High

Out-of-bounds read in Adobe Acrobat/Reader 3D PDF rendering

IdentifiersCVE-2019-7123CWE-125· Out-of-bounds Read

CVE-2019-7123 is an out-of-bounds read vulnerability in Adobe Acrobat and Reader affecting versions 2019.010.20098 and earlier, 2017.011.30127 and earlier, and 2015.006.30482 and earlier. The issue is in the 3D PDF rendering path, specifically the 2d.x3d module used to process embedded 3D content. Analysis indicates the fault occurs while handling ECMA-363 Universal 3D File Format content that references texture resources, including external image files. The crash was observed in the sandboxed process in the context of the logged-on user, with the root cause identified near TRGB::expandrow() during RGB image processing. A malformed 3D PDF/U3D object can trigger an out-of-bounds read when 3D content display is enabled, resulting in information disclosure.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can disclose memory contents from the affected process via an out-of-bounds read. The observed impact is information disclosure in the sandboxed Acrobat/Reader process running as the logged-on user. While the supplied material notes that pointer manipulation and buffer mismanagement may have broader implications, the documented and vendor-assigned impact for this CVE is information disclosure.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, reduce exposure by disabling or restricting 3D content rendering in PDF workflows where feasible, especially in environments that process untrusted PDFs. Exercise additional caution in sectors that commonly exchange 3D PDFs, such as CAD-related environments, because 3D content may be enabled by default there. Prioritize opening only trusted PDF documents until updates are deployed.

Remediation

Patch, then assume compromise.

Upgrade Adobe Acrobat/Reader to a fixed release. Adobe advisory APSB19-17 lists the patched versions as Acrobat/Reader DC Continuous 2019.010.20099, Acrobat/Reader 2017 Classic 2017.011.30138, and Acrobat/Reader DC Classic 2015.006.30493 for Windows and macOS. Apply updates through the built-in updater or enterprise deployment tooling.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

AdobeAcrobat Dcapplication

AdobeAcrobat Reader Dcapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

2 SOURCESView more in app

adobe-security-bulletinsNews

Apr 9, 2019

Adobe Security Bulletin

An out-of-bounds read vulnerability in Adobe Acrobat/Reader that could lead to information disclosure.

starlabs sgNews

Apr 9, 2019

(CVE-2019-7123) Acrobat Reader DC 2d.x3d!_LoadRGB() Memory Corruption in TRGB::expandrow() | STAR Labs

An out-of-bounds read vulnerability in Adobe Reader DC's 3D content handling modules (including 2d.x3d/rt3d) triggered via malformed external texture image data in embedded 3D PDF content.

What this page doesn’t show

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Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity