CVE-2019-16451

published 2019-12-19

CVE-2019-16451: Adobe Acrobat and Reader versions , 2019.021.20056 and earlier, 2017.011.30152 and earlier, 2017.011.30155 and earlier version, 2017.011.30152 and earlier, and…

Priority P2 69 critical 9.8 CVSS 3.1

AV N AC L PR N UI N S U C H I H A H

EXPLOIT

Adobe Acrobat and Reader versions , 2019.021.20056 and earlier, 2017.011.30152 and earlier, 2017.011.30155 and earlier version, 2017.011.30152 and earlier, and 2015.006.30505 and earlier have a heap overflow vulnerability. Successful exploitation could lead to arbitrary code execution .

Affected

7 ranges

Vendor	Product	Version range	Fixed in
adobe	acrobat_dc	>= 15.006.30060 < 15.006.30508	15.006.30508
adobe	acrobat_dc	>= 15.008.20082 < 19.021.20058	19.021.20058
adobe	acrobat_dc	>= 17.011.30059 < 17.011.30156	17.011.30156
adobe	acrobat_reader_dc	>= 15.006.30060 < 15.006.30508	15.006.30508
adobe	acrobat_reader_dc	>= 15.008.20082 < 19.021.20058	19.021.20058
adobe	acrobat_reader_dc	>= 17.011.30059 < 17.011.30156	17.011.30156
adobe	adobe_acrobat_and_reader	—	—

Detection & IOCs extracted from sources · hover to see the quote

url https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/47769.zip↗

filename poc[1-4].pdf↗

• → Crash is triggered immediately upon opening a malformed PDF file containing a malformed TTF font; monitor AcroRd32/Acrobat processes for access violation exceptions originating from CoolType.dll (CTInit) during PDF open events. ↗
• → Look for heap-based memory corruption in CoolType.dll (CTInit function) triggered by malformed TTF font data embedded in a PDF; the write occurs at a large negative offset (-690332 / 0xfff57764) from a heap allocation base. ↗
• → Stack trace involving CoolType!CTInit and AGM!AGMInitialize is characteristic of this vulnerability; alert on crash dumps or AV telemetry showing this call chain in Adobe Acrobat/Reader processes. ↗
• → Reproduces on Adobe Acrobat Reader DC version 2019.012.20040 on Windows 10; flag this specific version in asset inventory as unpatched and prioritize upgrade to versions beyond 2019.021.20056. ↗

• · The vulnerability is described as potentially an unfixed variant of CVE-2019-8042; detections built for CVE-2019-8042 may have near-identical signatures but may not fully cover this variant. ↗

CVSS provenance

nvd v3.1 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd v2.0 10.0 CRITICAL AV:N/AC:L/Au:N/C:C/I:C/A:C

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