Adobe Acrobat Reader out-of-bounds write

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.7	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Adobe Acrobat Reader up to 2015.006.30510/2017.011.30158/2020.006.20034. It has been rated as critical. Affected is an unknown function. The manipulation leads to out-of-bounds write. This vulnerability is uniquely identified as CVE-2020-3795. 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 critical, has been found in Adobe Acrobat Reader up to 2015.006.30510/2017.011.30158/2020.006.20034 (Document Reader Software). This issue affects an unknown function. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Adobe Acrobat and Reader versions 2020.006.20034 and earlier, 2017.011.30158 and earlier, 2017.011.30158 and earlier, 2015.006.30510 and earlier, and 2015.006.30510 and earlier have an out-of-bounds write vulnerability. Successful exploitation could lead to arbitrary code execution .

The weakness was disclosed 03/17/2020 as APSB20-13 as confirmed security bulletin (Website). It is possible to read the advisory at helpx.adobe.com. The identification of this vulnerability is CVE-2020-3795 since 12/17/2019. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. 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 03/26/2020).

Upgrading to version 2015.006.30518, 2017.011.30166 or 2020.006.20042 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The entries VDB-152324, VDB-152325, VDB-152328 and VDB-152329 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Document Reader Software

Vendor

Adobe

Name

Acrobat Reader

Version

License

free

Website

Vendor: https://www.adobe.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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 Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Acrobat Reader 2015.006.30518/2017.011.30166/2020.006.20042

Timelineinfo

12/17/2019 🔍
03/17/2020 +91 days 🔍
03/17/2020 +0 days 🔍
03/26/2020 +9 days 🔍
10/05/2020 +193 days 🔍

Sourcesinfo

Vendor: adobe.com

Advisory: APSB20-13
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-3795 (🔍)
GCVE (CVE): GCVE-0-2020-3795
GCVE (VulDB): GCVE-100-152327
See also: 🔍

Entryinfo

Created: 03/26/2020 07:55
Updated: 10/05/2020 07:23
Changes: 03/26/2020 07:55 (43), 03/26/2020 08:00 (18), 10/05/2020 07:23 (1)
Complete: 🔍
Cache ID: 216::103