Ubuntu: Security Advisory (USN-1732-2)

# 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("1.3.6.1.4.1.25623.1.0.841348");
  script_cve_id("CVE-2012-2686", "CVE-2013-0169");
  script_tag(name:"creation_date", value:"2013-03-05 04:19:00 +0000 (Tue, 05 Mar 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:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");

  script_name("Ubuntu: Security Advisory (USN-1732-2)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2013 Greenbone AG");
  script_family("Ubuntu Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/ubuntu_linux", "ssh/login/packages", re:"ssh/login/release=UBUNTU(12\.04\ LTS|12\.10)");

  script_xref(name:"Advisory-ID", value:"USN-1732-2");
  script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-1732-2");
  script_xref(name:"URL", value:"https://launchpad.net/bugs/1133333");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'openssl' package(s) announced via the USN-1732-2 advisory.");

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

  script_tag(name:"insight", value:"USN-1732-1 fixed vulnerabilities in OpenSSL. The fix for CVE-2013-0169 and
CVE-2012-2686 introduced a regression causing decryption failures on
hardware supporting AES-NI. This update temporarily reverts the security
fix pending further investigation. We apologize for the inconvenience.

Original advisory details:

 Adam Langley and Wolfgang Ettlingers discovered that OpenSSL incorrectly
 handled certain crafted CBC data when used with AES-NI. A remote attacker
 could use this issue to cause OpenSSL to crash, resulting in a denial of
 service. This issue only affected Ubuntu 12.04 LTS and Ubuntu 12.10.
 (CVE-2012-2686)

 Nadhem Alfardan and Kenny Paterson discovered that the TLS protocol as used
 in OpenSSL was vulnerable to a timing side-channel attack known as the
 'Lucky Thirteen' issue. A remote attacker could use this issue to perform
 plaintext-recovery attacks via analysis of timing data. (CVE-2013-0169)");

  script_tag(name:"affected", value:"'openssl' package(s) on Ubuntu 12.04, Ubuntu 12.10.");

  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 == "UBUNTU12.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"libssl1.0.0", ver:"1.0.1-4ubuntu5.7", rls:"UBUNTU12.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"openssl", ver:"1.0.1-4ubuntu5.7", rls:"UBUNTU12.04 LTS"))) {
    report += res;
  }

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

if(release == "UBUNTU12.10") {

  if(!isnull(res = isdpkgvuln(pkg:"libssl1.0.0", ver:"1.0.1c-3ubuntu2.2", rls:"UBUNTU12.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"openssl", ver:"1.0.1c-3ubuntu2.2", rls:"UBUNTU12.10"))) {
    report += res;
  }

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

exit(0);