CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
EPSS
Percentile
99.7%
A flaw was found in the APR library, which could be exploited through Apache HTTPD’s mod_autoindex. If a directory indexed by mod_autoindex contained files with sufficiently long names, a remote attacker could send a carefully crafted request which would cause excessive CPU usage. This could be used in a denial of service attack.
#%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-2237. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(53900);
script_version("1.22");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
script_cve_id("CVE-2011-0419");
script_bugtraq_id(47820, 47929);
script_xref(name:"DSA", value:"2237");
script_name(english:"Debian DSA-2237-1 : apr - denial of service");
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:
"A flaw was found in the APR library, which could be exploited through
Apache HTTPD's mod_autoindex. If a directory indexed by mod_autoindex
contained files with sufficiently long names, a remote attacker could
send a carefully crafted request which would cause excessive CPU
usage. This could be used in a denial of service attack."
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/squeeze/apr"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2011/dsa-2237"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the apr packages and restart the apache2 server.
For the oldstable distribution (lenny), this problem has been fixed in
version 1.2.12-5+lenny3.
For the stable distribution (squeeze), this problem has been fixed in
version 1.4.2-6+squeeze1."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P");
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:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:apr");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:5.0");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");
script_set_attribute(attribute:"patch_publication_date", value:"2011/05/15");
script_set_attribute(attribute:"plugin_publication_date", value:"2011/05/16");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2011-2021 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:"5.0", prefix:"apr", reference:"1.2.12-5+lenny3")) flag++;
if (deb_check(release:"6.0", prefix:"libapr1", reference:"1.4.2-6+squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"libapr1-dbg", reference:"1.4.2-6+squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"libapr1-dev", reference:"1.4.2-6+squeeze1")) 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");
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | apr | p-cpe:/a:debian:debian_linux:apr |
debian | debian_linux | 5.0 | cpe:/o:debian:debian_linux:5.0 |
debian | debian_linux | 6.0 | cpe:/o:debian:debian_linux:6.0 |