GNU wget up to 1.19.4 Cookie http.c resp_new input validation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.1$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in GNU wget up to 1.19.4. This affects the function resp_new of the file http.c of the component Cookie Handler. The manipulation with the input \r\n leads to input validation. This vulnerability is traded as CVE-2018-0494. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in GNU wget up to 1.19.4 (Automation Software). This issue affects the function resp_new of the file http.c of the component Cookie Handler. The manipulation with the input value \r\n leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

GNU Wget before 1.19.5 is prone to a cookie injection vulnerability in the resp_new function in http.c via a \r\n sequence in a continuation line.

The bug was discovered 05/06/2018. The weakness was shared 05/06/2018 (Website). The advisory is shared at securityfocus.com. The identification of this vulnerability is CVE-2018-0494 since 11/27/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details as well as a public exploit are known.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 109740 (Fedora 27 : wget (2018-29ebba0906)), 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 157836 (Oracle Enterprise Linux Security Update for wget (ELSA-2018-3052)).

Upgrading to version 1.19.5 eliminates this vulnerability. A possible mitigation has been published 1 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (44601), Tenable (109740) and SecurityFocus (BID 104129†). The entries VDB-108656 and VDB-108657 are related to this item. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 109740
Nessus Name: Fedora 27 : wget (2018-29ebba0906)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 861507
OpenVAS Name: Fedora Update for wget FEDORA-2018-29ebba0906
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Upgrade: wget 1.19.5
Patch: git.savannah.gnu.org

Timelineinfo

11/27/2017 🔍
05/06/2018 +159 days 🔍
05/06/2018 +0 days 🔍
05/06/2018 +0 days 🔍
05/06/2018 +0 days 🔍
05/07/2018 +1 days 🔍
05/13/2018 +6 days 🔍
05/14/2018 +1 days 🔍
12/03/2024 +2395 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: RHSA-2018:3052⛔
Status: Confirmed

CVE: CVE-2018-0494 (🔍)
GCVE (CVE): GCVE-0-2018-0494
GCVE (VulDB): GCVE-100-117389

OVAL: 🔍

SecurityFocus: 104129 - GNU wget CVE-2018-0494 Cookie Injection Security Bypass Vulnerability
SecurityTracker: 1040838

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 05/07/2018 08:49
Updated: 12/03/2024 23:36
Changes: 05/07/2018 08:49 (81), 02/02/2020 16:13 (7), 03/08/2023 16:54 (6), 12/03/2024 23:36 (14)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!