cURL up to 7.61.1 tool_msgs.c voutf out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability was found in cURL up to 7.61.1. It has been rated as critical. This vulnerability affects the function voutf of the file tool_msgs.c. The manipulation leads to out-of-bounds. This vulnerability is documented as CVE-2018-16842. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in cURL up to 7.61.1 (Network Utility Software). This issue affects the function voutf of the file tool_msgs.c. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Curl versions 7.14.1 through 7.61.1 are vulnerable to a heap-based buffer over-read in the tool_msgs.c:voutf() function that may result in information exposure and denial of service.

The bug was discovered 10/31/2018. The weakness was released 10/30/2018 by Daniel Stenberg as confirmed bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. The identification of this vulnerability is CVE-2018-16842 since 09/11/2018. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 118591 (Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : curl vulnerabilities (USN-3805-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197290 (Ubuntu Security Notification for Curl Vulnerabilities (USN-3805-1)).

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

The vulnerability is also documented in the databases at Tenable (118591) and SecurityFocus (BID 95019†). Entries connected to this vulnerability are available at VDB-94628, VDB-98624, VDB-104236 and VDB-125627. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

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

NVD Base Score: 9.1
NVD Vector: 🔍

CNA Base Score: 4.4
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 118591
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : curl vulnerabilities (USN-3805-1)
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

12/21/2016 🔍
09/11/2018 +628 days 🔍
10/30/2018 +50 days 🔍
10/31/2018 +0 days 🔍
10/31/2018 +0 days 🔍
10/31/2018 +0 days 🔍
11/01/2018 +1 days 🔍
11/01/2018 +0 days 🔍
06/04/2023 +1676 days 🔍

Sourcesinfo

Product: github.com

Advisory: USN-3805-1
Researcher: Daniel Stenberg
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-16842 (🔍)
GCVE (CVE): GCVE-0-2018-16842
GCVE (VulDB): GCVE-100-126371

OVAL: 🔍

SecurityFocus: 95019 - cURL/libcURL CVE-2016-9586 Buffer Overflow Vulnerability
SecurityTracker: 1042014

See also: 🔍

Entryinfo

Created: 11/01/2018 06:21
Updated: 06/04/2023 09:21
Changes: 11/01/2018 06:21 (73), 04/09/2020 12:09 (7), 06/04/2023 09:16 (6), 06/04/2023 09:18 (12), 06/04/2023 09:21 (1)
Complete: 🔍
Cache ID: 216::103

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