ID CVE-2012-4513
Summary khtml/imload/scaledimageplane.h in Konqueror in KDE 4.7.3 allows remote attackers to cause a denial of service (crash) and possibly read memory via large canvas dimensions, which leads to an unexpected sign extension and a heap-based buffer over-read.
References
Vulnerable Configurations
  • cpe:2.3:o:kde:kde:4.7.3
    cpe:2.3:o:kde:kde:4.7.3
CVSS
Base: 6.4 (as of 12-11-2012 - 15:52)
Impact:
Exploitability:
CWE CWE-119
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.
  • Overflow Binary Resource File
    An attack of this type exploits a buffer overflow vulnerability in the handling of binary resources. Binary resources may include music files like MP3, image files like JPEG files, and any other binary file. These attacks may pass unnoticed to the client machine through normal usage of files, such as a browser loading a seemingly innocent JPEG file. This can allow the attacker access to the execution stack and execute arbitrary code in the target process. This attack pattern is a variant of standard buffer overflow attacks using an unexpected vector (binary files) to wrap its attack and open up a new attack vector. The attacker is required to either directly serve the binary content to the victim, or place it in a locale like a MP3 sharing application, for the victim to download. The attacker then is notified upon the download or otherwise locates the vulnerability opened up by the buffer overflow.
  • Buffer Overflow via Symbolic Links
    This type of attack leverages the use of symbolic links to cause buffer overflows. An attacker can try to create or manipulate a symbolic link file such that its contents result in out of bounds data. When the target software processes the symbolic link file, it could potentially overflow internal buffers with insufficient bounds checking.
  • Overflow Variables and Tags
    This type of attack leverages the use of tags or variables from a formatted configuration data to cause buffer overflow. The attacker crafts a malicious HTML page or configuration file that includes oversized strings, thus causing an overflow.
  • Buffer Overflow via Parameter Expansion
    In this attack, the target software is given input that the attacker knows will be modified and expanded in size during processing. This attack relies on the target software failing to anticipate that the expanded data may exceed some internal limit, thereby creating a buffer overflow.
  • Buffer Overflow in an API Call
    This attack targets libraries or shared code modules which are vulnerable to buffer overflow attacks. An attacker who has access to an API may try to embed malicious code in the API function call and exploit a buffer overflow vulnerability in the function's implementation. All clients that make use of the code library thus become vulnerable by association. This has a very broad effect on security across a system, usually affecting more than one software process.
  • Buffer Overflow in Local Command-Line Utilities
    This attack targets command-line utilities available in a number of shells. An attacker can leverage a vulnerability found in a command-line utility to escalate privilege to root.
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL NONE PARTIAL
exploit-db via4
description Konqueror 4.7.3 Memory Corruption. CVE-2012-4512,CVE-2012-4513,CVE-2012-4514,CVE-2012-4515. Dos exploit for linux platform
id EDB-ID:22406
last seen 2016-02-02
modified 2012-11-01
published 2012-11-01
reporter Tim Brown
source https://www.exploit-db.com/download/22406/
title Konqueror 4.7.3 Memory Corruption
nessus via4
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2012-1416.NASL
    description From Red Hat Security Advisory 2012:1416 : Updated kdelibs packages that fix two security issues are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having critical security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kdelibs packages provide libraries for the K Desktop Environment (KDE). Konqueror is a web browser. A heap-based buffer overflow flaw was found in the way the CSS (Cascading Style Sheets) parser in kdelibs parsed the location of the source for font faces. A web page containing malicious content could cause an application using kdelibs (such as Konqueror) to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2012-4512) A heap-based buffer over-read flaw was found in the way kdelibs calculated canvas dimensions for large images. A web page containing malicious content could cause an application using kdelibs to crash or disclose portions of its memory. (CVE-2012-4513) Users should upgrade to these updated packages, which contain backported patches to correct these issues. The desktop must be restarted (log out, then log back in) for this update to take effect.
