CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
AI Score
Confidence
Low
EPSS
Percentile
73.9%
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("1.3.6.1.4.1.25623.1.0.703299");
script_cve_id("CVE-2015-3644");
script_tag(name:"creation_date", value:"2015-07-01 22:00:00 +0000 (Wed, 01 Jul 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:"5.8");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:N");
script_name("Debian: Security Advisory (DSA-3299-1)");
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=DEB8");
script_xref(name:"Advisory-ID", value:"DSA-3299-1");
script_xref(name:"URL", value:"https://www.debian.org/security/2015/DSA-3299-1");
script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-3299");
script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'stunnel4' package(s) announced via the DSA-3299-1 advisory.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");
script_tag(name:"insight", value:"Johan Olofsson discovered an authentication bypass vulnerability in Stunnel, a program designed to work as an universal SSL tunnel for network daemons. When Stunnel in server mode is used with the redirect option and certificate-based authentication is enabled with verify = 2 or higher, then only the initial connection is redirected to the hosts specified with redirect. This allows a remote attacker to bypass authentication.
For the stable distribution (jessie), this problem has been fixed in version 3:5.06-2+deb8u1.
For the testing distribution (stretch), this problem has been fixed in version 3:5.18-1.
For the unstable distribution (sid), this problem has been fixed in version 3:5.18-1.
We recommend that you upgrade your stunnel4 packages.");
script_tag(name:"affected", value:"'stunnel4' package(s) on Debian 8.");
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 == "DEB8") {
if(!isnull(res = isdpkgvuln(pkg:"stunnel4", ver:"3:5.06-2+deb8u1", rls:"DEB8"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
exit(0);