CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.9 | $0-$5k | 0.00 |
A vulnerability was found in TigerVNC (version now known) and classified as problematic. Affected by this issue is some unknown processing of the component XRegion. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. CVE summarizes:
XRegion in TigerVNC allows remote VNC servers to cause a denial of service (NULL pointer dereference) by leveraging failure to check a malloc return value, a similar issue to CVE-2014-6052.
The bug was discovered 10/10/2014. The weakness was presented 12/14/2016 by Tim Waug with Red Hat (Website). The advisory is available at seclists.org. This vulnerability is handled as CVE-2014-8241 since 10/11/2014. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.
The vulnerability was handled as a non-public zero-day exploit for at least 405 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 87576 (Scientific Linux Security Update : tigervnc on SL7.x x86_64), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Scientific Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350079 (Amazon Linux Security Advisory for tigervnc: ALAS-2015-623).
Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (87576). See 66118, 72083, 77329 and 77330 for similar entries.
Product
Name
CPE 2.3
CPE 2.2
CVSSv4
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CVSSv3
VulDB Meta Base Score: 7.0VulDB Meta Temp Score: 6.9
VulDB Base Score: 4.3
VulDB Temp Score: 4.1
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NVD Base Score: 9.8
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CVSSv2
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Exploiting
Class: Null pointer dereferenceCWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
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0-Day | unlock | unlock | unlock | unlock |
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Nessus ID: 87576
Nessus Name: Scientific Linux Security Update : tigervnc on SL7.x x86_64
Nessus File: 🔍
Nessus Risk: 🔍
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OpenVAS ID: 63544
OpenVAS Name: Amazon Linux Local Check: alas-2015-623
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Threat Intelligence
Interest: 🔍Active Actors: 🔍
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Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Timeline
10/10/2014 🔍10/10/2014 🔍
10/11/2014 🔍
11/19/2015 🔍
12/22/2015 🔍
12/14/2016 🔍
12/14/2016 🔍
12/15/2016 🔍
10/08/2022 🔍
Sources
Advisory: RHSA-2015:2233Researcher: Tim Waug
Organization: Red Hat
Status: Not defined
Confirmation: 🔍
CVE: CVE-2014-8241 (🔍)
SecurityFocus: 70390 - TigerVNC NULL Pointer Dereference Denial of Service Vulnerability
See also: 🔍
Entry
Created: 12/15/2016 10:29Updated: 10/08/2022 15:07
Changes: 12/15/2016 10:29 (69), 07/07/2019 18:57 (9), 10/08/2022 15:07 (3)
Complete: 🔍
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