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srcinciteRocco Calvi (TecR0c) and Steven Seeley of Qihoo 360 Vulnerability Research InsitituteSRC-2022-0003
HistoryOct 21, 2021 - 12:00 a.m.

SRC-2022-0003 : Adobe Acrobat Reader DC abs Type 2 Font Parsing Charstring Out-of-Bounds Read Information Disclosure Vulnerability

2021-10-2100:00:00
Rocco Calvi (TecR0c) and Steven Seeley of Qihoo 360 Vulnerability Research Insititute
srcincite.io
46

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

0.002 Low

EPSS

Percentile

59.0%

Vulnerability Details:

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Acrobat Reader DC. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of type 2 fonts. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process.

Affected Vendors:

Adobe

Affected Products:

Acrobat Reader DC

Vendor Response:

Adobe has issued an update to correct this vulnerability. More details can be found at: <https://helpx.adobe.com/security/products/acrobat/apsb22-01.html&gt;

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

0.002 Low

EPSS

Percentile

59.0%