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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
Access Complexity
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.002 Low
EPSS
Percentile
59.8%
Several problems have been discovered in eCryptfs, a cryptographic filesystem for Linux.
CVE-2011-1831 Vasiliy Kulikov of Openwall and Dan Rosenberg discovered that eCryptfs incorrectly validated permissions on the requested mountpoint. A local attacker could use this flaw to mount to arbitrary locations, leading to privilege escalation.
CVE-2011-1832 Vasiliy Kulikov of Openwall and Dan Rosenberg discovered that eCryptfs incorrectly validated permissions on the requested mountpoint. A local attacker could use this flaw to unmount to arbitrary locations, leading to a denial of service.
CVE-2011-1834 Dan Rosenberg and Marc Deslauriers discovered that eCryptfs incorrectly handled modifications to the mtab file when an error occurs. A local attacker could use this flaw to corrupt the mtab file, and possibly unmount arbitrary locations, leading to a denial of service.
CVE-2011-1835 Marc Deslauriers discovered that eCryptfs incorrectly handled keys when setting up an encrypted private directory. A local attacker could use this flaw to manipulate keys during creation of a new user.
CVE-2011-1837 Vasiliy Kulikov of Openwall discovered that eCryptfs incorrectly handled lock counters. A local attacker could use this flaw to possibly overwrite arbitrary files.
We acknowledge the work of the Ubuntu distribution in preparing patches suitable for near-direct inclusion in the Debian package.
#%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-2382. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(57522);
script_version("1.13");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");
script_cve_id("CVE-2011-1831", "CVE-2011-1832", "CVE-2011-1834", "CVE-2011-1835", "CVE-2011-1837", "CVE-2011-3145");
script_bugtraq_id(49108, 49287);
script_xref(name:"DSA", value:"2382");
script_name(english:"Debian DSA-2382-1 : ecryptfs-utils - multiple vulnerabilities");
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 problems have been discovered in eCryptfs, a cryptographic
filesystem for Linux.
- CVE-2011-1831
Vasiliy Kulikov of Openwall and Dan Rosenberg discovered
that eCryptfs incorrectly validated permissions on the
requested mountpoint. A local attacker could use this
flaw to mount to arbitrary locations, leading to
privilege escalation.
- CVE-2011-1832
Vasiliy Kulikov of Openwall and Dan Rosenberg discovered
that eCryptfs incorrectly validated permissions on the
requested mountpoint. A local attacker could use this
flaw to unmount to arbitrary locations, leading to a
denial of service.
- CVE-2011-1834
Dan Rosenberg and Marc Deslauriers discovered that
eCryptfs incorrectly handled modifications to the mtab
file when an error occurs. A local attacker could use
this flaw to corrupt the mtab file, and possibly unmount
arbitrary locations, leading to a denial of service.
- CVE-2011-1835
Marc Deslauriers discovered that eCryptfs incorrectly
handled keys when setting up an encrypted private
directory. A local attacker could use this flaw to
manipulate keys during creation of a new user.
- CVE-2011-1837
Vasiliy Kulikov of Openwall discovered that eCryptfs
incorrectly handled lock counters. A local attacker
could use this flaw to possibly overwrite arbitrary
files.
We acknowledge the work of the Ubuntu distribution in preparing
patches suitable for near-direct inclusion in the Debian package."
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2011-1831"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2011-1832"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2011-1834"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2011-1835"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2011-1837"
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/squeeze/ecryptfs-utils"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2012/dsa-2382"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the ecryptfs-utils packages.
For the oldstable distribution (lenny), these problems have been fixed
in version 68-1+lenny1.
For the stable distribution (squeeze), these problems have been fixed
in version 83-4+squeeze1."
);
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:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/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:ecryptfs-utils");
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:"vuln_publication_date", value:"2014/02/15");
script_set_attribute(attribute:"patch_publication_date", value:"2012/01/07");
script_set_attribute(attribute:"plugin_publication_date", value:"2012/01/12");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2012-2021 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:"ecryptfs-utils", reference:"68-1+lenny1")) flag++;
if (deb_check(release:"6.0", prefix:"ecryptfs-utils", reference:"83-4+squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"ecryptfs-utils-dbg", reference:"83-4+squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"libecryptfs-dev", reference:"83-4+squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"libecryptfs0", reference:"83-4+squeeze1")) 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 | ecryptfs-utils | p-cpe:/a:debian:debian_linux:ecryptfs-utils |
debian | debian_linux | 5.0 | cpe:/o:debian:debian_linux:5.0 |
debian | debian_linux | 6.0 | cpe:/o:debian:debian_linux:6.0 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1831
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1832
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1834
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1835
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1837
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3145
packages.debian.org/source/squeeze/ecryptfs-utils
security-tracker.debian.org/tracker/CVE-2011-1831
security-tracker.debian.org/tracker/CVE-2011-1832
security-tracker.debian.org/tracker/CVE-2011-1834
security-tracker.debian.org/tracker/CVE-2011-1835
security-tracker.debian.org/tracker/CVE-2011-1837
www.debian.org/security/2012/dsa-2382
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
Access Complexity
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.002 Low
EPSS
Percentile
59.8%