Debian: Security Advisory (DSA-2375-1)

# SPDX-FileCopyrightText: 2023 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("1.3.6.1.4.1.25623.1.1.1.1.2011.2375");
  script_cve_id("CVE-2011-4862");
  script_tag(name:"creation_date", value:"2023-03-08 12:56:44 +0000 (Wed, 08 Mar 2023)");
  script_version("2024-02-01T14:37:13+0000");
  script_tag(name:"last_modification", value:"2024-02-01 14:37:13 +0000 (Thu, 01 Feb 2024)");
  script_tag(name:"cvss_base", value:"10.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");

  script_name("Debian: Security Advisory (DSA-2375-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2023 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(5|6)");

  script_xref(name:"Advisory-ID", value:"DSA-2375-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2011/DSA-2375-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-2375");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'krb5, krb5-appl' package(s) announced via the DSA-2375-1 advisory.");

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

  script_tag(name:"insight", value:"It was discovered that the encryption support for BSD telnetd contains a pre-authentication buffer overflow, which may enable remote attackers who can connect to the Telnet port to execute arbitrary code with root privileges.

For the oldstable distribution (lenny), this problem has been fixed in version 1.6.dfsg.4~beta1-5lenny7 of the krb5 package.

For the stable distribution (squeeze), this problem has been fixed in version 1:1.0.1-1.2 of the krb5-appl package.

For the testing distribution (wheezy) and the unstable distribution (sid), this problem will be fixed soon.

We recommend that you upgrade your krb5 and krb5-appl packages.");

  script_tag(name:"affected", value:"'krb5, krb5-appl' package(s) on Debian 5, Debian 6.");

  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 == "DEB5") {

  if(!isnull(res = isdpkgvuln(pkg:"krb5-admin-server", ver:"1.6.dfsg.4~beta1-5lenny7", rls:"DEB5"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-clients", ver:"1.6.dfsg.4~beta1-5lenny7", rls:"DEB5"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-doc", ver:"1.6.dfsg.4~beta1-5lenny7", rls:"DEB5"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-ftpd", ver:"1.6.dfsg.4~beta1-5lenny7", rls:"DEB5"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-kdc", ver:"1.6.dfsg.4~beta1-5lenny7", rls:"DEB5"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-kdc-ldap", ver:"1.6.dfsg.4~beta1-5lenny7", rls:"DEB5"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-pkinit", ver:"1.6.dfsg.4~beta1-5lenny7", rls:"DEB5"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-rsh-server", ver:"1.6.dfsg.4~beta1-5lenny7", rls:"DEB5"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-telnetd", ver:"1.6.dfsg.4~beta1-5lenny7", rls:"DEB5"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-user", ver:"1.6.dfsg.4~beta1-5lenny7", rls:"DEB5"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkadm55", ver:"1.6.dfsg.4~beta1-5lenny7", rls:"DEB5"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrb5-dbg", ver:"1.6.dfsg.4~beta1-5lenny7", rls:"DEB5"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrb5-dev", ver:"1.6.dfsg.4~beta1-5lenny7", rls:"DEB5"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrb53", ver:"1.6.dfsg.4~beta1-5lenny7", rls:"DEB5"))) {
    report += res;
  }

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

if(release == "DEB6") {

  if(!isnull(res = isdpkgvuln(pkg:"krb5-clients", ver:"1:1.0.1-1.2", rls:"DEB6"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-ftpd", ver:"1:1.0.1-1.2", rls:"DEB6"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-rsh-server", ver:"1:1.0.1-1.2", rls:"DEB6"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-telnetd", ver:"1:1.0.1-1.2", rls:"DEB6"))) {
    report += res;
  }

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

exit(0);