Vulnerabilities > CVE-2020-6438 - Information Exposure Through an Error Message vulnerability in multiple products

047910
CVSS 4.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
LOW
Integrity impact
NONE
Availability impact
NONE
network
low complexity
google
debian
fedoraproject
opensuse
CWE-209
nessus
NVD
Published: 2020-04-13
Updated: 2023-11-07

Summary

Insufficient policy enforcement in extensions in Google Chrome prior to 81.0.4044.92 allowed an attacker who convinced a user to install a malicious extension to obtain potentially sensitive information from process memory via a crafted Chrome Extension.

Vulnerable Configurations

Part Description Count
Application
Google
5607
Application
Opensuse
1
OS
Debian
2
OS
Fedoraproject
3
OS
Opensuse
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Fuzzing for garnering J2EE/.NET-based stack traces, for application mapping
    An attacker sends random, malformed, or otherwise unexpected messages to a target application and observes any stack traces produced by error messages. Fuzzing techniques involve sending random or malformed messages to a target and monitoring the target's response. The attacker does not initially know how a target will respond to individual messages but by attempting a large number of message variants they may find a variant that trigger's desired behavior. In this attack, the purpose of the fuzzing is to cause the targeted application to return an error including a stack trace, although fuzzing a target can also sometimes cause the target to enter an unstable state, causing a crash. The stack trace enumerates the chain of methods that led up to the point where the error was encountered. This can not only reveal the names of the methods (some of which may have known weaknesses) but possibly also the location of class files and libraries as well as parameter values. In some cases, the stack trace might even disclose sensitive configuration or user information.
  • Fuzzing and observing application log data/errors for application mapping
    An attacker sends random, malformed, or otherwise unexpected messages to a target application and observes the application's log or error messages returned. Fuzzing techniques involve sending random or malformed messages to a target and monitoring the target's response. The attacker does not initially know how a target will respond to individual messages but by attempting a large number of message variants they may find a variant that trigger's desired behavior. In this attack, the purpose of the fuzzing is to observe the application's log and error messages, although fuzzing a target can also sometimes cause the target to enter an unstable state, causing a crash. By observing logs and error messages, the attacker can learn details about the configuration of the target application and might be able to cause the target to disclose sensitive information.
  • Padding Oracle Crypto Attack
    An attacker is able to efficiently decrypt data without knowing the decryption key if a target system leaks data on whether or not a padding error happened while decrypting the ciphertext. A target system that leaks this type of information becomes the padding oracle and an attacker is able to make use of that oracle to efficiently decrypt data without knowing the decryption key by issuing on average 128*b calls to the padding oracle (where b is the number of bytes in the ciphertext block). In addition to performing decryption, an attacker is also able to produce valid ciphertexts (i.e., perform encryption) by using the padding oracle, all without knowing the encryption key. Any cryptosystem can be vulnerable to padding oracle attacks if the encrypted messages are not authenticated to ensure their validity prior to decryption, and then the information about padding error is leaked to the attacker. This attack technique may be used, for instance, to break CAPTCHA systems or decrypt/modify state information stored in client side objects (e.g., hidden fields or cookies). This attack technique is a side-channel attack on the cryptosystem that uses a data leak from an improperly implemented decryption routine to completely subvert the cryptosystem. The one bit of information that tells the attacker whether a padding error during decryption has occurred, in whatever form it comes, is sufficient for the attacker to break the cryptosystem. That bit of information can come in a form of an explicit error message about a padding error, a returned blank page, or even the server taking longer to respond (a timing attack). This attack can be launched cross domain where an attacker is able to use cross-domain information leaks to get the bits of information from the padding oracle from a target system / service with which the victim is communicating. To do so an attacker sends a request containing ciphertext to the target system. Due to the browser's same origin policy, the attacker is not able to see the response directly, but can use cross-domain information leak techniques to still get the information needed (i.e., information on whether or not a padding error has occurred). For instance, this can be done using "img" tag plus the onerror()/onload() events. The attacker's JavaScript can make web browsers to load an image on the target site, and know if the image is loaded or not. This is 1-bit information needed for the padding oracle attack to work: if the image is loaded, then it is valid padding, otherwise it is not.
  • Probe Application Error Reporting
    An Attacker, aware of an application's location (and possibly authorized to use the application) can probe the application's structure and evaluate its robustness by probing its error conditions (not unlike one would during a 'fuzz' test, but more purposefully here) in order to support attacks such as blind SQL injection, or for the more general task of mapping the application to mount another subsequent attack.
  • Blind SQL Injection
    Blind SQL Injection results from an insufficient mitigation for SQL Injection. Although suppressing database error messages are considered best practice, the suppression alone is not sufficient to prevent SQL Injection. Blind SQL Injection is a form of SQL Injection that overcomes the lack of error messages. Without the error messages that facilitate SQL Injection, the attacker constructs input strings that probe the target through simple Boolean SQL expressions. The attacker can determine if the syntax and structure of the injection was successful based on whether the query was executed or not. Applied iteratively, the attacker determines how and where the target is vulnerable to SQL Injection. For example, an attacker may try entering something like "username' AND 1=1; --" in an input field. If the result is the same as when the attacker entered "username" in the field, then the attacker knows that the application is vulnerable to SQL Injection. The attacker can then ask yes/no questions from the database server to extract information from it. For example, the attacker can extract table names from a database using the following types of queries: If the above query executes properly, then the attacker knows that the first character in a table name in the database is a letter between m and z. If it doesn't, then the attacker knows that the character must be between a and l (assuming of course that table names only contain alphabetic characters). By performing a binary search on all character positions, the attacker can determine all table names in the database. Subsequently, the attacker may execute an actual attack and send something like:

