CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
Percentile
83.0%
Multiple vulnerabilities have been discovered in OpenSSL, a Secure Sockets Layer toolkit. The Common Vulnerabilities and Exposures project identifies the following issues :
CVE-2017-3738 David Benjamin of Google reported an overflow bug in the AVX2 Montgomery multiplication procedure used in exponentiation with 1024-bit moduli.
CVE-2018-0739 It was discovered that constructed ASN.1 types with a recursive definition could exceed the stack, potentially leading to a denial of service.
Details can be found in the upstream advisory:
https://www.openssl.org/news/secadv/20180327.txt
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DSA-4157. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include("compat.inc");
if (description)
{
script_id(108730);
script_version("1.6");
script_cvs_date("Date: 2018/11/13 12:30:46");
script_cve_id("CVE-2017-3738", "CVE-2018-0739");
script_xref(name:"DSA", value:"4157");
script_name(english:"Debian DSA-4157-1 : openssl - 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:
"Multiple vulnerabilities have been discovered in OpenSSL, a Secure
Sockets Layer toolkit. The Common Vulnerabilities and Exposures
project identifies the following issues :
- CVE-2017-3738
David Benjamin of Google reported an overflow bug in the
AVX2 Montgomery multiplication procedure used in
exponentiation with 1024-bit moduli.
- CVE-2018-0739
It was discovered that constructed ASN.1 types with a
recursive definition could exceed the stack, potentially
leading to a denial of service.
Details can be found in the upstream advisory:
https://www.openssl.org/news/secadv/20180327.txt"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2017-3738"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2018-0739"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.openssl.org/news/secadv/20180327.txt"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2017-3738"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/source-package/openssl"
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/jessie/openssl"
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/stretch/openssl"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2018/dsa-4157"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the openssl packages.
For the oldstable distribution (jessie), these problems have been
fixed in version 1.0.1t-1+deb8u8. The oldstable distribution is not
affected by CVE-2017-3738.
For the stable distribution (stretch), these problems have been fixed
in version 1.1.0f-3+deb9u2."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/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:debian:debian_linux:openssl");
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:"2018/03/29");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/30");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 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:"libcrypto1.0.0-udeb", reference:"1.0.1t-1+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"libssl-dev", reference:"1.0.1t-1+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"libssl-doc", reference:"1.0.1t-1+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"libssl1.0.0", reference:"1.0.1t-1+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"libssl1.0.0-dbg", reference:"1.0.1t-1+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"openssl", reference:"1.0.1t-1+deb8u8")) flag++;
if (deb_check(release:"9.0", prefix:"libcrypto1.1-udeb", reference:"1.1.0f-3+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libssl-dev", reference:"1.1.0f-3+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libssl-doc", reference:"1.1.0f-3+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libssl1.1", reference:"1.1.0f-3+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libssl1.1-udeb", reference:"1.1.0f-3+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"openssl", reference:"1.1.0f-3+deb9u2")) 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");
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-3738
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0739
packages.debian.org/source/jessie/openssl
packages.debian.org/source/stretch/openssl
security-tracker.debian.org/tracker/CVE-2017-3738
security-tracker.debian.org/tracker/CVE-2018-0739
security-tracker.debian.org/tracker/source-package/openssl
www.debian.org/security/2018/dsa-4157
www.openssl.org/news/secadv/20180327.txt
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
Percentile
83.0%