CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:P/A:P
EPSS
Percentile
90.0%
Alexander Cherepanov discovered that p7zip is susceptible to a directory traversal vulnerability. While extracting an archive, it will extract symlinks and then follow them if they are referenced in further entries. This can be exploited by a rogue archive to write files outside the current directory.
#%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-3289. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(84200);
script_version("2.7");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");
script_cve_id("CVE-2015-1038");
script_bugtraq_id(71890);
script_xref(name:"DSA", value:"3289");
script_name(english:"Debian DSA-3289-1 : p7zip - security update");
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:
"Alexander Cherepanov discovered that p7zip is susceptible to a
directory traversal vulnerability. While extracting an archive, it
will extract symlinks and then follow them if they are referenced in
further entries. This can be exploited by a rogue archive to write
files outside the current directory."
);
script_set_attribute(
attribute:"see_also",
value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=774660"
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/wheezy/p7zip"
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/jessie/p7zip"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2015/dsa-3289"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the p7zip packages.
For the oldstable distribution (wheezy), this problem has been fixed
in version 9.20.1~dfsg.1-4+deb7u1.
For the stable distribution (jessie), this problem has been fixed in
version 9.20.1~dfsg.1-4.1+deb8u1."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/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_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:p7zip");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");
script_set_attribute(attribute:"patch_publication_date", value:"2015/06/15");
script_set_attribute(attribute:"plugin_publication_date", value:"2015/06/16");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2015-2021 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:"7.0", prefix:"p7zip", reference:"9.20.1~dfsg.1-4+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"p7zip-full", reference:"9.20.1~dfsg.1-4+deb7u1")) flag++;
if (deb_check(release:"8.0", prefix:"p7zip", reference:"9.20.1~dfsg.1-4.1+deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"p7zip-full", reference:"9.20.1~dfsg.1-4.1+deb8u1")) 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");