Critical

Out-of-Bounds Write RCE in Adobe Acrobat and Reader 3D PDF Parsing

IdentifiersCVE-2019-7118CWE-787· Out-of-bounds Write

CVE-2019-7118 is a critical out-of-bounds write 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 triggered while parsing embedded 3D PDF content handled through Adobe’s U3D support modules, with the vulnerable code path identified in the 2d.x3d component, specifically TRGB::Read(). The flaw occurs during processing of texture image data from crafted U3D content, where malformed size/structure values can cause writes past the intended buffer boundary. Public analysis indicates the crash occurs in the sandboxed process and can be reached via a malicious PDF containing crafted 3D content and texture resource declarations, including external image handling.

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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 lead to arbitrary code execution in the context of the current user. Available analysis indicates the memory corruption occurs in the sandboxed Adobe Reader process as the logged-on user, so direct impact may initially be constrained by the application sandbox, but it still provides a path to execute attacker-controlled code and may enable further post-exploitation depending on the environment and available sandbox escape techniques.

Mitigation

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

If immediate patching is not possible, reduce exposure by disabling or restricting rendering of embedded 3D content in PDF documents where operationally feasible, especially in environments that exchange 3D PDFs. Limit opening of untrusted PDF files, use protected/sandboxed viewing modes, and enforce application control and least-privilege policies. Prioritize patching in CAD and similar workflows where 3D content may be enabled by default or commonly used.

Remediation

Patch, then assume compromise.

Apply Adobe’s patched releases referenced in APSB19-17. Fixed versions include 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. Organizations should deploy vendor updates through standard enterprise software distribution mechanisms and verify that vulnerable legacy builds are removed from endpoints.

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 write vulnerability in Adobe Acrobat/Reader that could lead to arbitrary code execution in the context of the current user.

starlabs sgNews

Apr 9, 2019

(CVE-2019-7118) Acrobat Reader DC 2d.x3d!_LoadRGB() Out-of-Bounds Write in TRGB::Read() | STAR Labs

An arbitrary write vulnerability in Adobe Reader DC's 3D content handling (2d.x3d/rt3d components) triggered via malformed embedded or external texture image data in U3D/PDF content.

What this page doesn’t show

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

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