10 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.967 High
EPSS
Percentile
99.7%
Several vulnerabilities were discovered in OpenSSL, a Secure Socket Layer toolkit.
CVE-2016-2105
Guido Vranken discovered that an overflow can occur in the function EVP_EncodeUpdate(), used for Base64 encoding, if an attacker can supply a large amount of data. This could lead to a heap corruption.
CVE-2016-2106
Guido Vranken discovered that an overflow can occur in the function EVP_EncryptUpdate() if an attacker can supply a large amount of data.
This could lead to a heap corruption.
CVE-2016-2107
Juraj Somorovsky discovered a padding oracle in the AES CBC cipher implementation based on the AES-NI instruction set. This could allow an attacker to decrypt TLS traffic encrypted with one of the cipher suites based on AES CBC.
CVE-2016-2108
David Benjamin from Google discovered that two separate bugs in the ASN.1 encoder, related to handling of negative zero integer values and large universal tags, could lead to an out-of-bounds write.
CVE-2016-2109
Brian Carpenter discovered that when ASN.1 data is read from a BIO using functions such as d2i_CMS_bio(), a short invalid encoding can casuse allocation of large amounts of memory potentially consuming excessive resources or exhausting memory.
CVE-2016-2176
Guido Vranken discovered that ASN.1 Strings that are over 1024 bytes can cause an overread in applications using the X509_NAME_oneline() function on EBCDIC systems. This could result in arbitrary stack data being returned in the buffer.
Additional information about these issues can be found in the OpenSSL security advisory at https://www.openssl.org/news/secadv/20160503.txt
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.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-456-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(90874);
script_version("2.13");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");
script_cve_id("CVE-2016-2105", "CVE-2016-2106", "CVE-2016-2107", "CVE-2016-2108", "CVE-2016-2109", "CVE-2016-2176");
script_name(english:"Debian DLA-456-1 : openssl 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 OpenSSL, a Secure Socket
Layer toolkit.
CVE-2016-2105
Guido Vranken discovered that an overflow can occur in the function
EVP_EncodeUpdate(), used for Base64 encoding, if an attacker can
supply a large amount of data. This could lead to a heap corruption.
CVE-2016-2106
Guido Vranken discovered that an overflow can occur in the function
EVP_EncryptUpdate() if an attacker can supply a large amount of data.
This could lead to a heap corruption.
CVE-2016-2107
Juraj Somorovsky discovered a padding oracle in the AES CBC cipher
implementation based on the AES-NI instruction set. This could allow
an attacker to decrypt TLS traffic encrypted with one of the cipher
suites based on AES CBC.
CVE-2016-2108
David Benjamin from Google discovered that two separate bugs in the
ASN.1 encoder, related to handling of negative zero integer values and
large universal tags, could lead to an out-of-bounds write.
CVE-2016-2109
Brian Carpenter discovered that when ASN.1 data is read from a BIO
using functions such as d2i_CMS_bio(), a short invalid encoding can
casuse allocation of large amounts of memory potentially consuming
excessive resources or exhausting memory.
CVE-2016-2176
Guido Vranken discovered that ASN.1 Strings that are over 1024 bytes
can cause an overread in applications using the X509_NAME_oneline()
function on EBCDIC systems. This could result in arbitrary stack data
being returned in the buffer.
Additional information about these issues can be found in the OpenSSL
security advisory at https://www.openssl.org/news/secadv/20160503.txt
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/2016/05/msg00006.html"
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/wheezy/openssl"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.openssl.org/news/secadv/20160503.txt"
);
script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libssl-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libssl-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libssl1.0.0");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libssl1.0.0-dbg");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openssl");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");
script_set_attribute(attribute:"patch_publication_date", value:"2016/05/03");
script_set_attribute(attribute:"plugin_publication_date", value:"2016/05/04");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2016-2021 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:"libssl-dev", reference:"1.0.1e-2+deb7u21")) flag++;
if (deb_check(release:"7.0", prefix:"libssl-doc", reference:"1.0.1e-2+deb7u21")) flag++;
if (deb_check(release:"7.0", prefix:"libssl1.0.0", reference:"1.0.1e-2+deb7u21")) flag++;
if (deb_check(release:"7.0", prefix:"libssl1.0.0-dbg", reference:"1.0.1e-2+deb7u21")) flag++;
if (deb_check(release:"7.0", prefix:"openssl", reference:"1.0.1e-2+deb7u21")) flag++;
if (flag)
{
if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
else security_hole(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | libssl-dev | p-cpe:/a:debian:debian_linux:libssl-dev |
debian | debian_linux | libssl-doc | p-cpe:/a:debian:debian_linux:libssl-doc |
debian | debian_linux | libssl1.0.0 | p-cpe:/a:debian:debian_linux:libssl1.0.0 |
debian | debian_linux | libssl1.0.0-dbg | p-cpe:/a:debian:debian_linux:libssl1.0.0-dbg |
debian | debian_linux | openssl | p-cpe:/a:debian:debian_linux:openssl |
debian | debian_linux | 7.0 | cpe:/o:debian:debian_linux:7.0 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2105
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2106
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2107
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2108
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2109
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2176
lists.debian.org/debian-lts-announce/2016/05/msg00006.html
packages.debian.org/source/wheezy/openssl
www.openssl.org/news/secadv/20160503.txt
10 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.967 High
EPSS
Percentile
99.7%