Vulnerabilities > CVE-2012-3501 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Darold Squidclamav

047910
CVSS 0.0 - NONE
Attack vector
UNKNOWN
Attack complexity
UNKNOWN
Privileges required
UNKNOWN
Confidentiality impact
UNKNOWN
Integrity impact
UNKNOWN
Availability impact
UNKNOWN
darold
CWE-119
nessus
NVD
Published: 2012-08-25
Updated: 2024-11-21

Summary

The squidclamav_check_preview_handler function in squidclamav.c in SquidClamav 5.x before 5.8 and 6.x before 6.7 passes an unescaped URL to a system command call, which allows remote attackers to cause a denial of service (daemon crash) via a URL with certain characters, as demonstrated using %0D or %0A.

Vulnerable Configurations

Part Description Count
Application
Darold
15

Common Weakness Enumeration (CWE)

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 familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201209-08.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201209-08 (SquidClamav: Denial of Service) SquidClamav does not properly escape URLs before passing them to the system command call. Impact : A remote attacker could send a specially crafted URL to SquidClamav, possibly resulting in a Denial of Service condition. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id62289
    published2012-09-25
    reporterThis script is Copyright (C) 2012-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/62289
    titleGLSA-201209-08 : SquidClamav: Denial of Service
  • NASL familyCGI abuses
    NASL idSQUIDCLAMAV_6_7_DOS.NASL
    descriptionThe version of SquidClamav installed on the remote host is affected by a remote denial of service (DoS) vulnerability because it fails to properly escape URL
    last seen2020-06-01
    modified2020-06-02
    plugin id62031
    published2012-09-10
    reporterThis script is Copyright (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/62031
    titleSquidClamav Specially Crafted Character Parsing Remote DoS
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_8DEFA0F9EE8A11E18BD80022156E8794.NASL
    descriptionSquidClamav developers report : Add a workaround for a squidGuard bug that unescape the URL and send it back unescaped. This result in garbage staying into pipe of the system command call and could crash squidclamav on next read or return false information. This is specially true with URL containing the %0D or %0A character. This vulnerability can be triggered only in configurations where external chained URL checker is configured via
    last seen2020-06-01
    modified2020-06-02
    plugin id61675
    published2012-08-27
    reporterThis script is Copyright (C) 2012-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/61675
    titleFreeBSD : squidclamav -- Denial of Service (8defa0f9-ee8a-11e1-8bd8-0022156e8794)

References