Vulnerabilities > CVE-2002-1200 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in Oneidentity Syslog-Ng

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
low complexity
oneidentity
CWE-119
nessus
NVD
Published: 2002-10-28
Updated: 2020-05-19

Summary

Balabit Syslog-NG 1.4.x before 1.4.15, and 1.5.x before 1.5.20, when using template filenames or output, does not properly track the size of a buffer when constant characters are encountered during macro expansion, which allows remote attackers to cause a denial of service and possibly execute arbitrary code.

Vulnerable Configurations

Part Description Count
Application
Oneidentity
8

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 familyDebian Local Security Checks
NASL idDEBIAN_DSA-175.NASL
descriptionBalazs Scheidler discovered a problem in the way syslog-ng handles macro expansion. When a macro is expanded a static length buffer is used accompanied by a counter. However, when constant characters are appended, the counter is not updated properly, leading to incorrect boundary checking. An attacker may be able to use specially crafted log messages inserted via UDP which overflows the buffer.
last seen2020-06-01
modified2020-06-02
plugin id15012
published2004-09-29
reporterThis script is Copyright (C) 2004-2019 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/15012
titleDebian DSA-175-1 : syslog-ng - buffer overflow

References