CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS
Percentile
81.3%
Several local vulnerabilities have been discovered in libicu, International Components for Unicode, The Common Vulnerabilities and Exposures project identifies the following problems :
CVE-2007-4770 libicu in International Components for Unicode (ICU) 3.8.1 and earlier attempts to process backreferences to the nonexistent capture group zero (aka \0), which might allow context-dependent attackers to read from, or write to, out-of-bounds memory locations, related to corruption of REStackFrames.
CVE-2007-4771 Heap-based buffer overflow in the doInterval function in regexcmp.cpp in libicu in International Components for Unicode (ICU) 3.8.1 and earlier allows context-dependent attackers to cause a denial of service (memory consumption) and possibly have unspecified other impact via a regular expression that writes a large amount of data to the backtracking stack.
#%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-1511. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(31358);
script_version("1.17");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
script_bugtraq_id(27455);
script_xref(name:"DSA", value:"1511");
script_name(english:"Debian DSA-1511-1 : libicu - various");
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:
"Several local vulnerabilities have been discovered in libicu,
International Components for Unicode, The Common Vulnerabilities and
Exposures project identifies the following problems :
- CVE-2007-4770
libicu in International Components for Unicode (ICU)
3.8.1 and earlier attempts to process backreferences to
the nonexistent capture group zero (aka \0), which might
allow context-dependent attackers to read from, or write
to, out-of-bounds memory locations, related to
corruption of REStackFrames.
- CVE-2007-4771
Heap-based buffer overflow in the doInterval function in
regexcmp.cpp in libicu in International Components for
Unicode (ICU) 3.8.1 and earlier allows context-dependent
attackers to cause a denial of service (memory
consumption) and possibly have unspecified other impact
via a regular expression that writes a large amount of
data to the backtracking stack."
);
script_set_attribute(
attribute:"see_also",
value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=463688"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2007-4770"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2007-4771"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2008/dsa-1511"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the libicu package.
For the stable distribution (etch), these problems have been fixed in
version 3.6-2etch1."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:ND/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libicu");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:4.0");
script_set_attribute(attribute:"patch_publication_date", value:"2008/03/03");
script_set_attribute(attribute:"plugin_publication_date", value:"2008/03/07");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2008-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
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:"4.0", prefix:"icu-doc", reference:"3.6-2etch1")) flag++;
if (deb_check(release:"4.0", prefix:"libicu36", reference:"3.6-2etch1")) flag++;
if (deb_check(release:"4.0", prefix:"libicu36-dev", reference:"3.6-2etch1")) 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 | libicu | p-cpe:/a:debian:debian_linux:libicu |
debian | debian_linux | 4.0 | cpe:/o:debian:debian_linux:4.0 |