Debian: Security Advisory (DSA-3125-1)

# SPDX-FileCopyrightText: 2015 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("1.3.6.1.4.1.25623.1.0.703125");
  script_cve_id("CVE-2014-3569", "CVE-2014-3570", "CVE-2014-3571", "CVE-2014-3572", "CVE-2014-8275", "CVE-2015-0204", "CVE-2015-0205", "CVE-2015-0206");
  script_tag(name:"creation_date", value:"2015-01-10 23:00:00 +0000 (Sat, 10 Jan 2015)");
  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:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");

  script_name("Debian: Security Advisory (DSA-3125-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2015 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=DEB7");

  script_xref(name:"Advisory-ID", value:"DSA-3125-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2015/DSA-3125-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-3125");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'openssl' package(s) announced via the DSA-3125-1 advisory.");

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

  script_tag(name:"insight", value:"Multiple vulnerabilities have been discovered in OpenSSL, a Secure Sockets Layer toolkit. The Common Vulnerabilities and Exposures project identifies the following issues:

CVE-2014-3569

Frank Schmirler reported that the ssl23_get_client_hello function in OpenSSL does not properly handle attempts to use unsupported protocols. When OpenSSL is built with the no-ssl3 option and a SSL v3 ClientHello is received, the ssl method would be set to NULL which could later result in a NULL pointer dereference and daemon crash.

CVE-2014-3570

Pieter Wuille of Blockstream reported that the bignum squaring (BN_sqr) may produce incorrect results on some platforms, which might make it easier for remote attackers to defeat cryptographic protection mechanisms.

CVE-2014-3571

Markus Stenberg of Cisco Systems, Inc. reported that a carefully crafted DTLS message can cause a segmentation fault in OpenSSL due to a NULL pointer dereference. A remote attacker could use this flaw to mount a denial of service attack.

CVE-2014-3572

Karthikeyan Bhargavan of the PROSECCO team at INRIA reported that an OpenSSL client would accept a handshake using an ephemeral ECDH ciphersuite if the server key exchange message is omitted. This allows remote SSL servers to conduct ECDHE-to-ECDH downgrade attacks and trigger a loss of forward secrecy.

CVE-2014-8275

Antti Karjalainen and Tuomo Untinen of the Codenomicon CROSS project and Konrad Kraszewski of Google reported various certificate fingerprint issues, which allow remote attackers to defeat a fingerprint-based certificate-blacklist protection mechanism.

CVE-2015-0204

Karthikeyan Bhargavan of the PROSECCO team at INRIA reported that an OpenSSL client will accept the use of an ephemeral RSA key in a non-export RSA key exchange ciphersuite, violating the TLS standard. This allows remote SSL servers to downgrade the security of the session.

CVE-2015-0205

Karthikeyan Bhargavan of the PROSECCO team at INRIA reported that an OpenSSL server will accept a DH certificate for client authentication without the certificate verify message. This flaw effectively allows a client to authenticate without the use of a private key via crafted TLS handshake protocol traffic to a server that recognizes a certification authority with DH support.

CVE-2015-0206

Chris Mueller discovered a memory leak in the dtls1_buffer_record function. A remote attacker could exploit this flaw to mount a denial of service through memory exhaustion by repeatedly sending specially crafted DTLS records.

For the stable distribution (wheezy), these problems have been fixed in version 1.0.1e-2+deb7u14.

For the upcoming stable distribution (jessie), these problems will be fixed soon.

For the unstable distribution (sid), these problems have been fixed in version 1.0.1k-1.

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

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

  if(!isnull(res = isdpkgvuln(pkg:"libcrypto1.0.0-udeb", ver:"1.0.1e-2+deb7u14", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libssl-dev", ver:"1.0.1e-2+deb7u14", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libssl-doc", ver:"1.0.1e-2+deb7u14", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libssl1.0.0", ver:"1.0.1e-2+deb7u14", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libssl1.0.0-dbg", ver:"1.0.1e-2+deb7u14", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"openssl", ver:"1.0.1e-2+deb7u14", rls:"DEB7"))) {
    report += res;
  }

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

exit(0);