6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.5 High
AI Score
Confidence
Low
0.018 Low
EPSS
Percentile
88.4%
Multiple vulnerabilities were discovered in Python2.7, an interactive high-level object-oriented language.
CVE-2018-20852
By using a malicious server an attacker might steal cookies that are meant for other domains.
CVE-2019-5010
NULL pointer dereference using a specially crafted X509 certificate.
CVE-2019-9636
Improper Handling of Unicode Encoding (with an incorrect netloc) during NFKC normalization resulting in information disclosure (credentials, cookies, etc. that are cached against a given hostname).
A specially crafted URL could be incorrectly parsed to locate cookies or authentication data and send that information to a different host than when parsed correctly.
CVE-2019-9740
An issue was discovered in urllib2 where CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the query string after a ? character) followed by an HTTP header or a Redis command.
CVE-2019-9947
An issue was discovered in urllib2 where CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the path component of a URL that lacks a ? character) followed by an HTTP header or a Redis command. This is similar to the CVE-2019-9740 query string issue.
CVE-2019-9948
urllib supports the local_file: scheme, which makes it easier for remote attackers to bypass protection mechanisms that blacklist file:
URIs, as demonstrated by triggering a urllib.urlopen(‘local_file:///etc/passwd’) call.
CVE-2019-10160
A security regression of CVE-2019-9636 was discovered which still allows an attacker to exploit CVE-2019-9636 by abusing the user and password parts of a URL. When an application parses user-supplied URLs to store cookies, authentication credentials, or other kind of information, it is possible for an attacker to provide specially crafted URLs to make the application locate host-related information (e.g. cookies, authentication data) and send them to a different host than where it should, unlike if the URLs had been correctly parsed.
The result of an attack may vary based on the application.
CVE-2019-16056
The email module wrongly parses email addresses that contain multiple @ characters. An application that uses the email module and implements some kind of checks on the From/To headers of a message could be tricked into accepting an email address that should be denied.
CVE-2019-20907
Opening a crafted tar file could result in an infinite loop due to missing header validation.
For Debian 9 stretch, these problems have been fixed in version 2.7.13-2+deb9u4.
We recommend that you upgrade your python2.7 packages.
For the detailed security status of python2.7 please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/python2.7
NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-2337-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('compat.inc');
if (description)
{
script_id(139757);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/23");
script_cve_id(
"CVE-2018-20852",
"CVE-2019-10160",
"CVE-2019-16056",
"CVE-2019-20907",
"CVE-2019-5010",
"CVE-2019-9636",
"CVE-2019-9740",
"CVE-2019-9947",
"CVE-2019-9948"
);
script_xref(name:"IAVA", value:"2020-A-0340-S");
script_name(english:"Debian DLA-2337-1 : python2.7 security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security update.");
script_set_attribute(attribute:"description", value:
"Multiple vulnerabilities were discovered in Python2.7, an interactive
high-level object-oriented language.
CVE-2018-20852
By using a malicious server an attacker might steal cookies that are
meant for other domains.
CVE-2019-5010
NULL pointer dereference using a specially crafted X509 certificate.
CVE-2019-9636
Improper Handling of Unicode Encoding (with an incorrect netloc)
during NFKC normalization resulting in information disclosure
(credentials, cookies, etc. that are cached against a given hostname).
A specially crafted URL could be incorrectly parsed to locate cookies
or authentication data and send that information to a different host
than when parsed correctly.
CVE-2019-9740
An issue was discovered in urllib2 where CRLF injection is possible if
the attacker controls a url parameter, as demonstrated by the first
argument to urllib.request.urlopen with \r\n (specifically in the
query string after a ? character) followed by an HTTP header or a
Redis command.
CVE-2019-9947
An issue was discovered in urllib2 where CRLF injection is possible if
the attacker controls a url parameter, as demonstrated by the first
argument to urllib.request.urlopen with \r\n (specifically in the path
component of a URL that lacks a ? character) followed by an HTTP
header or a Redis command. This is similar to the CVE-2019-9740 query
string issue.
CVE-2019-9948
urllib supports the local_file: scheme, which makes it easier for
remote attackers to bypass protection mechanisms that blacklist file:
URIs, as demonstrated by triggering a
urllib.urlopen('local_file:///etc/passwd') call.
