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Adobe security alert.

July 13, 2021

Advisory overview

Qualys Vulnerability R&D Lab has released new vulnerability checks in the Qualys Cloud Platform to protect organizations against 31 vulnerabilities that were fixed in 3 bulletins announced today by Adobe. Customers can immediately audit their networks for these and other new vulnerabilities by accessing their Qualys subscription. Visit Qualys Security Blog to prioritize remediation.

Non-Qualys customers can audit their network for these and other vulnerabilities by signing up for a Qualys Free Trial, or by trying Qualys Community Edition.

Vulnerability details

Adobe has released 3 security bulletins to fix newly discovered flaws in their software. Qualys has released the following checks for these new vulnerabilities:

  • Adobe Security Update for Adobe Acrobat and Adobe Reader (APSB21-51)

    Severity
    Serious 3
    Qualys ID
    375700
    Vendor Reference
    APSB21-51
    CVE Reference
    CVE-2021-28634, CVE-2021-28635, CVE-2021-28636, CVE-2021-28637, CVE-2021-28638, CVE-2021-28639, CVE-2021-28640, CVE-2021-28641, CVE-2021-28642, CVE-2021-28643, CVE-2021-28644, CVE-2021-35980, CVE-2021-35981, CVE-2021-35983, CVE-2021-35984, CVE-2021-35985, CVE-2021-35986, CVE-2021-35987, CVE-2021-35988
    CVSS Scores
    Base 9.3 / Temporal 7.7
    Description
    Adobe Acrobat is a family of application software and Web services developed by Adobe Inc. to view, create, manipulate, print, and manage files in Portable Document Format. The family comprises Acrobat Reader, Acrobat, and Acrobat.com.

    Adobe has released security updates to address Multiple Vulnerabilities.

    Affected Versions:
    Acrobat DC Continuous 2021.005.20058 and earlier versions(windows and macOS)
    Acrobat Reader DC Continuous 2021.005.20058 and earlier versions (Windows and macOS )
    Acrobat 2020 Classic 2020, 2020.004.30006 and earlier versions (Windows and macOS)
    Acrobat Reader 2020 Classic 2020, 2020.004.30006 and earlier versions (Windows and macOS)
    Acrobat 2017 Classic 2017, 2017.011.30199 and earlier version (Windows and macOS)
    Acrobat Reader 2017 Classic 2017, 2017.011.30199 and earlier version (Windows and macOS)

    QID Detection Logic (Authenticated):
    Operating System: Windows
    This QID looks for the vulnerable version of Acrobat.dll, AcroRd32.dll and nppdf32.dll files.

    QID Detection Logic (Authenticated):
    Operating System: MacOS
    This QID looks for the vulnerable version of Adobe Reader and Acrobat from the installed application list.

    Consequence
    An attacker could exploit this vulnerability to compromise Confidentiality, Integrity, and or Availability.

    Solution
    Adobe has released fix to address this issue. Customers are advised to refer to APSB21-51 for updates pertaining to this vulnerability.

    Patches:
    The following are links for downloading patches to fix these vulnerabilities:
    APSB21-51

  • Adobe Bridge Multiple Vulnerabilities (APSB21-53)

    Severity
    Serious 3
    Qualys ID
    375706
    Vendor Reference
    APSB21-53
    CVE Reference
    CVE-2021-28624, CVE-2021-35989, CVE-2021-35990, CVE-2021-35991, CVE-2021-35992
    CVSS Scores
    Base 9.3 / Temporal 6.9
    Description
    Adobe Bridge is a digital asset management app developed by Adobe Systems.

    Adobe has released an update for Bridge which fixes the Out-of-bounds write,Out-of-bounds read Vulnerabilities.

    Affected Versions:
    Adobe Bridge 11.0.2 and earlier versions

    QID Detection Logic:
    This QID checks for vulnerable version of Adobe Bridge.

    Consequence
    Successful exploitation of this vulnerability allows Arbitrary code execution.
    Solution
    The vendor has released updates to fix the vulnerabilities. Please refer to Adobe advisory APSB21-53 for details.

    Patches:
    The following are links for downloading patches to fix these vulnerabilities:
    APSB21-53

  • Adobe Illustrator Multiple Security Vulnerabilities (APSB21-42)

    Severity
    Serious 3
    Qualys ID
    375707
    Vendor Reference
    APSB21-42
    CVE Reference
    CVE-2021-28591, CVE-2021-28592, CVE-2021-28593, CVE-2021-36008, CVE-2021-36009, CVE-2021-36010, CVE-2021-36011
    CVSS Scores
    Base 9.3 / Temporal 6.9
    Description
    Adobe Illustrator is a vector graphics editor developed and marketed by Adobe Systems.

    Adobe has released an update for Adobe Illustrator 2021.This update resolves a critical and an important vulnerabilities that could lead to arbitrary code execution in the context of current user.

    Affected Versions:
    Adobe Illustrator 25.2.3 and prior

    QID Detection Logic:(Authenticated)
    This QID checks vulnerable version of Adobe Illustrator.

    Consequence
    Successful exploitation could lead to arbitrary code execution in the context of current user.

    Solution

    Adobe has released fix to address this issue. Customers are advised to refer to APSB21-42 for updates pertaining to this vulnerability.

    Patches:
    The following are links for downloading patches to fix these vulnerabilities:
    ASPB21-42

These new vulnerability checks are included in Qualys vulnerability signature 2.5.231-4. Each Qualys account is automatically updated with the latest vulnerability signatures as they become available. To view the vulnerability signature version in your account, from the Qualys Help menu, select the About tab.

Selective Scan Instructions Using Qualys

To perform a selective vulnerability scan, configure a scan profile to use the following options:

  1. Ensure access to TCP ports 135 and 139 are available.
  2. Enable Windows Authentication (specify Authentication Records).
  3. Enable the following Qualys IDs:
    • 375700
    • 375706
    • 375707
  4. If you would like the scan to return the Windows Hostname, also include QID 82044 and ensure access to UDP port 137 is available.
  5. If you would like to be notified if Qualys is unable to log on to a host (if Authentication fails), also include QID 105015.

In addition, prior to running a scan for these new vulnerabilities, you can estimate your exposure to these new threats by running the Risk Analysis Report, available from the Qualys Vulnerability Management Reports tab.

Access for Qualys Customers

Platforms and Platform Identification

Technical Support

For more information, customers may contact Qualys Technical Support.

About Qualys

The Qualys Cloud Platform and its integrated suite of security and compliance applications provides organizations of all sizes with a global view of their security and compliance solutions, while drastically reducing their total cost of ownership. Qualys solutions include: continuous monitoring, vulnerability management, policy compliance, PCI compliance, security assessment questionnaire, web application scanning, web application firewall, malware detection and SECURE Seal for security testing of web sites.