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openvasCopyright (C) 2018 Greenbone AGOPENVAS:1361412562310704309
HistorySep 30, 2018 - 12:00 a.m.

Debian: Security Advisory (DSA-4309-1)

2018-09-3000:00:00
Copyright (C) 2018 Greenbone AG
plugins.openvas.org
34

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

7.7

Confidence

High

EPSS

0.011

Percentile

84.3%

The remote host is missing an update for the Debian

# SPDX-FileCopyrightText: 2018 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("1.3.6.1.4.1.25623.1.0.704309");
  script_cve_id("CVE-2018-17540");
  script_tag(name:"creation_date", value:"2018-09-30 22:00:00 +0000 (Sun, 30 Sep 2018)");
  script_version("2024-02-02T05:06:06+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:06 +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:N/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-11-27 17:22:33 +0000 (Tue, 27 Nov 2018)");

  script_name("Debian: Security Advisory (DSA-4309-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2018 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=DEB9");

  script_xref(name:"Advisory-ID", value:"DSA-4309-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2018/DSA-4309-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-4309");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/strongswan");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'strongswan' package(s) announced via the DSA-4309-1 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"Google's OSS-Fuzz revealed an exploitable bug in the gmp plugin caused by the patch that fixes CVE-2018-16151 and CVE-2018-16152 (DSA-4305-1).

An attacker could trigger it using crafted certificates with RSA keys with very small moduli. Verifying signatures with such keys would cause an integer underflow and subsequent heap buffer overflow resulting in a crash of the daemon. While arbitrary code execution is not completely ruled out because of the heap buffer overflow, due to the form of the data written to the buffer it seems difficult to actually exploit it in such a way.

For the stable distribution (stretch), this problem has been fixed in version 5.5.1-4+deb9u4.

We recommend that you upgrade your strongswan packages.

For the detailed security status of strongswan please refer to its security tracker page at: [link moved to references]");

  script_tag(name:"affected", value:"'strongswan' package(s) on Debian 9.");

  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 == "DEB9") {

  if(!isnull(res = isdpkgvuln(pkg:"charon-cmd", ver:"5.5.1-4+deb9u4", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"charon-systemd", ver:"5.5.1-4+deb9u4", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libcharon-extra-plugins", ver:"5.5.1-4+deb9u4", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libstrongswan", ver:"5.5.1-4+deb9u4", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libstrongswan-extra-plugins", ver:"5.5.1-4+deb9u4", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libstrongswan-standard-plugins", ver:"5.5.1-4+deb9u4", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"strongswan", ver:"5.5.1-4+deb9u4", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"strongswan-charon", ver:"5.5.1-4+deb9u4", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"strongswan-ike", ver:"5.5.1-4+deb9u4", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"strongswan-ikev1", ver:"5.5.1-4+deb9u4", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"strongswan-ikev2", ver:"5.5.1-4+deb9u4", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"strongswan-libcharon", ver:"5.5.1-4+deb9u4", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"strongswan-nm", ver:"5.5.1-4+deb9u4", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"strongswan-pki", ver:"5.5.1-4+deb9u4", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"strongswan-scepclient", ver:"5.5.1-4+deb9u4", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"strongswan-starter", ver:"5.5.1-4+deb9u4", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"strongswan-swanctl", ver:"5.5.1-4+deb9u4", rls:"DEB9"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

7.7

Confidence

High

EPSS

0.011

Percentile

84.3%