FreeBSD Ports: libtasn1

# SPDX-FileCopyrightText: 2012 E-Soft Inc.
# 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("1.3.6.1.4.1.25623.1.0.71293");
  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_cve_id("CVE-2012-1569");
  script_version("2023-07-26T05:05:09+0000");
  script_tag(name:"last_modification", value:"2023-07-26 05:05:09 +0000 (Wed, 26 Jul 2023)");
  script_tag(name:"creation_date", value:"2012-04-30 07:59:26 -0400 (Mon, 30 Apr 2012)");
  script_name("FreeBSD Ports: libtasn1");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2012 E-Soft Inc.");
  script_family("FreeBSD Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/freebsd", "ssh/login/freebsdrel");

  script_tag(name:"insight", value:"The following packages are affected:

  libtasn1
   gnutls
   gnutls-devel

CVE-2012-1569
The asn1_get_length_der function in decoding.c in GNU Libtasn1 before
2.12, as used in GnuTLS before 3.0.16 and other products, does not
properly handle certain large length values, which allows remote
attackers to cause a denial of service (heap memory corruption and
application crash) or possibly have unspecified other impact via a
crafted ASN.1 structure.");

  script_tag(name:"solution", value:"Update your system with the appropriate patches or
  software upgrades.");

  script_tag(name:"summary", value:"The remote host is missing an update to the system
  as announced in the referenced advisory.");

  script_tag(name:"qod_type", value:"package");
  script_tag(name:"solution_type", value:"VendorFix");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-bsd.inc");

vuln = FALSE;
txt = "";

bver = portver(pkg:"libtasn1");
if(!isnull(bver) && revcomp(a:bver, b:"2.12")<0) {
  txt += "Package libtasn1 version " + bver + " is installed which is known to be vulnerable.\n";
  vuln = TRUE;
}
bver = portver(pkg:"gnutls");
if(!isnull(bver) && revcomp(a:bver, b:"2.12.18")<0) {
  txt += "Package gnutls version " + bver + " is installed which is known to be vulnerable.\n";
  vuln = TRUE;
}
bver = portver(pkg:"gnutls-devel");
if(!isnull(bver) && revcomp(a:bver, b:"2.99")>0 && revcomp(a:bver, b:"3.0.16")<0) {
  txt += "Package gnutls-devel version " + bver + " is installed which is known to be vulnerable.\n";
  vuln = TRUE;
}

if(vuln) {
  security_message(data:txt);
} else if (__pkg_match) {
  exit(99);
}