sensible-utils up to 0.0.10 sensible-browser --proxy-pac-file injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$0-$5k0.00

A vulnerability classified as critical was found in sensible-utils up to 0.0.10. Affected by this vulnerability is an unknown function of the component sensible-browser. The manipulation of the argument --proxy-pac-file as part of a Environment Variable leads to a injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

sensible-browser in sensible-utils before 0.0.11 does not validate strings before launching the program specified by the BROWSER environment variable, which allows remote attackers to conduct argument-injection attacks via a crafted URL, as demonstrated by a --proxy-pac-file argument.

The bug was discovered 11/14/2017. The weakness was disclosed 12/11/2017 (Website). It is possible to read the advisory at metadata.ftp-master.debian.org. This vulnerability is known as CVE-2017-17512 since 12/11/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 27 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 105431 (Debian DSA-4071-1 : sensible-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 277225 (Fedora Security Update for sensible-utils (FEDORA-2017-80c6b4d3be)).

Upgrading to version 0.0.11 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (105431).

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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Exploitinginfo

Class: Injection
CWE: CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

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Current Price Estimation: 🔍

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Nessus ID: 105431
Nessus Name: Debian DSA-4071-1 : sensible-utils - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 54548
OpenVAS Name: Fedora Update for sensible-utils FEDORA-2017-80c6b4d3be
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: sensible-utils 0.0.11

Timelineinfo

11/14/2017 🔍
12/11/2017 +27 days 🔍
12/11/2017 +0 days 🔍
12/11/2017 +0 days 🔍
12/11/2017 +0 days 🔍
12/21/2017 +10 days 🔍
12/26/2017 +5 days 🔍
01/17/2023 +1848 days 🔍

Sourcesinfo

Advisory: USN-3584-1
Status: Not defined

CVE: CVE-2017-17512 (🔍)
OVAL: 🔍

Entryinfo

Created: 12/11/2017 15:34
Updated: 01/17/2023 12:40
Changes: 12/11/2017 15:34 (75), 12/13/2019 16:26 (2), 01/17/2023 12:40 (4)
Complete: 🔍

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