Debian: Security Advisory (DSA-3514-1)

# SPDX-FileCopyrightText: 2016 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("1.3.6.1.4.1.25623.1.0.703514");
  script_cve_id("CVE-2015-7560", "CVE-2016-0771");
  script_tag(name:"creation_date", value:"2016-03-11 23:00:00 +0000 (Fri, 11 Mar 2016)");
  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:"4.9");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:S/C:P/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2016-03-21 21:25:27 +0000 (Mon, 21 Mar 2016)");

  script_name("Debian: Security Advisory (DSA-3514-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2016 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(7|8)");

  script_xref(name:"Advisory-ID", value:"DSA-3514-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2016/DSA-3514-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-3514");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'samba' package(s) announced via the DSA-3514-1 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 Samba, a SMB/CIFS file, print, and login server for Unix. The Common Vulnerabilities and Exposures project identifies the following issues:

CVE-2015-7560

Jeremy Allison of Google, Inc. and the Samba Team discovered that Samba incorrectly handles getting and setting ACLs on a symlink path. An authenticated malicious client can use SMB1 UNIX extensions to create a symlink to a file or directory, and then use non-UNIX SMB1 calls to overwrite the contents of the ACL on the file or directory linked to.

CVE-2016-0771

Garming Sam and Douglas Bagnall of Catalyst IT discovered that Samba is vulnerable to an out-of-bounds read issue during DNS TXT record handling, if Samba is deployed as an AD DC and chosen to run the internal DNS server. A remote attacker can exploit this flaw to cause a denial of service (Samba crash), or potentially, to allow leakage of memory from the server in the form of a DNS TXT reply.

Additionally this update includes a fix for a regression introduced due to the upstream fix for CVE-2015-5252 in DSA-3433-1 in setups where the share path is '/'.

For the oldstable distribution (wheezy), these problems have been fixed in version 2:3.6.6-6+deb7u7. The oldstable distribution (wheezy) is not affected by CVE-2016-0771.

For the stable distribution (jessie), these problems have been fixed in version 2:4.1.17+dfsg-2+deb8u2.

For the unstable distribution (sid), these problems have been fixed in version 2:4.3.6+dfsg-1.

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

  script_tag(name:"affected", value:"'samba' package(s) on Debian 7, 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 == "DEB7") {

  if(!isnull(res = isdpkgvuln(pkg:"libnss-winbind", ver:"2:3.6.6-6+deb7u7", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libpam-smbpass", ver:"2:3.6.6-6+deb7u7", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libpam-winbind", ver:"2:3.6.6-6+deb7u7", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libsmbclient", ver:"2:3.6.6-6+deb7u7", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libsmbclient-dev", ver:"2:3.6.6-6+deb7u7", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libwbclient-dev", ver:"2:3.6.6-6+deb7u7", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libwbclient0", ver:"2:3.6.6-6+deb7u7", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"samba", ver:"2:3.6.6-6+deb7u7", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"samba-common", ver:"2:3.6.6-6+deb7u7", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"samba-common-bin", ver:"2:3.6.6-6+deb7u7", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"samba-dbg", ver:"2:3.6.6-6+deb7u7", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"samba-doc", ver:"2:3.6.6-6+deb7u7", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"samba-doc-pdf", ver:"2:3.6.6-6+deb7u7", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"samba-tools", ver:"2:3.6.6-6+deb7u7", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"smbclient", ver:"2:3.6.6-6+deb7u7", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"swat", ver:"2:3.6.6-6+deb7u7", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"winbind", ver:"2:3.6.6-6+deb7u7", rls:"DEB7"))) {
    report += res;
  }

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

if(release == "DEB8") {

  if(!isnull(res = isdpkgvuln(pkg:"libnss-winbind", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libpam-smbpass", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libpam-winbind", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libparse-pidl-perl", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libsmbclient", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libsmbclient-dev", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libsmbsharemodes-dev", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libsmbsharemodes0", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libwbclient-dev", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libwbclient0", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"python-samba", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"registry-tools", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"samba", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"samba-common", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"samba-common-bin", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"samba-dbg", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"samba-dev", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"samba-doc", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"samba-dsdb-modules", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"samba-libs", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"samba-testsuite", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"samba-vfs-modules", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"smbclient", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"winbind", ver:"2:4.1.17+dfsg-2+deb8u2", rls:"DEB8"))) {
    report += res;
  }

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

exit(0);