Apple macOS up to 10.12.1 curl integer overflow

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 macOS up to 10.12.1. It has been rated as critical. This impacts an unknown function of the component curl. The manipulation leads to integer overflow. This vulnerability is uniquely identified as CVE-2016-7167. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Apple macOS up to 10.12.1 (Operating System). This issue affects an unknown function of the component curl. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability.

The bug was discovered 09/14/2016. The weakness was disclosed 12/13/2016 by Daniel Stenberg as HT207423 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2016-7167 since 09/08/2016. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful 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 10/07/2022). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

Multiple issues existed in curl. These issues were addressed by updating to curl version 7.51.0.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 93551 (Fedora 24 : curl (2016-7a2ed52d41)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176814 (Debian Security Update for curl (DLA 1568-1)).

Upgrading to version 10.12.2 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 (93551) and SecurityFocus (BID 92975†). The entries VDB-90449, VDB-91385, VDB-91680 and VDB-91681 are pretty similar. Be aware that VulDB is the high quality 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: Integer overflow
CWE: CWE-190 / 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: 93551
Nessus Name: Fedora 24 : curl (2016-7a2ed52d41)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 840456
OpenVAS Name: Fedora Update for curl FEDORA-2016-80f4f71eff
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: macOS 10.12.2

Timelineinfo

09/08/2016 🔍
09/14/2016 +6 days 🔍
09/14/2016 +0 days 🔍
09/16/2016 +2 days 🔍
10/07/2016 +21 days 🔍
12/13/2016 +67 days 🔍
12/13/2016 +0 days 🔍
12/16/2016 +3 days 🔍
10/07/2022 +2121 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT207423
Researcher: Daniel Stenberg
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-7167 (🔍)
GCVE (CVE): GCVE-0-2016-7167
GCVE (VulDB): GCVE-100-94367
SecurityFocus: 92975 - curl/libcURL CVE-2016-7167 Multiple Integer Overflow Vulnerabilities
SecurityTracker: 1036813

scip Labs: https://www.scip.ch/en/?labs.20180712
See also: 🔍

Entryinfo

Created: 12/16/2016 14:12
Updated: 10/07/2022 19:57
Changes: 12/16/2016 14:12 (71), 07/08/2019 15:27 (14), 10/07/2022 19:57 (4)
Complete: 🔍
Cache ID: 216:BED:103

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