Vulnerabilities > CVE-2018-20198 - NULL Pointer Dereference vulnerability in Audiocoding Freeware Advanced Audio Decoder 2 2.8.8

047910
CVSS 4.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
PARTIAL
network
audiocoding
CWE-476
nessus

Summary

A NULL pointer dereference was discovered in ifilter_bank of libfaad/filtbank.c in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8. The vulnerability causes a segmentation fault and application crash, which leads to denial of service because adding to windowed output is mishandled in the LONG_START_SEQUENCE case.

Vulnerable Configurations

Part Description Count
Application
Audiocoding
1

Common Weakness Enumeration (CWE)

Nessus

  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-4522.NASL
    descriptionMultiple vulnerabilities have been discovered in faad2, the Freeware Advanced Audio Coder. These vulnerabilities might allow remote attackers to cause denial-of-service, or potentially execute arbitrary code if crafted MPEG AAC files are processed.
    last seen2020-06-01
    modified2020-06-02
    plugin id128782
    published2019-09-16
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/128782
    titleDebian DSA-4522-1 : faad2 - security update
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Debian Security Advisory DSA-4522. The text 
    # itself is copyright (C) Software in the Public Interest, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(128782);
      script_version("1.2");
      script_cvs_date("Date: 2019/12/27");
    
      script_cve_id("CVE-2018-19502", "CVE-2018-19503", "CVE-2018-19504", "CVE-2018-20194", "CVE-2018-20195", "CVE-2018-20197", "CVE-2018-20198", "CVE-2018-20357", "CVE-2018-20358", "CVE-2018-20359", "CVE-2018-20361", "CVE-2018-20362", "CVE-2019-15296");
      script_xref(name:"DSA", value:"4522");
    
      script_name(english:"Debian DSA-4522-1 : faad2 - 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:
    "Multiple vulnerabilities have been discovered in faad2, the Freeware
    Advanced Audio Coder. These vulnerabilities might allow remote
    attackers to cause denial-of-service, or potentially execute arbitrary
    code if crafted MPEG AAC files are processed."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914641"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://security-tracker.debian.org/tracker/source-package/faad2"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://packages.debian.org/source/stretch/faad2"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.debian.org/security/2019/dsa-4522"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "Upgrade the faad2 packages.
    
    For the oldstable distribution (stretch), these problems have been
    fixed in version 2.8.0~cvs20161113-1+deb9u2."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:L/AC:L/PR:N/UI:R/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:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:faad2");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2018/11/23");
      script_set_attribute(attribute:"patch_publication_date", value:"2019/09/15");
      script_set_attribute(attribute:"plugin_publication_date", value:"2019/09/16");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2019 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:"9.0", prefix:"faad", reference:"2.8.0~cvs20161113-1+deb9u2")) flag++;
    if (deb_check(release:"9.0", prefix:"faad2-dbg", reference:"2.8.0~cvs20161113-1+deb9u2")) flag++;
    if (deb_check(release:"9.0", prefix:"libfaad-dev", reference:"2.8.0~cvs20161113-1+deb9u2")) flag++;
    if (deb_check(release:"9.0", prefix:"libfaad2", reference:"2.8.0~cvs20161113-1+deb9u2")) 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");
    
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-1791.NASL
    descriptionMultiple vulnerabilities have been found in faad2, the Freeware Advanced Audio Coder : CVE-2018-20194 CVE-2018-20197 Improper handling of implicit channel mapping reconfiguration leads to multiple heap based buffer overflow issues. These flaws might be leveraged by remote attackers to cause DoS. CVE-2018-20198 CVE-2018-20362 Insufficient user input validation in the sbr_hfadj module leads to stack-based buffer underflow issues. These flaws might be leveraged by remote attackers to cause DoS or any other unspecified impact. For Debian 8
    last seen2020-06-01
    modified2020-06-02
    plugin id125267
    published2019-05-20
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/125267
    titleDebian DLA-1791-1 : faad2 security update
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from Debian Security Advisory DLA-1791-1. The text
    # itself is copyright (C) Software in the Public Interest, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(125267);
      script_version("1.2");
      script_cvs_date("Date: 2020/01/15");
    
      script_cve_id("CVE-2018-20194", "CVE-2018-20197", "CVE-2018-20198", "CVE-2018-20362");
    
      script_name(english:"Debian DLA-1791-1 : faad2 security update");
      script_summary(english:"Checks dpkg output for the updated packages.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Debian host is missing a security update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "Multiple vulnerabilities have been found in faad2, the Freeware
    Advanced Audio Coder :
    
    CVE-2018-20194 CVE-2018-20197
    
    Improper handling of implicit channel mapping reconfiguration leads to
    multiple heap based buffer overflow issues. These flaws might be
    leveraged by remote attackers to cause DoS.
    
    CVE-2018-20198 CVE-2018-20362
    
    Insufficient user input validation in the sbr_hfadj module leads to
    stack-based buffer underflow issues. These flaws might be leveraged by
    remote attackers to cause DoS or any other unspecified impact.
    
    For Debian 8 'Jessie', these problems have been fixed in version
    2.7-8+deb8u2.
    
    We recommend that you upgrade your faad2 packages.
    
    NOTE: Tenable Network Security has extracted the preceding description
    block directly from the DLA security advisory. Tenable has attempted
    to automatically clean and format it as much as possible without
    introducing additional issues."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://lists.debian.org/debian-lts-announce/2019/05/msg00022.html"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://packages.debian.org/source/jessie/faad2"
      );
      script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:L/AC:L/PR:N/UI:R/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:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:faad");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:faad2-dbg");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libfaad-dev");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libfaad2");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2018/12/18");
      script_set_attribute(attribute:"patch_publication_date", value:"2019/05/19");
      script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/20");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2019-2020 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:"8.0", prefix:"faad", reference:"2.7-8+deb8u2")) flag++;
    if (deb_check(release:"8.0", prefix:"faad2-dbg", reference:"2.7-8+deb8u2")) flag++;
    if (deb_check(release:"8.0", prefix:"libfaad-dev", reference:"2.7-8+deb8u2")) flag++;
    if (deb_check(release:"8.0", prefix:"libfaad2", reference:"2.7-8+deb8u2")) 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");