CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.2 | $0-$5k | 0.00 |
A vulnerability classified as critical has been found in Apple macOS (Operating System) (affected version unknown). Affected is an unknown functionality of the component libxml2. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability.
The weakness was released 07/21/2021 as HT212602 as confirmed advisory (Website). The advisory is available at support.apple.com. This vulnerability is traded as CVE-2021-3518. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/28/2021). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:
A remote attacker may be able to cause arbitrary code execution
Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:
This issue was addressed with improved checks.
Product
Type
Vendor
Name
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: 7.5VulDB Meta Temp Score: 7.4
VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 8.8
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Use after freeCWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Timeline
04/27/2021 🔍07/21/2021 🔍
07/21/2021 🔍
07/23/2021 🔍
07/28/2021 🔍
Sources
Vendor: apple.comAdvisory: HT212602
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2021-3518 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20180712
Entry
Created: 07/23/2021 10:26Updated: 07/28/2021 11:30
Changes: 07/23/2021 10:26 (6), 07/23/2021 10:27 (9), 07/23/2021 10:30 (28), 07/28/2021 11:22 (3), 07/28/2021 11:30 (19)
Complete: 🔍
Cache ID: 3:C52:103
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