Vulnerabilities > CVE-2004-1628 - USE of Externally-Controlled Format String vulnerability in Pizzashack Rssh

047910
CVSS 9.0 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
SINGLE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
low complexity
pizzashack
CWE-134
critical
nessus
NVD
Published: 2004-10-23
Updated: 2020-12-08

Summary

Format string vulnerability in log.c in rssh before 2.2.2 allows remote authenticated users to execute arbitrary code.

Vulnerable Configurations

Part Description Count
Application
Pizzashack
8

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Format String Injection
    An attacker includes formatting characters in a string input field on the target application. Most applications assume that users will provide static text and may respond unpredictably to the presence of formatting character. For example, in certain functions of the C programming languages such as printf, the formatting character %s will print the contents of a memory location expecting this location to identify a string and the formatting character %n prints the number of DWORD written in the memory. An attacker can use this to read or write to memory locations or files, or simply to manipulate the value of the resulting text in unexpected ways. Reading or writing memory may result in program crashes and writing memory could result in the execution of arbitrary code if the attacker can write to the program stack.
  • String Format Overflow in syslog()
    This attack targets the format string vulnerabilities in the syslog() function. An attacker would typically inject malicious input in the format string parameter of the syslog function. This is a common problem, and many public vulnerabilities and associated exploits have been posted.

Nessus

NASL familyGentoo Local Security Checks
NASL idGENTOO_GLSA-200410-28.NASL
descriptionThe remote host is affected by the vulnerability described in GLSA-200410-28 (rssh: Format string vulnerability) Florian Schilhabel from the Gentoo Linux Security Audit Team found a format string vulnerability in rssh syslogging of failed commands. Impact : Using a malicious command, it may be possible for a remote authenticated user to execute arbitrary code on the target machine with user rights, effectively bypassing any restriction of rssh. Workaround : There is no known workaround at this time.
last seen2020-06-01
modified2020-06-02
plugin id15580
published2004-10-28
reporterThis script is Copyright (C) 2004-2019 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/15580
titleGLSA-200410-28 : rssh: Format string vulnerability
code
#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 200410-28.
#
# The advisory text is Copyright (C) 2001-2015 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include("compat.inc");

if (description)
{
  script_id(15580);
  script_version("1.14");
  script_cvs_date("Date: 2019/08/02 13:32:41");

  script_cve_id("CVE-2004-1628");
  script_xref(name:"GLSA", value:"200410-28");

  script_name(english:"GLSA-200410-28 : rssh: Format string vulnerability");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-200410-28
(rssh: Format string vulnerability)

    Florian Schilhabel from the Gentoo Linux Security Audit Team found a
    format string vulnerability in rssh syslogging of failed commands.
  
Impact :

    Using a malicious command, it may be possible for a remote
    authenticated user to execute arbitrary code on the target machine with
    user rights, effectively bypassing any restriction of rssh.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.pizzashack.org/rssh/security.shtml"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200410-28"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All rssh users should upgrade to the latest version:
    # emerge --sync
    # emerge --ask --oneshot --verbose '>=app-shells/rssh-2.2.2'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:rssh");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2004/10/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/10/28");
  script_set_attribute(attribute:"vuln_publication_date", value:"2004/10/23");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2019 Tenable Network Security, Inc.");
  script_family(english:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


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

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"app-shells/rssh", unaffected:make_list("ge 2.2.2"), vulnerable:make_list("lt 2.2.2"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "rssh");
}

References