CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
8.5 | $0-$5k | 0.00 |
A vulnerability, which was classified as very critical, was found in Apple tvOS up to 9.2.1 (Digital Media Player). This affects some unknown processing of the component libxml2. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:
The xmlParseElementDecl function in parser.c in libxml2 before 2.9.4 allows context-dependent attackers to cause a denial of service (heap-based buffer underread and application crash) via a crafted file, involving xmlParseName.
The weakness was presented 07/18/2016 with Nanyang Technological University as HT206905 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is uniquely identified as CVE-2016-4447 since 05/02/2016. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/06/2022). The advisory points out:
Multiple memory corruption issues were addressed through improved memory handling.
The vulnerability scanner Nessus provides a plugin with the ID 92221 (Amazon Linux AMI : libxml2 (ALAS-2016-719)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43650 (Juniper Junos Multiple vulnerabilities in libxml2 (JSA10916)).
Upgrading to version 9.2.2 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (92221). See 79335, 79336, 79337 and 79338 for similar entries.
Product
Type
Vendor
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: 8.7VulDB Meta Temp Score: 8.5
VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.5
NVD Vector: 🔍
CVSSv2
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Memory corruptionCWE: CWE-119
ATT&CK: Unknown
Local: No
Remote: Yes
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: 92221
Nessus Name: Amazon Linux AMI : libxml2 (ALAS-2016-719)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 703593
OpenVAS Name: Debian Security Advisory DSA 3593-1 (libxml2 - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
Exposure Time: 🔍
Upgrade: tvOS 9.2.2
Patch: git.gnome.org
Timeline
05/02/2016 🔍05/23/2016 🔍
06/09/2016 🔍
07/15/2016 🔍
07/18/2016 🔍
07/18/2016 🔍
07/19/2016 🔍
09/06/2022 🔍
Sources
Vendor: apple.comAdvisory: HT206905
Organization: Nanyang Technological University
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2016-4447 (🔍)
OVAL: 🔍
SecurityTracker: 1036348
SecurityFocus: 90864 - Libxml2 'xmlParseName' CVE-2016-4447 Remote Denial of Service Vulnerability
See also: 🔍
Entry
Created: 07/19/2016 19:45Updated: 09/06/2022 14:37
Changes: 07/19/2016 19:45 (56), 03/03/2019 15:06 (19), 09/06/2022 14:34 (3), 09/06/2022 14:37 (11)
Complete: 🔍
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