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Adobe security alert.

April 13, 2021

Advisory overview

Qualys Vulnerability R&D Lab has released new vulnerability checks in the Qualys Cloud Platform to protect organizations against 3 vulnerabilities that were fixed in 2 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 2 security bulletins to fix newly discovered flaws in their software. Qualys has released the following checks for these new vulnerabilities:

  • Adobe Photoshop Buffer Overflow Vulnerability (APSB21-28)

    Severity
    Serious 3
    Qualys ID
    375450
    Vendor Reference
    APSB21-28
    CVE Reference
    CVE-2021-28548, CVE-2021-28549
    CVSS Scores
    Base 2.1 / Temporal 1.6
    Description
    Adobe Photoshop is an application that allows users to view and edit various graphic formats. This update resolves an arbitrary code execution vulnerability.

    Affected Versions:
    Adobe Photoshop 2020 version 21.2.6 and earlier
    Adobe Photoshop 2021 version 22.3.1 and earlier

    QID Detection Logic:
    Windows(Authenticated): This QID checks for vulnerable version of 'Photoshop.exe' file.

    Consequence
    Successful exploitation can result in arbitrary code execution on target system.

    Solution
    Adobe has released Photoshop version 21.2.6 and 22.3 in APSB21-28 to address this vulnerability.

    Patches:
    The following are links for downloading patches to fix these vulnerabilities:
    APSB21-28

  • Adobe RoboHelp Privilege Escalation Vulnerability (APSB21-20)

    Severity
    Serious 3
    Qualys ID
    375451
    Vendor Reference
    APSB21-20
    CVE Reference
    CVE-2021-21070
    CVSS Scores
    Base 9.3 / Temporal 6.9
    Description
    Adobe RoboHelp is a help authoring tool (HAT).

    Adobe has released a security update for RoboHelp. This update resolves a vulnerability rated important.

    Affected Versions:
    Adobe RoboHelp RH2020.0.3 and earlier versions (Windows)

    QID Detection Logic (Authenticated):
    The QID checks for vulnerable versions of Adobe RoboHelp by checking the file version of "RoboHelp.exe".

    Consequence
    Successful exploitaton could lead to privilege escalation in the context of current user.
    Solution
    Users are advised to follow the patch procedure provided by Adobe. For more information visit APSB21-20.

    Patches:
    The following are links for downloading patches to fix these vulnerabilities:
    APSB21-20

These new vulnerability checks are included in Qualys vulnerability signature 2.5.155-3. 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:
    • 375450
    • 375451
  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.