Debian: Security Advisory (DSA-3565-1)

# 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("1.3.6.1.4.1.25623.1.0.703565");
  script_cve_id("CVE-2015-5726", "CVE-2015-5727", "CVE-2015-7827", "CVE-2016-2194", "CVE-2016-2195", "CVE-2016-2849");
  script_tag(name:"creation_date", value:"2016-05-01 22:00:00 +0000 (Sun, 01 May 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:"10.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2016-05-14 01:29:35 +0000 (Sat, 14 May 2016)");

  script_name("Debian: Security Advisory (DSA-3565-1)");
  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=DEB8");

  script_xref(name:"Advisory-ID", value:"DSA-3565-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2016/DSA-3565-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-3565");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'botan1.10' package(s) announced via the DSA-3565-1 advisory.");

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

  script_tag(name:"insight", value:"Several security vulnerabilities were found in botan1.10, a C++ library which provides support for many common cryptographic operations, including encryption, authentication, X.509v3 certificates and CRLs.

CVE-2015-5726

The BER decoder would crash due to reading from offset 0 of an empty vector if it encountered a BIT STRING which did not contain any data at all. This can be used to easily crash applications reading untrusted ASN.1 data, but does not seem exploitable for code execution.

CVE-2015-5727

The BER decoder would allocate a fairly arbitrary amount of memory in a length field, even if there was no chance the read request would succeed. This might cause the process to run out of memory or invoke the OOM killer.

CVE-2015-7827

Use constant time PKCS #1 unpadding to avoid possible side channel attack against RSA decryption

CVE-2016-2194

Infinite loop in modular square root algorithm. The ressol function implementing the Tonelli-Shanks algorithm for finding square roots could be sent into a nearly infinite loop due to a misplaced conditional check. This could occur if a composite modulus is provided, as this algorithm is only defined for primes. This function is exposed to attacker controlled input via the OS2ECP function during ECC point decompression.

CVE-2016-2195

Fix Heap overflow on invalid ECC point.

CVE-2016-2849

Use constant time modular inverse algorithm to avoid possible side channel attack against ECDSA.

For the stable distribution (jessie), these problems have been fixed in version 1.10.8-2+deb8u1.

We recommend that you upgrade your botan1.10 packages.");

  script_tag(name:"affected", value:"'botan1.10' package(s) on 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 == "DEB8") {

  if(!isnull(res = isdpkgvuln(pkg:"botan1.10-dbg", ver:"1.10.8-2+deb8u1", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libbotan-1.10-0", ver:"1.10.8-2+deb8u1", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libbotan1.10-dev", ver:"1.10.8-2+deb8u1", rls:"DEB8"))) {
    report += res;
  }

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

exit(0);