CVE-2019-10160
A security regression of CVE-2019-9636 was discovered which still
allows an attacker to exploit CVE-2019-9636 by abusing the user and
password parts of a URL. When an application parses user-supplied URLs
to store cookies, authentication credentials, or other kind of
information, it is possible for an attacker to provide specially
crafted URLs to make the application locate host-related information
(e.g. cookies, authentication data) and send them to a different host
than where it should, unlike if the URLs had been correctly parsed.
The result of an attack may vary based on the application.
CVE-2019-16056
The email module wrongly parses email addresses that contain multiple
@ characters. An application that uses the email module and implements
some kind of checks on the From/To headers of a message could be
tricked into accepting an email address that should be denied.
CVE-2019-20907
Opening a crafted tar file could result in an infinite loop due to
missing header validation.
For Debian 9 stretch, these problems have been fixed in version
2.7.13-2+deb9u4.
We recommend that you upgrade your python2.7 packages.
For the detailed security status of python2.7 please refer to its
security tracker page at:
https://security-tracker.debian.org/tracker/python2.7
NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues.");
script_set_attribute(attribute:"see_also", value:"https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/stretch/python2.7");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/python2.7");
script_set_attribute(attribute:"solution", value:
"Upgrade the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
script_set_cvss_temporal_vector("CVSS2#E:POC/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:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-9948");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2019-9636");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/08");
script_set_attribute(attribute:"patch_publication_date", value:"2020/08/22");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/08/24");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:idle-python2.7");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpython2.7");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpython2.7-dbg");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpython2.7-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpython2.7-minimal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpython2.7-stdlib");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpython2.7-testsuite");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python2.7");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python2.7-dbg");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python2.7-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python2.7-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python2.7-examples");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python2.7-minimal");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Debian Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
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:"9.0", prefix:"idle-python2.7", reference:"2.7.13-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"libpython2.7", reference:"2.7.13-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"libpython2.7-dbg", reference:"2.7.13-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"libpython2.7-dev", reference:"2.7.13-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"libpython2.7-minimal", reference:"2.7.13-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"libpython2.7-stdlib", reference:"2.7.13-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"libpython2.7-testsuite", reference:"2.7.13-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"python2.7", reference:"2.7.13-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"python2.7-dbg", reference:"2.7.13-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"python2.7-dev", reference:"2.7.13-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"python2.7-doc", reference:"2.7.13-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"python2.7-examples", reference:"2.7.13-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"python2.7-minimal", reference:"2.7.13-2+deb9u4")) 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 | idle-python2.7 | p-cpe:/a:debian:debian_linux:idle-python2.7 |
debian | debian_linux | libpython2.7 | p-cpe:/a:debian:debian_linux:libpython2.7 |
debian | debian_linux | libpython2.7-dbg | p-cpe:/a:debian:debian_linux:libpython2.7-dbg |
debian | debian_linux | libpython2.7-dev | p-cpe:/a:debian:debian_linux:libpython2.7-dev |
debian | debian_linux | libpython2.7-minimal | p-cpe:/a:debian:debian_linux:libpython2.7-minimal |
debian | debian_linux | libpython2.7-stdlib | p-cpe:/a:debian:debian_linux:libpython2.7-stdlib |
debian | debian_linux | libpython2.7-testsuite | p-cpe:/a:debian:debian_linux:libpython2.7-testsuite |
debian | debian_linux | python2.7 | p-cpe:/a:debian:debian_linux:python2.7 |
debian | debian_linux | python2.7-dbg | p-cpe:/a:debian:debian_linux:python2.7-dbg |
debian | debian_linux | python2.7-dev | p-cpe:/a:debian:debian_linux:python2.7-dev |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20852
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10160
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16056
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20907
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5010
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9636
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9740
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9947
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9948
lists.debian.org/debian-lts-announce/2020/08/msg00034.html
packages.debian.org/source/stretch/python2.7
security-tracker.debian.org/tracker/source-package/python2.7
6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.5 High
AI Score
Confidence
Low
0.018 Low
EPSS
Percentile
88.4%