Debian: Security Advisory (DSA-2774-1)

# SPDX-FileCopyrightText: 2013 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("1.3.6.1.4.1.25623.1.0.702774");
  script_cve_id("CVE-2013-4351", "CVE-2013-4402");
  script_tag(name:"creation_date", value:"2013-10-09 22:00:00 +0000 (Wed, 09 Oct 2013)");
  script_version("2024-02-02T05:06:04+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:04 +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-2774-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2013 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=DEB(6|7)");

  script_xref(name:"Advisory-ID", value:"DSA-2774-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2013/DSA-2774-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-2774");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'gnupg2' package(s) announced via the DSA-2774-1 advisory.");

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

  script_tag(name:"insight", value:"Two vulnerabilities were discovered in GnuPG 2, the GNU privacy guard, a free PGP replacement. The Common Vulnerabilities and Exposures project identifies the following problems:

CVE-2013-4351

When a key or subkey had its key flags subpacket set to all bits off, GnuPG currently would treat the key as having all bits set. That is, where the owner wanted to indicate no use permitted, GnuPG would interpret it as all use permitted. Such no use permitted keys are rare and only used in very special circumstances.

CVE-2013-4402

Infinite recursion in the compressed packet parser was possible with crafted input data, which may be used to cause a denial of service.

For the oldstable distribution (squeeze), these problems have been fixed in version 2.0.14-2+squeeze2.

For the stable distribution (wheezy), these problems have been fixed in version 2.0.19-2+deb7u1.

For the unstable distribution (sid), these problems have been fixed in version 2.0.22-1.

We recommend that you upgrade your gnupg2 packages.");

  script_tag(name:"affected", value:"'gnupg2' package(s) on Debian 6, 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 == "DEB6") {

  if(!isnull(res = isdpkgvuln(pkg:"gnupg-agent", ver:"2.0.14-2+squeeze2", rls:"DEB6"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"gnupg2", ver:"2.0.14-2+squeeze2", rls:"DEB6"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"gpgsm", ver:"2.0.14-2+squeeze2", rls:"DEB6"))) {
    report += res;
  }

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

if(release == "DEB7") {

  if(!isnull(res = isdpkgvuln(pkg:"gnupg-agent", ver:"2.0.19-2+deb7u1", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"gnupg2", ver:"2.0.19-2+deb7u1", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"gpgsm", ver:"2.0.19-2+deb7u1", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"scdaemon", ver:"2.0.19-2+deb7u1", rls:"DEB7"))) {
    report += res;
  }

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

exit(0);