CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS
Percentile
77.3%
The remote SSH server is version 1.2.27 or earlier.
If this version was compiled against the RSAREF library, then it is likely to be vulnerable to a buffer overflow that a remote attacker could exploit to gain root privileges on the affected system.
To determine if you compiled ssh against the RSAREF library, type ‘ssh
-V’ on the remote host.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(10269);
script_version("1.34");
script_cvs_date("Date: 2018/11/15 20:50:24");
script_cve_id("CVE-1999-0834");
script_bugtraq_id(843);
script_name(english:"SSH RSAREF Library Multiple Functions Local Overflow");
script_summary(english:"Checks for the remote SSH version");
script_set_attribute(attribute:"synopsis", value:"The remote SSH server may allow execution of arbitrary code.");
script_set_attribute(attribute:"description", value:
"The remote SSH server is version 1.2.27 or earlier.
If this version was compiled against the RSAREF library, then it is
likely to be vulnerable to a buffer overflow that a remote attacker
could exploit to gain root privileges on the affected system.
To determine if you compiled ssh against the RSAREF library, type 'ssh
-V' on the remote host.");
script_set_attribute(attribute:"see_also", value:"https://seclists.org/bugtraq/1999/Dec/22");
script_set_attribute(attribute:"solution", value:
"Either re-compile ssh to avoid using the RSAREF library or upgrade to
SSH 2.x or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"1999/12/01");
script_set_attribute(attribute:"plugin_publication_date", value:"1999/11/11");
script_set_attribute(attribute:"potential_vulnerability", value:"true");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 1999-2018 Tenable Network Security, Inc.");
script_family(english:"Misc.");
script_dependencie("ssh_detect.nasl");
script_require_keys("Settings/ParanoidReport");
script_require_ports("Services/ssh", 22);
exit(0);
}
include("audit.inc");
include("backport.inc");
include("global_settings.inc");
if (report_paranoia < 2) audit(AUDIT_PARANOID);
port = get_kb_item("Services/ssh");
if(!port)port = 22;
banner = get_kb_item("SSH/banner/" + port );
if ( ! banner ) exit(0);
banner = get_backport_banner(banner:banner);
if ( "openssh" >< tolower(banner) ) exit(0);
if(ereg(string:banner, pattern:"SSH-.*-1\.([0-1]|2\.([0-1]..*|2[0-7]))[^0-9]*$", icase:TRUE))security_hole(port);