Debian: Security Advisory (DSA-3216-1)

# 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("1.3.6.1.4.1.25623.1.0.703216");
  script_cve_id("CVE-2015-2928", "CVE-2015-2929");
  script_tag(name:"creation_date", value:"2015-04-05 22:00:00 +0000 (Sun, 05 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:N/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/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:"2020-02-01 17:28:13 +0000 (Sat, 01 Feb 2020)");

  script_name("Debian: Security Advisory (DSA-3216-1)");
  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-3216-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2015/DSA-3216-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-3216");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'tor' package(s) announced via the DSA-3216-1 advisory.");

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

  script_tag(name:"insight", value:"Several vulnerabilities have been discovered in Tor, a connection-based low-latency anonymous communication system:

CVE-2015-2928

disgleirio discovered that a malicious client could trigger an assertion failure in a Tor instance providing a hidden service, thus rendering the service inaccessible.

CVE-2015-2929

DonnchaC discovered that Tor clients would crash with an assertion failure upon parsing specially crafted hidden service descriptors.

Introduction points would accept multiple INTRODUCE1 cells on one circuit, making it inexpensive for an attacker to overload a hidden service with introductions. Introduction points now no longer allow multiple cells of that type on the same circuit.

For the stable distribution (wheezy), these problems have been fixed in version 0.2.4.27-1.

For the unstable distribution (sid), these problems have been fixed in version 0.2.5.12-1.

For the experimental distribution, these problems have been fixed in version 0.2.6.7-1.

We recommend that you upgrade your tor packages.");

  script_tag(name:"affected", value:"'tor' 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:"tor", ver:"0.2.4.27-1", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"tor-dbg", ver:"0.2.4.27-1", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"tor-geoipdb", ver:"0.2.4.27-1", rls:"DEB7"))) {
    report += res;
  }

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

exit(0);