Nessus

  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-202004-09.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-202004-09 (Chromium, Google Chrome: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Chromium and Google Chrome. Please review the referenced CVE identifiers for details. Impact : A remote attacker could entice a user to open a specially crafted HTML or multimedia file using Chromium or Google Chrome, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition. Workaround : There is no known workaround at this time.
    last seen2020-04-17
    modified2020-04-14
    plugin id135427
    published2020-04-14
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/135427
    titleGLSA-202004-09 : Chromium, Google Chrome: Multiple vulnerabilities
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 202004-09.
#
# The advisory text is Copyright (C) 2001-2020 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include("compat.inc");

if (description)
{
  script_id(135427);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/04/16");

  script_cve_id("CVE-2020-6423", "CVE-2020-6430", "CVE-2020-6431", "CVE-2020-6432", "CVE-2020-6433", "CVE-2020-6434", "CVE-2020-6435", "CVE-2020-6436", "CVE-2020-6437", "CVE-2020-6438", "CVE-2020-6439", "CVE-2020-6440", "CVE-2020-6441", "CVE-2020-6442", "CVE-2020-6443", "CVE-2020-6444", "CVE-2020-6445", "CVE-2020-6446", "CVE-2020-6447", "CVE-2020-6448", "CVE-2020-6450", "CVE-2020-6451", "CVE-2020-6452", "CVE-2020-6454", "CVE-2020-6455", "CVE-2020-6456");
  script_xref(name:"GLSA", value:"202004-09");

  script_name(english:"GLSA-202004-09 : Chromium, Google Chrome: Multiple vulnerabilities");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-202004-09
(Chromium, Google Chrome: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Chromium and Google
      Chrome. Please review the referenced CVE identifiers for details.
  
Impact :

