Vulnerabilities > CVE-2015-6674 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in multiple products

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
low complexity
inspircd
debian
CWE-119
nessus

Summary

Buffer underflow vulnerability in the Debian inspircd package before 2.0.5-1+deb7u1 for wheezy and before 2.0.16-1 for jessie and sid. NOTE: This issue exists as an additional issue from an incomplete fix of CVE-2012-1836.

Vulnerable Configurations

Part Description Count
Application
Inspircd
97
OS
Debian
2

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-3226.NASL
    descriptionAdam discovered several problems in inspircd, an IRC daemon : - An incomplete patch for CVE-2012-1836 failed to adequately resolve the problem where maliciously crafted DNS requests could lead to remote code execution through a heap-based buffer overflow. - The incorrect processing of specific DNS packets could trigger an infinite loop, thus resulting in a denial of service.
    last seen2020-06-01
    modified2020-06-02
    plugin id82839
    published2015-04-17
    reporterThis script is Copyright (C) 2015-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/82839
    titleDebian DSA-3226-1 : inspircd - security update
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Debian Security Advisory DSA-3226. The text 
    # itself is copyright (C) Software in the Public Interest, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(82839);
      script_version("1.9");
      script_cvs_date("Date: 2018/11/10 11:49:37");
    
      script_cve_id("CVE-2012-6696", "CVE-2012-6697", "CVE-2015-6674");
      script_bugtraq_id(52561);
      script_xref(name:"DSA", value:"3226");
    
      script_name(english:"Debian DSA-3226-1 : inspircd - security update");
      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:
    "Adam discovered several problems in inspircd, an IRC daemon :
    
      - An incomplete patch for CVE-2012-1836 failed to
        adequately resolve the problem where maliciously crafted
        DNS requests could lead to remote code execution through
        a heap-based buffer overflow.
      - The incorrect processing of specific DNS packets could
        trigger an infinite loop, thus resulting in a denial of
        service."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=780880"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://security-tracker.debian.org/tracker/CVE-2012-1836"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://packages.debian.org/source/wheezy/inspircd"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.debian.org/security/2015/dsa-3226"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "Upgrade the inspircd packages.
    
    For the stable distribution (wheezy), this problem has been fixed in
    version 2.0.5-1+deb7u1.
    
    
    For the upcoming stable distribution (jessie) and unstable
    distribution (sid), this problem has been fixed in version 2.0.16-1."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
      script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/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:inspircd");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2015/04/15");
      script_set_attribute(attribute:"plugin_publication_date", value:"2015/04/17");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2015-2018 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:"7.0", prefix:"inspircd", reference:"2.0.5-1+deb7u1")) flag++;
    if (deb_check(release:"7.0", prefix:"inspircd-dbg", reference:"2.0.5-1+deb7u1")) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
      else security_hole(0);
      exit(0);
    }
    else audit(AUDIT_HOST_NOT, "affected");
    
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201512-13.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201512-13 (InspIRCd: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in InspIRCd. Please review the CVE identifiers referenced below for details. Impact : A remote attacker could possibly execute arbitrary code with the privileges of the process, or cause a Denial of Service condition. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id87713
    published2016-01-04
    reporterThis script is Copyright (C) 2016-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/87713
    titleGLSA-201512-13 : InspIRCd: Multiple vulnerabilities