    last seen 2019-02-21
    modified 2018-07-18
    plugin id 68649
    published 2013-07-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=68649
    title Oracle Linux 6 : kdelibs (ELSA-2012-1416)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_11_KDELIBS4-130930.NASL
    description This kdelibs4 update fixes several security issues related to khtml/konqueror. - Fix security issues and NULL pointer references in khtml/konqueror (bnc#787520) (CVE-2012-4512 / CVE-2012-4513 / CVE-2012-4515)
    last seen 2019-02-21
    modified 2014-08-20
    plugin id 70632
    published 2013-10-25
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=70632
    title SuSE 11.2 / 11.3 Security Update : kdelibs4 (SAT Patch Numbers 8401 / 8402)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2012-1416.NASL
    description Updated kdelibs packages that fix two security issues are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having critical security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kdelibs packages provide libraries for the K Desktop Environment (KDE). Konqueror is a web browser. A heap-based buffer overflow flaw was found in the way the CSS (Cascading Style Sheets) parser in kdelibs parsed the location of the source for font faces. A web page containing malicious content could cause an application using kdelibs (such as Konqueror) to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2012-4512) A heap-based buffer over-read flaw was found in the way kdelibs calculated canvas dimensions for large images. A web page containing malicious content could cause an application using kdelibs to crash or disclose portions of its memory. (CVE-2012-4513) Users should upgrade to these updated packages, which contain backported patches to correct these issues. The desktop must be restarted (log out, then log back in) for this update to take effect.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 67095
    published 2013-06-29
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=67095
    title CentOS 6 : kdelibs (CESA-2012:1416)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2012-1418.NASL
    description Updated kdelibs packages that fix two security issues are now available for Red Hat Enterprise Linux 6 FasTrack. The Red Hat Security Response Team has rated this update as having critical security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kdelibs packages provide libraries for the K Desktop Environment (KDE). Konqueror is a web browser. A heap-based buffer overflow flaw was found in the way the CSS (Cascading Style Sheets) parser in kdelibs parsed the location of the source for font faces. A web page containing malicious content could cause an application using kdelibs (such as Konqueror) to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2012-4512) A heap-based buffer over-read flaw was found in the way kdelibs calculated canvas dimensions for large images. A web page containing malicious content could cause an application using kdelibs to crash or disclose portions of its memory. (CVE-2012-4513) Users should upgrade to these updated packages, which contain backported patches to correct these issues. The desktop must be restarted (log out, then log back in) for this update to take effect.
    last seen 2019-02-21
    modified 2018-12-20
    plugin id 62764
    published 2012-10-31
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=62764
    title CentOS 6 : kdelibs (CESA-2012:1418)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2012-1416.NASL
    description Updated kdelibs packages that fix two security issues are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having critical security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kdelibs packages provide libraries for the K Desktop Environment (KDE). Konqueror is a web browser. A heap-based buffer overflow flaw was found in the way the CSS (Cascading Style Sheets) parser in kdelibs parsed the location of the source for font faces. A web page containing malicious content could cause an application using kdelibs (such as Konqueror) to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2012-4512) A heap-based buffer over-read flaw was found in the way kdelibs calculated canvas dimensions for large images. A web page containing malicious content could cause an application using kdelibs to crash or disclose portions of its memory. (CVE-2012-4513) Users should upgrade to these updated packages, which contain backported patches to correct these issues. The desktop must be restarted (log out, then log back in) for this update to take effect.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 62771
    published 2012-10-31
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=62771
    title RHEL 6 : kdelibs (RHSA-2012:1416)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2012-815.NASL
    description This update of kdelibs fixed various memory corruption vulnerabilities. On openSUSE 12.1 a akregator crash on closing tab was fixed.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 74823
    published 2014-06-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=74823
    title openSUSE Security Update : kdelibs4 (openSUSE-SU-2012:1581-1)
  • NASL family Gentoo Local Security Checks
    NASL id GENTOO_GLSA-201406-31.NASL
    description The remote host is affected by the vulnerability described in GLSA-201406-31 (Konqueror: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Konqueror. Please review the CVE identifiers referenced below for details. Impact : A remote attacker could entice a user to open a specially crafted web site using Konqueror, possibly resulting in the 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 seen 2019-02-21
    modified 2015-04-13
    plugin id 76288
    published 2014-06-28
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=76288
    title GLSA-201406-31 : Konqueror: Multiple vulnerabilities
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20121030_KDELIBS_ON_SL6_X.NASL
    description A heap-based buffer over-read flaw was found in the way kdelibs calculated canvas dimensions for large images. A web page containing malicious content could cause an application using kdelibs to crash or disclose portions of its memory. (CVE-2012-4513) The desktop must be restarted (log out, then log back in) for this update to take effect.
    last seen 2019-02-21
    modified 2018-12-31
    plugin id 62775
    published 2012-10-31
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=62775
    title Scientific Linux Security Update : kdelibs on SL6.x i386/x86_64
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2012-1418.NASL
    description From Red Hat Security Advisory 2012:1418 : Updated kdelibs packages that fix two security issues are now available for Red Hat Enterprise Linux 6 FasTrack. The Red Hat Security Response Team has rated this update as having critical security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kdelibs packages provide libraries for the K Desktop Environment (KDE). Konqueror is a web browser. A heap-based buffer overflow flaw was found in the way the CSS (Cascading Style Sheets) parser in kdelibs parsed the location of the source for font faces. A web page containing malicious content could cause an application using kdelibs (such as Konqueror) to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2012-4512) A heap-based buffer over-read flaw was found in the way kdelibs calculated canvas dimensions for large images. A web page containing malicious content could cause an application using kdelibs to crash or disclose portions of its memory. (CVE-2012-4513) Users should upgrade to these updated packages, which contain backported patches to correct these issues. The desktop must be restarted (log out, then log back in) for this update to take effect.
