Quantum Secular Labs / Blog / Advisories
CVE-2018-4872: This vulnerability is a security bypass vulnerability that leads to a sandbox escape.
CVE-2018-4872 is rated critical with a CVSS v3.0 base score of 10.0 and affects Adobe Acrobat, along with 2 other products in NVD’s configuration data. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.
Vulnerability description
An issue was discovered in Adobe Acrobat Reader 2018.009.20050 and earlier versions, 2017.011.30070 and earlier versions, 2015.006.30394 and earlier versions. This vulnerability is a security bypass vulnerability that leads to a sandbox escape. Specifically, the vulnerability exists in the way a cross call is handled.
Severity breakdown
CVSS v3.0 10.0: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
- Attack complexity: Low. No special conditions; the attack can be repeated reliably.
- Privileges required: None. No account or prior access is needed.
- User interaction: None. No action from any user is needed.
- Scope: Changed. Impact reaches beyond the vulnerable component to other resources.
- Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
- Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
- Availability impact: High. Total loss of availability; the component can be shut down.
Affected products
- Adobe Acrobat: from 17.0 up to and including 17.011.30070
- Adobe Acrobat Reader: from 17.0 up to and including 17.011.30070
- Adobe Acrobat Dc: from - up to and including 18.009.20050; from 15.0 up to and including 15.006.30394
- Adobe Acrobat Reader Dc: from - up to and including 18.009.20050; from 15.0 up to and including 15.006.30394