7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.017 Low
EPSS
Percentile
87.7%
An integer underflow flaw, leading to a heap-based buffer overflow, was found in the ksba_oid_to_str() function of libksba, an X.509 and CMS (PKCS#7) library. By using special crafted S/MIME messages or ECC based OpenPGP data, it is possible to create a buffer overflow, which could cause an application using libksba to crash (denial of service), or potentially, execute arbitrary code.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DSA-3078. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(79600);
script_version("1.10");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");
script_cve_id("CVE-2014-9087");
script_bugtraq_id(71285);
script_xref(name:"DSA", value:"3078");
script_name(english:"Debian DSA-3078-1 : libksba - 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:
"An integer underflow flaw, leading to a heap-based buffer overflow,
was found in the ksba_oid_to_str() function of libksba, an X.509 and
CMS (PKCS#7) library. By using special crafted S/MIME messages or ECC
based OpenPGP data, it is possible to create a buffer overflow, which
could cause an application using libksba to crash (denial of service),
or potentially, execute arbitrary code."
);
script_set_attribute(
attribute:"see_also",
value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=770972"
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/wheezy/libksba"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2014/dsa-3078"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the libksba packages.
For the stable distribution (wheezy), this problem has been fixed in
version 1.2.0-2+deb7u1.
For the upcoming stable distribution (jessie), this problem has been
fixed in version 1.3.2-1."
);
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_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:libksba");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");
script_set_attribute(attribute:"patch_publication_date", value:"2014/11/27");
script_set_attribute(attribute:"plugin_publication_date", value:"2014/11/28");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2014-2021 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:"libksba-dev", reference:"1.2.0-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libksba8", reference:"1.2.0-2+deb7u1")) 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");
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | libksba | p-cpe:/a:debian:debian_linux:libksba |
debian | debian_linux | 7.0 | cpe:/o:debian:debian_linux:7.0 |