X.Org up to 1.19.0 MIT Cookie MitCheckCookie information disclosure
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.6 | $0-$5k | 0.00 |
A vulnerability was found in X.Org up to 1.19.0. It has been declared as critical. This vulnerability affects the function MitCheckCookie
of the component MIT Cookie Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality, integrity, and availability.
The bug was discovered 02/28/2017. The weakness was disclosed 02/28/2017 by Eric Sesterhenn with X41 D-Sec GmbH as Advisory X41-2017-001: Multiple Vulnerabilities in X.org as confirmed mailinglist post (Full-Disclosure). The advisory is available at seclists.org. This vulnerability was named CVE-2017-2624 since 12/01/2016. The exploitation appears to be difficult. Local access is required to approach this attack. The successful exploitation requires a single authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1592 by the MITRE ATT&CK project. Responsible for the vulnerability is the following code:
MitCheckCookie(unsigned short data_length, const char *data, ClientPtr client, const char **reason) { struct auth *auth; for (auth = mit_auth; auth; auth = auth->next) { if (data_length == auth->len && memcmp(data, auth->data, (int) data_length) == 0) return auth->id; } *reason = "Invalid MIT-MAGIC-COOKIE-1 key"; return (XID) -1; }
The vulnerability scanner Nessus provides a plugin with the ID 101949 (Ubuntu 14.04 LTS / 16.04 LTS / 17.04 : xorg-server, xorg-server-hwe-16.04, xorg-server-lts-xenial vulnerabilities (USN-3362-1)), 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 196856 (Ubuntu Security Notification for Xorg-server, Xorg-server-hwe-16.04, Xorg-server-lts-xenial Vulnerabilities (USN-3362-1)).
Upgrading eliminates this vulnerability. A possible mitigation has been published 6 months after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (101949). The entries 97343, 97344, 97345 and 97346 are pretty similar.
Product
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.8VulDB Meta Temp Score: 5.7
VulDB Base Score: 4.5
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍
Researcher Base Score: 5.9
Researcher Vector: 🔍
NVD Base Score: 7.0
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Information disclosureCWE: CWE-200 / CWE-284 / CWE-266
ATT&CK: T1592
Local: Yes
Remote: No
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Nessus ID: 101949
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 17.04 : xorg-server, xorg-server-hwe-16.04, xorg-server-lts-xenial vulnerabilities (USN-3362-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for xorg-server USN-3362-1
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Timeline
12/01/2016 🔍02/28/2017 🔍
02/28/2017 🔍
02/28/2017 🔍
02/28/2017 🔍
02/28/2017 🔍
07/24/2017 🔍
07/25/2017 🔍
07/27/2018 🔍
08/18/2020 🔍
Sources
Advisory: Advisory X41-2017-001: Multiple Vulnerabilities in X.orgResearcher: Eric Sesterhenn
Organization: X41 D-Sec GmbH
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2017-2624 (🔍)
SecurityTracker: 1037919
SecurityFocus: 96480 - X.org X Server Local Multiple Security Vulnerabilities
OSVDB: - CVE-2017-2624 - xorg-x11-server - Brute Force Issue
See also: 🔍
Entry
Created: 02/28/2017 20:24Updated: 08/18/2020 07:38
Changes: 02/28/2017 20:24 (90), 08/18/2020 07:38 (8)
Complete: 🔍
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