    last seen 2019-02-21
    modified 2018-12-20
    plugin id 68650
    published 2013-07-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=68650
    title Oracle Linux 6 : kdelibs (ELSA-2012-1418)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2012-1418.NASL
    description Updated kdelibs packages that fix two security issues are now available for Red Hat Enterprise Linux 6 FasTrack. The Red Hat Security Response Team has rated this update as having critical security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kdelibs packages provide libraries for the K Desktop Environment (KDE). Konqueror is a web browser. A heap-based buffer overflow flaw was found in the way the CSS (Cascading Style Sheets) parser in kdelibs parsed the location of the source for font faces. A web page containing malicious content could cause an application using kdelibs (such as Konqueror) to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2012-4512) A heap-based buffer over-read flaw was found in the way kdelibs calculated canvas dimensions for large images. A web page containing malicious content could cause an application using kdelibs to crash or disclose portions of its memory. (CVE-2012-4513) Users should upgrade to these updated packages, which contain backported patches to correct these issues. The desktop must be restarted (log out, then log back in) for this update to take effect.
    last seen 2019-02-21
    modified 2014-05-02
    plugin id 62772
    published 2012-10-31
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=62772
    title RHEL 6 : kdelibs (RHSA-2012:1418)
packetstorm via4
data source https://packetstormsecurity.com/files/download/117774/NDSA20121010.txt
id PACKETSTORM:117774
last seen 2016-12-05
published 2012-10-31
reporter Tim Brown
source https://packetstormsecurity.com/files/117774/Konqueror-4.7.3-Memory-Corruption.html
title Konqueror 4.7.3 Memory Corruption
redhat via4
advisories
  • bugzilla
    id 865779
    title CVE-2012-4512 kdelibs: Heap-based buffer overflow when parsing location of a font face source
    oval
    AND
    • OR
      • comment Red Hat Enterprise Linux 6 Client is installed
        oval oval:com.redhat.rhba:tst:20111656001
      • comment Red Hat Enterprise Linux 6 Server is installed
        oval oval:com.redhat.rhba:tst:20111656002
      • comment Red Hat Enterprise Linux 6 Workstation is installed
        oval oval:com.redhat.rhba:tst:20111656003
      • comment Red Hat Enterprise Linux 6 ComputeNode is installed
        oval oval:com.redhat.rhba:tst:20111656004
    • OR
      • AND
        • comment kdelibs is earlier than 6:4.3.4-14.el6_3.2
          oval oval:com.redhat.rhsa:tst:20121416005
        • comment kdelibs is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20110464006
      • AND
        • comment kdelibs-apidocs is earlier than 6:4.3.4-14.el6_3.2
          oval oval:com.redhat.rhsa:tst:20121416007
        • comment kdelibs-apidocs is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20110464010
      • AND
        • comment kdelibs-common is earlier than 6:4.3.4-14.el6_3.2
          oval oval:com.redhat.rhsa:tst:20121416011
        • comment kdelibs-common is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20110464008
      • AND
        • comment kdelibs-devel is earlier than 6:4.3.4-14.el6_3.2
          oval oval:com.redhat.rhsa:tst:20121416009
        • comment kdelibs-devel is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20110464012
    rhsa
    id RHSA-2012:1416
    released 2012-10-30
    severity Critical
    title RHSA-2012:1416: kdelibs security update (Critical)
  • rhsa
    id RHSA-2012:1418
rpms
  • kdelibs-6:4.3.4-14.el6_3.2
  • kdelibs-apidocs-6:4.3.4-14.el6_3.2
  • kdelibs-common-6:4.3.4-14.el6_3.2
  • kdelibs-devel-6:4.3.4-14.el6_3.2
refmap via4
bugtraq 20121030 Medium risk security flaws in Konqueror
confirm http://quickgit.kde.org/index.php?p=kdelibs.git&a=commitdiff&h=1f8b1b034ccf1713a5d123a4c327290f86d17d53
misc http://www.nth-dimension.org.uk/pub/NDSA20121010.txt.asc
mlist
  • [oss-security] 20121011 Re: Pre-advisory for Konqueror 4.7.3 (other versions may be affected)
  • [oss-security] 20121030 Medium risk security flaws in Konqueror
sectrack 1027709
secunia
  • 51097
  • 51145
Last major update 12-11-2012 - 15:57
Published 11-11-2012 - 08:00
Back to Top