Vulnerabilities > CVE-2011-4062 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in Freebsd

047910
CVSS 7.2 - HIGH
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
local
low complexity
freebsd
CWE-119
nessus
exploit available

Summary

Buffer overflow in the kernel in FreeBSD 7.3 through 9.0-RC1 allows local users to cause a denial of service (panic) or possibly gain privileges via a bind system call with a long pathname for a UNIX socket.

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.

Exploit-Db

descriptionFreeBSD UIPC socket heap Overflow proof-of-concept. CVE-2011-3633,CVE-2011-4062. Dos exploit for freebsd platform
fileexploits/freebsd/dos/17908.sh
idEDB-ID:17908
last seen2016-02-02
modified2011-09-30
platformfreebsd
port
published2011-09-30
reporterShaun Colley
sourcehttps://www.exploit-db.com/download/17908/
titleFreeBSD UIPC socket heap Overflow proof-of-concept
typedos

Nessus

  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-2325.NASL
    descriptionBuffer overflow in the
    last seen2020-03-17
    modified2011-10-24
    plugin id56586
    published2011-10-24
    reporterThis script is Copyright (C) 2011-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/56586
    titleDebian DSA-2325-1 : kfreebsd-8 - privilege escalation/denial of service
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_DDOS_PRIV.NASL
    descriptionBuffer overflow in the
    last seen2020-06-01
    modified2020-06-02
    plugin id110559
    published2018-06-15
    reporterThis script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/110559
    titleFreeBSD 7.3 to 9.0-RC1 privilege escalation/denial of service