Vulnerabilities > CVE-2007-4621 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in IBM AIX 5.2

047910
CVSS 0.0 - NONE
Attack vector
UNKNOWN
Attack complexity
UNKNOWN
Privileges required
UNKNOWN
Confidentiality impact
UNKNOWN
Integrity impact
UNKNOWN
Availability impact
UNKNOWN
ibm
CWE-119
nessus

Summary

Buffer overflow in crontab in IBM AIX 5.2 allows local users to gain privileges via long command line arguments.

Vulnerable Configurations

Part Description Count
OS
Ibm
1

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 familyAIX Local Security Checks
NASL idAIX_U812104.NASL
descriptionThe remote host is missing AIX PTF U812104, which is related to the security of the package bos.rte.cron.
last seen2020-06-01
modified2020-06-02
plugin id29019
published2007-12-03
reporterThis script is Copyright (C) 2007-2019 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/29019
titleAIX 5.2 TL 10 : bos.rte.cron (U812104)
code
#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were extracted
# from AIX Security PTF U812104. The text itself is copyright (C)
# International Business Machines Corp.
#

include("compat.inc");

if (description)
{
  script_id(29019);
  script_version ("1.5");
  script_cvs_date("Date: 2019/09/16 14:12:48");

  script_cve_id("CVE-2007-4621");

  script_name(english:"AIX 5.2 TL 10 : bos.rte.cron (U812104)");
  script_summary(english:"Check for PTF U812104");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote AIX host is missing a vendor-supplied security patch."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is missing AIX PTF U812104, which is related to the
security of the package bos.rte.cron."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www-01.ibm.com/support/docview.wss?uid=isg1IZ04832"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Install the appropriate missing security-related fix."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_cwe_id(119);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:ibm:aix:5.2");

  script_set_attribute(attribute:"vuln_publication_date", value:"2007/09/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2007/09/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/12/03");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2007-2019 Tenable Network Security, Inc.");
  script_family(english:"AIX Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AIX/oslevel", "Host/AIX/version", "Host/AIX/lslpp");

  exit(0);
}



include("audit.inc");
include("global_settings.inc");
include("aix.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if ( ! get_kb_item("Host/AIX/version") ) audit(AUDIT_OS_NOT, "AIX");
if ( ! get_kb_item("Host/AIX/lslpp") ) audit(AUDIT_PACKAGE_LIST_MISSING);

flag = 0;

if ( aix_check_patch(ml:"520010", patch:"U812104", package:"bos.rte.cron.5.2.0.106") < 0 ) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:aix_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

Seebug

bulletinFamilyexploit
descriptionBUGTRAQ ID: 26263 CVE(CAN) ID: CVE-2007-4621 IBM AIX是一款商业性质的UNIX操作系统。 IBM AIX的crontab程序的主函数中存在缓冲区溢出漏洞,本地攻击者可能利用此漏洞提升权限。 在处理命令行参数时,crontab程序未经执行边界检查便将用户提供的参数拷贝到了固定大小的BSS缓冲区,因此攻击者可以覆盖BSS内存区域中所存储的大部分数据,导致以root权限执行任意指令。 IBM AIX 5.2 临时解决方法: * 删除crontab程序的set-uid位。 厂商补丁: IBM --- 目前厂商已经发布了升级补丁以修复这个安全问题,请到厂商的主页下载: <a href="ftp://aix.software.ibm.com/aix/efixes/security/crontab_ifix.tar" target="_blank">ftp://aix.software.ibm.com/aix/efixes/security/crontab_ifix.tar</a> <a href="http://www.ibm.com/support/docview.wss?uid=isg1IZ04832" target="_blank">http://www.ibm.com/support/docview.wss?uid=isg1IZ04832</a>
idSSV:2372
last seen2017-11-19
modified2007-11-01
published2007-11-01
reporterRoot
titleIBM AIX Crontab本地权限提升漏洞