Xdg-utils up to 1.1.2 xdg-open open_envvar BROWSER injection

CVSS Meta Temp Score
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Xdg-utils up to 1.1.2. This affects the function open_envvar of the component xdg-open. The manipulation of the argument BROWSER as part of Environment Variable results in injection. This vulnerability is known as CVE-2017-18266. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in Xdg-utils up to 1.1.2. Affected is the function open_envvar of the component xdg-open. The manipulation of the argument BROWSER as part of a Environment Variable leads to a injection vulnerability. CWE is classifying the issue as CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The open_envvar function in xdg-open in xdg-utils before 1.1.3 does not validate strings before launching the program specified by the BROWSER environment variable, which might allow remote attackers to conduct argument-injection attacks via a crafted URL, as demonstrated by %s in this environment variable.

The bug was discovered 05/13/2018. The weakness was published 05/10/2018 (Website). The advisory is available at bugs.freedesktop.org. This vulnerability is traded as CVE-2017-18266 since 05/10/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1055 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 110165 (Debian DSA-4211-1 : xdg-utils - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171299 (OpenSUSE Security Update for xdg-utils (openSUSE-SU-2018:1596-1)).

Upgrading to version 1.1.3 eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (110165). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

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

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Injection
CWE: CWE-74 / CWE-707 / CWE-20
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: 110165
Nessus Name: Debian DSA-4211-1 : xdg-utils - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 55599
OpenVAS Name: Debian Security Advisory DSA 4211-1 (xdg-utils - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Upgrade: Xdg-utils 1.1.3
Patch: cgit.freedesktop.org

Timelineinfo

05/10/2018 🔍
05/10/2018 +0 days 🔍
05/10/2018 +0 days 🔍
05/10/2018 +0 days 🔍
05/13/2018 +3 days 🔍
05/25/2018 +12 days 🔍
05/29/2018 +4 days 🔍
03/11/2023 +1747 days 🔍

Sourcesinfo

Advisory: USN-3650-1
Status: Not defined

CVE: CVE-2017-18266 (🔍)
GCVE (CVE): GCVE-0-2017-18266
GCVE (VulDB): GCVE-100-117570

OVAL: 🔍

Entryinfo

Created: 05/10/2018 21:40
Updated: 03/11/2023 14:17
Changes: 05/10/2018 21:40 (75), 02/04/2020 08:54 (2), 03/11/2023 14:17 (5)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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