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Test ID:1.3.6.1.4.1.25623.1.1.2.2019.2019
Category:Huawei EulerOS Local Security Checks
Title:Huawei EulerOS: Security Advisory for python (EulerOS-SA-2019-2019)
Summary:The remote host is missing an update for the Huawei EulerOS 'python' package(s) announced via the EulerOS-SA-2019-2019 advisory.
Description:Summary:
The remote host is missing an update for the Huawei EulerOS 'python' package(s) announced via the EulerOS-SA-2019-2019 advisory.

Vulnerability Insight:
A security regression of CVE-2019-9636 was discovered in python, since commit d537ab0ff9767ef024f26246899728f0116b1ec3, 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-2019-10160)

urllib in Python 2.x through 2.7.16 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-2019-9948)

Python's elementtree C accelerator failed to initialise Expat's hash salt during initialization. This could make it easy to conduct denial of service attacks against Expat by constructing an XML document that would cause pathological hash collisions in Expat's internal data structures, consuming large amounts CPU and RAM.(CVE-2018-14647)

python 2.7.14 is vulnerable to a Heap-Buffer-Overflow as well as a Heap-Use-After-Free. Python versions prior to 2.7.14 may also be vulnerable and it appears that Python 2.7.17 and prior may also be vulnerable however this has not been confirmed. The vulnerability lies when multiply threads are handling large amounts of data. In both cases there is essentially a race condition that occurs. For the Heap-Buffer-Overflow, Thread 2 is creating the size for a buffer, but Thread1 is already writing to the buffer without knowing how much to write. So when a large amount of data is being processed, it is very easy to cause memory corruption using a Heap-Buffer-Overflow. As for the Use-After-Free, Thread3->Malloc->Thread1->Free's->Thread2-Re-uses-Free'd Memory. The PSRT has stated that this is not a security vulnerability due to the fact that the attacker must be able to run code, however in some situations, such as function as a service, this vulnerability can potentially be used by an attacker to violate a trust boundary, as such the DWF feels this issue deserves a CVE.(CVE-2018-1000030)

Affected Software/OS:
'python' package(s) on Huawei EulerOS V2.0SP3.

Solution:
Please install the updated package(s).

CVSS Score:
6.4

CVSS Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:N

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2019-9948
BugTraq ID: 107549
http://www.securityfocus.com/bid/107549
Bugtraq: 20191021 [slackware-security] python (SSA:2019-293-01) (Google Search)
https://seclists.org/bugtraq/2019/Oct/29
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HQEQLXLOCR3SNM3AA5RRYJFQ5AZBYJ4L/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KRYFIMISZ47NTAU3XWZUOFB7CYL62KES/
https://security.gentoo.org/glsa/202003-26
http://packetstormsecurity.com/files/154927/Slackware-Security-Advisory-python-Updates.html
https://bugs.python.org/issue35907
https://github.com/python/cpython/pull/11842
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0@%3Cissues.bookkeeper.apache.org%3E
https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html
https://lists.debian.org/debian-lts-announce/2019/07/msg00011.html
https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html
https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html
RedHat Security Advisories: RHSA-2019:1700
https://access.redhat.com/errata/RHSA-2019:1700
RedHat Security Advisories: RHSA-2019:2030
https://access.redhat.com/errata/RHSA-2019:2030
RedHat Security Advisories: RHSA-2019:3335
https://access.redhat.com/errata/RHSA-2019:3335
RedHat Security Advisories: RHSA-2019:3520
https://access.redhat.com/errata/RHSA-2019:3520
SuSE Security Announcement: openSUSE-SU-2019:1273 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00092.html
SuSE Security Announcement: openSUSE-SU-2019:1580 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00050.html
https://usn.ubuntu.com/4127-1/
https://usn.ubuntu.com/4127-2/
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