Apple watchOS up to 3.2.3 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 identified as very critical has been detected in Apple watchOS up to 3.2.3. Affected is an unknown function of the component zlib. This manipulation causes numeric error. This vulnerability is handled as CVE-2016-9843. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Apple watchOS up to 3.2.3 (Smartwatch Operating System) and classified as very critical. Affected by this vulnerability is some unknown functionality 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. The summary by CVE is:

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 released 09/25/2017 as HT208115 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is known as CVE-2016-9843 since 12/05/2016. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (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 36 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 96376 (openSUSE Security Update : zlib (openSUSE-2017-46)), 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 4.0 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 (96376) and SecurityFocus (BID 95131†). Entries connected to this vulnerability are available at VDB-79791, VDB-95830, VDB-97118 and VDB-99028. Several companies clearly confirm that VulDB is the primary source for best 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: 96376
Nessus Name: openSUSE Security Update : zlib (openSUSE-2017-46)
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: watchOS 4.0
Patch: github.com

Timelineinfo

12/04/2016 🔍
12/05/2016 +1 days 🔍
12/05/2016 +0 days 🔍
01/10/2017 +36 days 🔍
05/23/2017 +133 days 🔍
09/25/2017 +125 days 🔍
09/25/2017 +0 days 🔍
10/23/2017 +28 days 🔍
01/04/2023 +1899 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT208115
Researcher: Trail
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-9843 (🔍)
GCVE (CVE): GCVE-0-2016-9843
GCVE (VulDB): GCVE-100-108481

OVAL: 🔍

SecurityFocus: 95131 - zlib Multiple Denial of Service Vulnerabilities
SecurityTracker: 1039427

See also: 🔍

Entryinfo

Created: 10/23/2017 11:45
Updated: 01/04/2023 12:29
Changes: 10/23/2017 11:45 (79), 11/29/2019 16:55 (5), 01/20/2021 08:30 (2), 01/20/2021 08:32 (1), 01/04/2023 12:29 (3)
Complete: 🔍
Cache ID: 216:31B:103

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