VDB-111553 · CVE-2017-18026 · Qualys 176371

Redmine up to 3.2.8/3.3.5/3.4.3 Mercurial hg --config/--debugger command injection

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in Redmine up to 3.2.8/3.3.5/3.4.3 (Project Management Software). It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component Mercurial hg. The manipulation of the argument --config/--debugger as part of a Flag leads to a command injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Redmine before 3.2.9, 3.3.x before 3.3.6, and 3.4.x before 3.4.4 does not block the --config and --debugger flags to the Mercurial hg program, which allows remote attackers to execute arbitrary commands (through the Mercurial adapter) via vectors involving a branch whose name begins with a --config= or --debugger= substring, a related issue to CVE-2017-17536.

The bug was discovered 01/10/2018. The weakness was presented 01/10/2018 (Website). The advisory is shared at github.com. This vulnerability is known as CVE-2017-18026 since 01/10/2018. 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 are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1202 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 109558 (Debian DSA-4191-1 : redmine - 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 176371 (Debian Security Update for redmine (DSA 4191-1)).

Upgrading to version 3.2.9, 3.3.6 or 3.4.4 eliminates this vulnerability. A possible mitigation has been published 5 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (109558).






CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
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VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
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NVD Base Score: 8.8
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Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 109558
Nessus Name: Debian DSA-4191-1 : redmine - security update
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OpenVAS ID: 54581
OpenVAS Name: Debian Security Advisory DSA 4191-1 (redmine - security update)
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Threat Intelligenceinfo

Interest: 🔍
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Recommended: Upgrade
Status: 🔍

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Upgrade: Redmine 3.2.9/3.3.6/3.4.4
Patch: github.com


01/10/2018 🔍
01/10/2018 +0 days 🔍
01/10/2018 +0 days 🔍
01/10/2018 +0 days 🔍
01/10/2018 +0 days 🔍
05/03/2018 +113 days 🔍
05/04/2018 +1 days 🔍
01/20/2023 +1722 days 🔍


Advisory: 58ed8655136ff2fe5ff7796859bf6a399c76c678
Status: Not defined

CVE: CVE-2017-18026 (🔍)


Created: 01/10/2018 02:15 PM
Updated: 01/20/2023 01:28 PM
Changes: 01/10/2018 02:15 PM (67), 12/21/2019 06:26 AM (11), 01/20/2023 01:28 PM (5)
Complete: 🔍
Cache ID: 44:F9D:40


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