    A remote attacker could entice a user to open a specially crafted HTML
      or multimedia file using Chromium or Google Chrome, possibly resulting in
      execution of arbitrary code with the privileges of the process or a
      Denial of Service condition.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/202004-09"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All Chromium users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose
      '>=www-client/chromium-81.0.4044.92'
    All Google Chrome users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose
      '>=www-client/google-chrome-81.0.4044.92'"
  );
  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:N/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:gentoo:linux:chromium");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:google-chrome");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/04/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/04/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/14");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"www-client/chromium", unaffected:make_list("ge 81.0.4044.92"), vulnerable:make_list("lt 81.0.4044.92"))) flag++;
if (qpkg_check(package:"www-client/google-chrome", unaffected:make_list("ge 81.0.4044.92"), vulnerable:make_list("lt 81.0.4044.92"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:qpkg_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Chromium / Google Chrome");
}
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_6E3B700A7CA311EAB5943065EC8FD3EC.NASL
    descriptionGoogle Chrome Releases reports : This updates includes 32 security fixes, including : - [1019161] High CVE-2020-6454: Use after free in extensions. Reported by Leecraso and Guang Gong of Alpha Lab, Qihoo 360 on 2019-10-29 - [1043446] High CVE-2020-6423: Use after free in audio. Reported by Anonymous on 2020-01-18 - [1059669] High CVE-2020-6455: Out of bounds read in WebSQL. Reported by Nan Wang(@eternalsakura13) and Guang Gong of Alpha Lab, Qihoo 360 on 2020-03-09 - [1031479] Medium CVE-2020-6430: Type Confusion in V8. Reported by Avihay Cohen @ SeraphicAlgorithms on 2019-12-06 - [1040755] Medium CVE-2020-6456: Insufficient validation of untrusted input in clipboard. Reported by Michal Bentkowski of Securitum on 2020-01-10 - [852645] Medium CVE-2020-6431: Insufficient policy enforcement in full screen. Reported by Luan Herrera (@lbherrera_) on 2018-06-14 - [965611] Medium CVE-2020-6432: Insufficient policy enforcement in navigations. Reported by David Erceg on 2019-05-21 - [1043965] Medium CVE-2020-6433: Insufficient policy enforcement in extensions. Reported by David Erceg on 2020-01-21 - [1048555] Medium CVE-2020-6434: Use after free in devtools. Reported by HyungSeok Han (DaramG) of Theori on 2020-02-04 - [1032158] Medium CVE-2020-6435: Insufficient policy enforcement in extensions. Reported by Sergei Glazunov of Google Project Zero on 2019-12-09 - [1034519] Medium CVE-2020-6436: Use after free in window management. Reported by Igor Bukanov from Vivaldi on 2019-12-16 - [639173] Low CVE-2020-6437: Inappropriate implementation in WebView. Reported by Jann Horn on 2016-08-19 - [714617] Low CVE-2020-6438: Insufficient policy enforcement in extensions. Reported by Ng Yik Phang on 2017-04-24 - [868145] Low CVE-2020-6439: Insufficient policy enforcement in navigations. Reported by remkoboonstra on 2018-07-26 - [894477] Low CVE-2020-6440: Inappropriate implementation in extensions. Reported by David Erceg on 2018-10-11 - [959571] Low CVE-2020-6441: Insufficient policy enforcement in omnibox. Reported by David Erceg on 2019-05-04 - [1013906] Low CVE-2020-6442: Inappropriate implementation in cache. Reported by B@rMey on 2019-10-12 - [1040080] Low CVE-2020-6443: Insufficient data validation in developer tools. Reported by @lovasoa (Ophir LOJKINE) on 2020-01-08 - [922882] Low CVE-2020-6444: Uninitialized Use in WebRTC. Reported by mlfbrown on 2019-01-17 - [933171] Low CVE-2020-6445: Insufficient policy enforcement in trusted types. Reported by Jun Kokatsu, Microsoft Browser Vulnerability Research on 2019-02-18 - [933172] Low CVE-2020-6446: Insufficient policy enforcement in trusted types. Reported by Jun Kokatsu, Microsoft Browser Vulnerability Research on 2019-02-18 - [991217] Low CVE-2020-6447: Inappropriate implementation in developer tools. Reported by David Erceg on 2019-08-06 - [1037872] Low CVE-2020-6448: Use after free in V8. Reported by Guang Gong of Alpha Lab, Qihoo 360 on 2019-12-26
    last seen2020-04-16
    modified2020-04-14
    plugin id135425
    published2020-04-14
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/135425
    titleFreeBSD : chromium -- multiple vulnerabilities (6e3b700a-7ca3-11ea-b594-3065ec8fd3ec)
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2020-519.NASL
