Vulnerabilities > CVE-2001-0191 - Classic Buffer Overflow vulnerability in Andynorman Gnuserv

047910
CVSS 0.0 - NONE
Attack vector
UNKNOWN
Attack complexity
UNKNOWN
Privileges required
UNKNOWN
Confidentiality impact
UNKNOWN
Integrity impact
UNKNOWN
Availability impact
UNKNOWN
andynorman
CWE-120
nessus
NVD
Published: 2001-05-03
Updated: 2024-11-20

Summary

gnuserv before 3.12, as shipped with XEmacs, does not properly check the specified length of an X Windows MIT-MAGIC-COOKIE cookie, which allows remote attackers to execute arbitrary commands via a buffer overflow, or brute force authentication by using a short cookie length.

Vulnerable Configurations

Part Description Count
Application
Andynorman
1
Application
Gnu
1

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 familyMandriva Local Security Checks
NASL idMANDRAKE_MDKSA-2001-019.NASL
descriptionPrevious versions of XEmacs had a problem with the gnuserv application. Versions prior to 21.1.14 could allow arbitrary code to be executed by overrunning the magic cookie buffer, as well as accepting the prefix of valid magic cookies (i.e.
last seen2020-06-01
modified2020-06-02
plugin id61893
published2012-09-06
reporterThis script is Copyright (C) 2012-2019 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/61893
titleMandrake Linux Security Advisory : xemacs (MDKSA-2001:019)

Redhat

advisories
  • rhsa
    idRHSA-2001:010
  • rhsa
    idRHSA-2001:011

References