Python Software Foundation CPython 2.7 shutil command injection

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Python Software Foundation CPython 2.7. Affected is an unknown function of the component shutil Module. Performing a manipulation results in command injection. This vulnerability is reported as CVE-2018-1000802. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Python Software Foundation CPython 2.7 (Programming Language Software). This affects an unknown functionality of the component shutil Module. The manipulation with an unknown input leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Python Software Foundation Python (CPython) version 2.7 contains a CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability in shutil module (make_archive function) that can result in Denial of service, Information gain via injection of arbitrary files on the system or entire drive. This attack appear to be exploitable via Passage of unfiltered user input to the function. This vulnerability appears to have been fixed in after commit add531a1e55b0a739b0f42582f1c9747e5649ace.

The bug was discovered 08/30/2018. The weakness was disclosed 09/18/2018 (Website). It is possible to read the advisory at bugs.python.org. This vulnerability is uniquely identified as CVE-2018-1000802 since 09/18/2018. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 19 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 117843 (Fedora 27 : python2 (2018-c3a5b2029a)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197302 (Ubuntu Security Notification for Python2.7, Python3.4, Python3.5 Vulnerabilities (USN-3817-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (117843) and SecurityFocus (BID 105396†). The entries VDB-109585, VDB-113041, VDB-119652 and VDB-119653 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 117843
Nessus Name: Fedora 27 : python2 (2018-c3a5b2029a)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: github.com

Timelineinfo

08/30/2018 🔍
09/18/2018 +18 days 🔍
09/18/2018 +0 days 🔍
09/18/2018 +0 days 🔍
09/19/2018 +1 days 🔍
09/22/2018 +3 days 🔍
09/29/2018 +7 days 🔍
10/01/2018 +2 days 🔍
05/16/2023 +1688 days 🔍

Sourcesinfo

Advisory: FEDORA-2018-c3a5b2029a
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-1000802 (🔍)
GCVE (CVE): GCVE-0-2018-1000802
GCVE (VulDB): GCVE-100-124167

OVAL: 🔍

SecurityFocus: 105396 - Python CVE-2018-14647 Remote Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 09/19/2018 06:42
Updated: 05/16/2023 16:52
Changes: 09/19/2018 06:42 (76), 03/24/2020 16:46 (6), 05/16/2023 16:44 (5), 05/16/2023 16:52 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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