    descriptionThis update for chromium fixes the following issues : Chromium was updated to 81.0.4044.92 boo#1168911 : - CVE-2020-6454: Use after free in extensions - CVE-2020-6423: Use after free in audio - CVE-2020-6455: Out of bounds read in WebSQL - CVE-2020-6430: Type Confusion in V8 - CVE-2020-6456: Insufficient validation of untrusted input in clipboard - CVE-2020-6431: Insufficient policy enforcement in full screen - CVE-2020-6432: Insufficient policy enforcement in navigations - CVE-2020-6433: Insufficient policy enforcement in extensions - CVE-2020-6434: Use after free in devtools - CVE-2020-6435: Insufficient policy enforcement in extensions - CVE-2020-6436: Use after free in window management - CVE-2020-6437: Inappropriate implementation in WebView - CVE-2020-6438: Insufficient policy enforcement in extensions - CVE-2020-6439: Insufficient policy enforcement in navigations - CVE-2020-6440: Inappropriate implementation in extensions - CVE-2020-6441: Insufficient policy enforcement in omnibox - CVE-2020-6442: Inappropriate implementation in cache - CVE-2020-6443: Insufficient data validation in developer tools - CVE-2020-6444: Uninitialized Use in WebRTC - CVE-2020-6445: Insufficient policy enforcement in trusted types - CVE-2020-6446: Insufficient policy enforcement in trusted types - CVE-2020-6447: Inappropriate implementation in developer tools - CVE-2020-6448: Use after free in V8 Chromium was updated to 80.0.3987.162 boo#1168421 : - CVE-2020-6450: Use after free in WebAudio. - CVE-2020-6451: Use after free in WebAudio. - CVE-2020-6452: Heap buffer overflow in media. - Use a symbolic icon for GNOME
    last seen2020-05-31
    modified2020-04-15
    plugin id135577
    published2020-04-15
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/135577
    titleopenSUSE Security Update : chromium (openSUSE-2020-519)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2020-DA49FBB17C.NASL
    descriptionThe description provided by Fedora was far too silly to endure. Please consult the NIST CVEs for details on these Google Chromium vulnerabilities. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-05-31
    modified2020-05-18
    plugin id136685
    published2020-05-18
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/136685
    titleFedora 31 : chromium (2020-da49fbb17c)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2020-1487.NASL
    descriptionThe remote Redhat Enterprise Linux 6 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2020:1487 advisory. - chromium-browser: Use after free in audio (CVE-2020-6423) - chromium-browser: Type Confusion in V8 (CVE-2020-6430) - chromium-browser: Insufficient policy enforcement in full screen (CVE-2020-6431) - chromium-browser: Insufficient policy enforcement in navigations (CVE-2020-6432, CVE-2020-6439) - chromium-browser: Insufficient policy enforcement in extensions (CVE-2020-6433, CVE-2020-6435, CVE-2020-6438) - chromium-browser: Use after free in devtools (CVE-2020-6434) - chromium-browser: Use after free in window management (CVE-2020-6436) - chromium-browser: Inappropriate implementation in WebView (CVE-2020-6437) - chromium-browser: Inappropriate implementation in extensions (CVE-2020-6440) - chromium-browser: Insufficient policy enforcement in omnibox (CVE-2020-6441) - chromium-browser: Inappropriate implementation in cache (CVE-2020-6442) - chromium-browser: Insufficient data validation in developer tools (CVE-2020-6443) - chromium-browser: Uninitialized use in WebRTC (CVE-2020-6444) - chromium-browser: Insufficient policy enforcement in trusted types (CVE-2020-6445, CVE-2020-6446) - chromium-browser: Inappropriate implementation in developer tools (CVE-2020-6447) - chromium-browser: Use after free in V8 (CVE-2020-6448) - chromium-browser: Use after free in extensions (CVE-2020-6454) - chromium-browser: Out of bounds read in WebSQL (CVE-2020-6455) - chromium-browser: Insufficient validation of untrusted input in clipboard (CVE-2020-6456) Note that Nessus has not tested for this issue but has instead relied only on the application
    last seen2020-06-02
    modified2020-04-16
    plugin id135688
    published2020-04-16
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/135688
    titleRHEL 6 : chromium-browser (RHSA-2020:1487)
  • NASL familyMacOS X Local Security Checks
    NASL idMACOSX_GOOGLE_CHROME_81_0_4044_92.NASL
    descriptionThe version of Google Chrome installed on the remote macOS host is prior to 81.0.4044.92. It is, therefore, affected by multiple vulnerabilities as referenced in the 2020_04_stable-channel-update-for-desktop_7 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application
    last seen2020-04-18
    modified2020-04-10
    plugin id135400
    published2020-04-10
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/135400
    titleGoogle Chrome < 81.0.4044.92 Multiple Vulnerabilities
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2020-0E7F1B663B.NASL
    descriptionAnother day, another chromium update. This one fixes : CVE-2020-6458 CVE-2020-6459 CVE-2020-6460 ---- Fix dependency issue introduced when switching from a
    last seen2020-05-31
    modified2020-05-04
    plugin id136293
    published2020-05-04
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/136293
    titleFedora 30 : chromium (2020-0e7f1b663b)
  • NASL familyWindows
    NASL idGOOGLE_CHROME_81_0_4044_92.NASL
    descriptionThe version of Google Chrome installed on the remote Windows host is prior to 81.0.4044.92. It is, therefore, affected by multiple vulnerabilities as referenced in the 2020_04_stable-channel-update-for-desktop_7 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application
    last seen2020-04-18
    modified2020-04-10
    plugin id135401
    published2020-04-10
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/135401
    titleGoogle Chrome < 81.0.4044.92 Multiple Vulnerabilities

Redhat

rpms
  • chromium-browser-0:81.0.4044.92-2.el6_10
  • chromium-browser-debuginfo-0:81.0.4044.92-2.el6_10

References