CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS
Percentile
86.2%
It has been discovered that the Perl interpreter may encounter a buffer overflow condition when compiling certain regular expressions containing Unicode characters. This also happens if the offending characters are contained in a variable reference protected by the \Qβ¦\E quoting construct. When encountering this condition, the Perl interpreter typically crashes, but arbitrary code execution cannot be ruled out.
#%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-1556. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(32057);
script_version("1.15");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
script_cve_id("CVE-2008-1927");
script_bugtraq_id(28928);
script_xref(name:"DSA", value:"1556");
script_name(english:"Debian DSA-1556-2 : perl - heap buffer overflow");
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:
"It has been discovered that the Perl interpreter may encounter a
buffer overflow condition when compiling certain regular expressions
containing Unicode characters. This also happens if the offending
characters are contained in a variable reference protected by the
\Q...\E quoting construct. When encountering this condition, the Perl
interpreter typically crashes, but arbitrary code execution cannot be
ruled out."
);
script_set_attribute(
attribute:"see_also",
value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=454792"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2008/dsa-1556"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the perl packages.
For the stable distribution (etch), this problem has been fixed in
version 5.8.8-7etch3."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/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_cwe_id(399);
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:perl");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:4.0");
script_set_attribute(attribute:"patch_publication_date", value:"2008/04/24");
script_set_attribute(attribute:"plugin_publication_date", value:"2008/04/28");
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:"libcgi-fast-perl", reference:"5.8.8-7etch3")) flag++;
if (deb_check(release:"4.0", prefix:"libperl-dev", reference:"5.8.8-7etch3")) flag++;
if (deb_check(release:"4.0", prefix:"libperl5.8", reference:"5.8.8-7etch3")) flag++;
if (deb_check(release:"4.0", prefix:"perl", reference:"5.8.8-7etch3")) flag++;
if (deb_check(release:"4.0", prefix:"perl-base", reference:"5.8.8-7etch3")) flag++;
if (deb_check(release:"4.0", prefix:"perl-debug", reference:"5.8.8-7etch3")) flag++;
if (deb_check(release:"4.0", prefix:"perl-doc", reference:"5.8.8-7etch3")) flag++;
if (deb_check(release:"4.0", prefix:"perl-modules", reference:"5.8.8-7etch3")) flag++;
if (deb_check(release:"4.0", prefix:"perl-suid", reference:"5.8.8-7etch3")) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
else security_warning(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");