Vulnerabilities > CVE-2012-3458 - Cryptographic Issues vulnerability in Python Beaker

047910
CVSS 4.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
NONE
network
python
CWE-310
nessus
NVD
Published: 2012-09-15
Updated: 2012-09-17

Summary

Beaker before 1.6.4, when using PyCrypto to encrypt sessions, uses AES in ECB cipher mode, which might allow remote attackers to obtain portions of sensitive session data via unspecified vectors.

Vulnerable Configurations

Part Description Count
Application
Python
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Signature Spoofing by Key Recreation
    An attacker obtains an authoritative or reputable signer's private signature key by exploiting a cryptographic weakness in the signature algorithm or pseudorandom number generation and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.

Nessus

NASL familyDebian Local Security Checks
NASL idDEBIAN_DSA-2541.NASL
descriptionIt was discovered that Beaker, a cache and session library for Python, when using the python-crypto backend, is vulnerable to information disclosure due to a cryptographic weakness related to the use of the AES cipher in ECB mode. Systems that have the python-pycryptopp package should not be vulnerable, as this backend is preferred over python-crypto. After applying this update, existing sessions will be invalidated.
last seen2020-03-17
modified2012-09-10
plugin id62012
published2012-09-10
reporterThis script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/62012
titleDebian DSA-2541-1 : beaker - information disclosure
code
#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-2541. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(62012);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2012-3458");
  script_bugtraq_id(55001);
  script_xref(name:"DSA", value:"2541");

  script_name(english:"Debian DSA-2541-1 : beaker - information disclosure");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"It was discovered that Beaker, a cache and session library for Python,
when using the python-crypto backend, is vulnerable to information
disclosure due to a cryptographic weakness related to the use of the
AES cipher in ECB mode.

Systems that have the python-pycryptopp package should not be
vulnerable, as this backend is preferred over python-crypto.

After applying this update, existing sessions will be invalidated."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684890"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze/beaker"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2012/dsa-2541"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the beaker packages.

For the stable distribution (squeeze), this problem has been fixed in
version 1.5.4-4+squeeze1."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:beaker");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2012/09/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/09/10");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"6.0", prefix:"python-beaker", reference:"1.5.4-4+squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"python3-beaker", reference:"1.5.4-4+squeeze1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

References