7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.871 High
EPSS
Percentile
98.6%
Daniel Wachdorf reported two problems in the MIT krb5 distribution used for network authentication. First, the KDC program from the krb5-kdc package can corrupt the heap by trying to free memory which has already been freed on receipt of a certain TCP connection. This vulnerability can cause the KDC to crash, leading to a denial of service. [ CAN-2005-1174] Second, under certain rare circumstances this type of request can lead to a buffer overflow and remote code execution. [ CAN-2005-1175]
Additionally, Magnus Hagander reported another problem in which the krb5_recvauth function can in certain circumstances free previously freed memory, potentially leading to the execution of remote code. [ CAN-2005-1689]
All of these vulnerabilities are believed difficult to exploit, and no exploits have yet been discovered.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DSA-757. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(19219);
script_version("1.22");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
script_cve_id("CVE-2005-1174", "CVE-2005-1175", "CVE-2005-1689");
script_xref(name:"CERT", value:"259798");
script_xref(name:"CERT", value:"623332");
script_xref(name:"CERT", value:"885830");
script_xref(name:"DSA", value:"757");
script_name(english:"Debian DSA-757-1 : krb5 - buffer overflow, double-free memory");
script_summary(english:"Checks dpkg output for the updated package");
script_set_attribute(
attribute:"synopsis",
value:"The remote Debian host is missing a security-related update."
);
script_set_attribute(
attribute:"description",
value:
"Daniel Wachdorf reported two problems in the MIT krb5 distribution
used for network authentication. First, the KDC program from the
krb5-kdc package can corrupt the heap by trying to free memory which
has already been freed on receipt of a certain TCP connection. This
vulnerability can cause the KDC to crash, leading to a denial of
service. [ CAN-2005-1174] Second, under certain rare circumstances
this type of request can lead to a buffer overflow and remote code
execution. [ CAN-2005-1175]
Additionally, Magnus Hagander reported another problem in which the
krb5_recvauth function can in certain circumstances free previously
freed memory, potentially leading to the execution of remote code. [
CAN-2005-1689]
All of these vulnerabilities are believed difficult to exploit, and no
exploits have yet been discovered."
);
script_set_attribute(
attribute:"see_also",
value:"http://www.debian.org/security/2005/dsa-757"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the krb5 package.
For the old stable distribution (woody), these problems have been
fixed in version 1.2.4-5woody10. Note that woody's KDC does not have
TCP support and is not vulnerable to CAN-2005-1174.
For the stable distribution (sarge), these problems have been fixed in
version 1.3.6-2sarge2."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_cwe_id(119);
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:krb5");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.0");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.1");
script_set_attribute(attribute:"patch_publication_date", value:"2005/07/17");
script_set_attribute(attribute:"plugin_publication_date", value:"2005/07/18");
script_set_attribute(attribute:"vuln_publication_date", value:"2005/07/12");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2005-2021 Tenable Network Security, Inc.");
script_family(english:"Debian Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
exit(0);
}
include("audit.inc");
include("debian_package.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (deb_check(release:"3.0", prefix:"krb5-admin-server", reference:"1.2.4-5woody10")) flag++;
if (deb_check(release:"3.0", prefix:"krb5-clients", reference:"1.2.4-5woody10")) flag++;
if (deb_check(release:"3.0", prefix:"krb5-doc", reference:"1.2.4-5woody10")) flag++;
if (deb_check(release:"3.0", prefix:"krb5-ftpd", reference:"1.2.4-5woody10")) flag++;
if (deb_check(release:"3.0", prefix:"krb5-kdc", reference:"1.2.4-5woody10")) flag++;
if (deb_check(release:"3.0", prefix:"krb5-rsh-server", reference:"1.2.4-5woody10")) flag++;
if (deb_check(release:"3.0", prefix:"krb5-telnetd", reference:"1.2.4-5woody10")) flag++;
if (deb_check(release:"3.0", prefix:"krb5-user", reference:"1.2.4-5woody10")) flag++;
if (deb_check(release:"3.0", prefix:"libkadm55", reference:"1.2.4-5woody10")) flag++;
if (deb_check(release:"3.0", prefix:"libkrb5-dev", reference:"1.2.4-5woody10")) flag++;
if (deb_check(release:"3.0", prefix:"libkrb53", reference:"1.2.4-5woody10")) flag++;
if (deb_check(release:"3.1", prefix:"krb5-admin-server", reference:"1.3.6-2sarge2")) flag++;
if (deb_check(release:"3.1", prefix:"krb5-clients", reference:"1.3.6-2sarge2")) flag++;
if (deb_check(release:"3.1", prefix:"krb5-doc", reference:"1.3.6-2sarge2")) flag++;
if (deb_check(release:"3.1", prefix:"krb5-ftpd", reference:"1.3.6-2sarge2")) flag++;
if (deb_check(release:"3.1", prefix:"krb5-kdc", reference:"1.3.6-2sarge2")) flag++;
if (deb_check(release:"3.1", prefix:"krb5-rsh-server", reference:"1.3.6-2sarge2")) flag++;
if (deb_check(release:"3.1", prefix:"krb5-telnetd", reference:"1.3.6-2sarge2")) flag++;
if (deb_check(release:"3.1", prefix:"krb5-user", reference:"1.3.6-2sarge2")) flag++;
if (deb_check(release:"3.1", prefix:"libkadm55", reference:"1.3.6-2sarge2")) flag++;
if (deb_check(release:"3.1", prefix:"libkrb5-dev", reference:"1.3.6-2sarge2")) flag++;
if (deb_check(release:"3.1", prefix:"libkrb53", reference:"1.3.6-2sarge2")) flag++;
if (flag)
{
if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
else security_hole(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | krb5 | p-cpe:/a:debian:debian_linux:krb5 |
debian | debian_linux | 3.0 | cpe:/o:debian:debian_linux:3.0 |
debian | debian_linux | 3.1 | cpe:/o:debian:debian_linux:3.1 |
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.871 High
EPSS
Percentile
98.6%