Apple tvOS up to 10.2.2 zlib numeric error

CVSS Meta Temp Score
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CTI Interest Score
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9.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Apple tvOS up to 10.2.2. It has been declared as very critical. Impacted is an unknown function of the component zlib. Executing a manipulation can lead to numeric error. This vulnerability is registered as CVE-2016-9843. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple tvOS up to 10.2.2 (Digital Media Player). It has been declared as very critical. This vulnerability affects some unknown processing of the component zlib. The manipulation with an unknown input leads to a numeric error vulnerability. The CWE definition for the vulnerability is CWE-189. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The crc32_big function in crc32.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact via vectors involving big-endian CRC calculation.

The bug was discovered 12/05/2016. The weakness was published 09/25/2017 as HT208113 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2016-9843 since 12/05/2016. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 01/04/2023). The advisory points out:

Multiple issues were addressed by updating to version 1.2.11.

The vulnerability was handled as a non-public zero-day exploit for at least 169 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 100378 (SUSE SLES11 Security Update : java-1_7_1-ibm (SUSE-SU-2017:1387-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171691 (SUSE Enterprise Linux Security Update for mysql (SUSE-SU-2018:3542-1)).

Upgrading to version 11.0 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (100378) and SecurityFocus (BID 105612†). Similar entries are available at VDB-79791, VDB-95830, VDB-97118 and VDB-99028. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 100378
Nessus Name: SUSE SLES11 Security Update : java-1_7_1-ibm (SUSE-SU-2017:1387-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-HT208144
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: tvOS 11.0
Patch: github.com

Timelineinfo

12/05/2016 🔍
12/05/2016 +0 days 🔍
05/23/2017 +169 days 🔍
05/24/2017 +1 days 🔍
09/25/2017 +124 days 🔍
09/25/2017 +0 days 🔍
10/23/2017 +28 days 🔍
10/16/2018 +357 days 🔍
01/04/2023 +1541 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT208113
Researcher: Michael Orlitzky
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-9843 (🔍)
GCVE (CVE): GCVE-0-2016-9843
GCVE (VulDB): GCVE-100-108520

OVAL: 🔍

SecurityFocus: 105612
SecurityTracker: 1039427

See also: 🔍

Entryinfo

Created: 10/23/2017 11:55
Updated: 01/04/2023 12:59
Changes: 10/23/2017 11:55 (67), 11/30/2019 06:51 (14), 01/20/2021 13:16 (2), 01/20/2021 13:19 (3), 01/04/2023 12:59 (3)
Complete: 🔍
Cache ID: 216:4A0:103

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