CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
AI Score
Confidence
High
EPSS
Percentile
79.2%
The remote host is missing an update for the Debian
# SPDX-FileCopyrightText: 2015 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.703223");
script_cve_id("CVE-2015-1798", "CVE-2015-1799", "CVE-2015-3405");
script_tag(name:"creation_date", value:"2015-04-11 22:00:00 +0000 (Sat, 11 Apr 2015)");
script_version("2024-02-02T05:06:05+0000");
script_tag(name:"last_modification", value:"2024-02-02 05:06:05 +0000 (Fri, 02 Feb 2024)");
script_tag(name:"cvss_base", value:"5.0");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");
script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2017-08-25 14:55:58 +0000 (Fri, 25 Aug 2017)");
script_name("Debian: Security Advisory (DSA-3223-1)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2015 Greenbone AG");
script_family("Debian Local Security Checks");
script_dependencies("gather-package-list.nasl");
script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages", re:"ssh/login/release=DEB7");
script_xref(name:"Advisory-ID", value:"DSA-3223-1");
script_xref(name:"URL", value:"https://www.debian.org/security/2015/DSA-3223-1");
script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-3223");
script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'ntp' package(s) announced via the DSA-3223-1 advisory.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");
script_tag(name:"insight", value:"Multiple vulnerabilities were discovered in ntp, an implementation of the Network Time Protocol:
CVE-2015-1798
When configured to use a symmetric key with an NTP peer, ntpd would accept packets without MAC as if they had a valid MAC. This could allow a remote attacker to bypass the packet authentication and send malicious packets without having to know the symmetric key.
CVE-2015-1799
When peering with other NTP hosts using authenticated symmetric association, ntpd would update its internal state variables before the MAC of the NTP messages was validated. This could allow a remote attacker to cause a denial of service by impeding synchronization between NTP peers.
Additionally, it was discovered that generating MD5 keys using ntp-keygen on big endian machines would either trigger an endless loop, or generate non-random keys.
For the stable distribution (wheezy), these problems have been fixed in version 1:4.2.6.p5+dfsg-2+deb7u4.
For the unstable distribution (sid), these problems have been fixed in version 1:4.2.6.p5+dfsg-7.
We recommend that you upgrade your ntp packages.");
script_tag(name:"affected", value:"'ntp' package(s) on Debian 7.");
script_tag(name:"solution", value:"Please install the updated package(s).");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"package");
exit(0);
}
include("revisions-lib.inc");
include("pkg-lib-deb.inc");
release = dpkg_get_ssh_release();
if(!release)
exit(0);
res = "";
report = "";
if(release == "DEB7") {
if(!isnull(res = isdpkgvuln(pkg:"ntp", ver:"1:4.2.6.p5+dfsg-2+deb7u4", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"ntp-doc", ver:"1:4.2.6.p5+dfsg-2+deb7u4", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"ntpdate", ver:"1:4.2.6.p5+dfsg-2+deb7u4", rls:"DEB7"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
exit(0);
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
AI Score
Confidence
High
EPSS
Percentile
79.2%