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "rzsz");
}

References